@incollection {jaehne2020a,
	title = {Struktur und Chaos: Kleinskalige Austauschprozesse zwischen Atmosph{\"a}re und Meer},
	volume = {5},
	year = {2020},
	pages = {133{\textendash}150},
	doi = {10.17885/heiup.hdjbo.2020.0.24180},
	author = {Bernd J{\"a}hne},
	editor = {Joachim Funke and Michael Wink}
}
@incollection {jaehne2020,
	title = {What controls air-sea gas exchange at extreme wind speeds? Evidence from laboratory experiments},
	year = {2020},
	pages = {133{\textendash}150},
	publisher = {Springer},
	doi = {10.1007/978-3-030-36371-0_10},
	author = {Bernd J{\"a}hne},
	editor = {P. Vlahos and E. Monahan}
}
@incollection {jaehne2019,
	title = {Air-Sea Gas Exchange},
	volume = {6},
	year = {2019},
	pages = {1{\textendash}13},
	publisher = {Academic Press},
	edition = {3},
	doi = {10.1016/B978-0-12-409548-9.11613-6},
	author = {Bernd J{\"a}hne},
	editor = {J. Kirk Cochran and Henry J. Bokuniewicz and Patricia L. Yager}
}
@article {krall2019b,
	title = {Air{\textendash}sea gas exchange at wind speeds up to 85 m/s},
	journal = {Ocean Science},
	volume = {15},
	year = {2019},
	pages = {1783-{\textendash}1799},
	doi = {10.5194/os-15-1783-2019},
	author = {Kerstin E. Krall and Andrew W. Smith and Naohisa Takagaki and Bernd J{\"a}hne}
}
@article {lu2019,
	title = {Decomposing infrared images of wind waves for quantitative separation into characteristic flow processes},
	journal = {IEEE Transactions on Geoscience and Remote Sensing},
	volume = {57},
	year = {2019},
	pages = {8304{\textendash}8316},
	doi = {10.1109/TGRS.2019.2920280},
	author = {Guan-hung Lu and Wu-ting Tsai and Bernd J{\"a}hne}
}
@article {kirchhoefer2019,
	title = {Extended noise equalisation for image compression in microscopical applications},
	journal = {tm - Technisches Messen},
	volume = {86},
	year = {2019},
	pages = {422{\textendash}432},
	doi = {10.1515/teme-2019-0022},
	author = {Daniel M. Kirchh{\"o}fer and Gerhard A. Holst and Fred S. Wouters and Stephan Hock and Bernd J{\"a}hne}
}
@article {nagel2019,
	title = {Measurement of air-sea gas transfer velocities in the Baltic Sea},
	journal = {Ocean Science},
	volume = {15},
	year = {2019},
	pages = {235{\textendash}247},
	doi = {10.5194/os-15-235-2019},
	author = {Leila Nagel and Kerstin E. Krall and Bernd J{\"a}hne}
}
@article {kunz2018,
	title = {Investigating small scale air-sea exchange processes via thermography},
	journal = {Front. Mech. Eng.},
	volume = {26},
	year = {2018},
	doi = {10.3389/fmech.2018.00004},
	author = {Jakob Kunz and Bernd J{\"a}hne}
}
@conference {vianello2018,
	title = {Robust Hough transform based 3D reconstruction from circular light fields},
	booktitle = {Conference on Computer Vision and Pattern Recognition (CVPR)},
	year = {2018},
	doi = {10.1109/CVPR.2018.00765},
	author = {Alessandro Vianello and Jens Ackermann and Maximilian Diebold and Bernd J{\"a}hne}
}
@proceedings {6267,
	title = {Trust your Model: Light Field Depth Estimation with inline Occlusion Handling},
	year = {2018},
	doi = {10.1109/CVPR.2018.00476},
	author = {Hendrik Schilling and Maximilian Diebold and Carsten Rother and Bernd J{\"a}hne}
}
@article {Vianello-etal-2017-TM,
	title = {3D reconstruction by a combined structure tensor and Hough transform light field approach},
	journal = {tm - Technisches Messen},
	year = {2017},
	abstract = {Disparity estimation using the structure tensor is a local approach to determine orientation in Epipolar Plane Images. A global extension would lead to more precise and robust estimations. In this work, a novel algorithm for 3D reconstruction from linear light fields is proposed. This method uses a modified version of the Progressive Probabilistic Hough Transform to extract orientations from Epipolar Plane Images, allowing to achieve high quality disparity maps. To this aim, the structure tensor estimates are used to speed up computation and improve the disparity estimation near occlusion boundaries. The new algorithm is evaluated on both synthetic and real light field datasets, and compared with classical local disparity estimation techniques based on the structure tensor.},
	doi = {10.1515/teme-2017-0010},
	author = {Alessandro Vianello and Giulio Manfredi and Maximilian Diebold and Bernd J{\"a}hne}
}
@article {schilling2017,
	title = {On the design of a fractal calibration pattern for improved camera calibration},
	journal = {tm - Technisches Messen},
	volume = {84},
	year = {2017},
	pages = {440{\textendash}451},
	doi = {10.1515/teme-2017-0013},
	author = {Hendrik Schilling and Maximilian Diebold and Marcel Gutsche and Bernd J{\"a}hne}
}
@proceedings {schilling-etal-2016-ForumBildverarbeitung,
	title = {3D Reconstruction by a Combined Structure Tensor and Hough Transform Light-Field Approach},
	year = {2016},
	abstract = {Disparity estimation using the structure tensor is a local approach to determine orientation in Epipolar Plane Images. A global extension would lead to more precise and robust estimations. In this work, a novel algorithm for 3D reconstruction from linear light fields is porposed. It uses a modified Progressive Probabilistic Hough Transform, in combination with the structure tensor, to extract orientations from Epipolar Plane Images edge maps, allowing to achieve high quality disparity maps.},
	isbn = {978-3-7315-0587-7},
	doi = {10.5445/KSP/1000059899},
	url = {https://doi.org/10.5445/KSP/1000059899},
	author = {Alessandro Vianello and Giulio Manfredi and Maximilian Diebold and Bernd J{\"a}hne}
}
@conference {kunz2016,
	title = {Active thermography as a tool to investigate heat and gas transfer across the air-water interface},
	booktitle = {13th Quantitative Infrared Thermographie Conference (QIRT 2016), Gdansk 4{\textendash}8 July 2016},
	year = {2016},
	doi = {10.21611/qirt.2016.069},
	author = {Jakob Kunz and Bernd J{\"a}hne}
}
@proceedings {schilling-etal-2016-ForumBildverarbeitung,
	title = {A fractal calibration pattern for improved camera calibration},
	year = {2016},
	abstract = {Camera calibration, crucial for computer vision tasks, often relies on planar calibration targets to calibrate the camera parameters. This work explores a planar, fractal, self-identifying calibration pattern, which provides a high density of calibration points for a large range of magnification factors. An evaluation on ground truth data shows the target provides very high accuracy over a wide range of conditions.},
	doi = {10.5445/KSP/1000059899},
	url = {https://doi.org/10.5445/KSP/1000059899},
	author = {Hendrik Schilling and Maximilian Diebold and Marcel Gutsche and Hamza Aziz-Ahmad and Bernd J{\"a}hne}
}
@conference {Kondermann_2016_CVPR_Workshops,
	title = {The HCI Benchmark Suite: Stereo and Flow Ground Truth With Uncertainties for Urban Autonomous Driving},
	booktitle = {The IEEE Conference on Computer Vision and Pattern Recognition (CVPR) Workshops},
	year = {2016},
	month = {June},
	abstract = { Recent advances in autonomous driving require more and more highly realistic reference data, even for difficult situations such as low light and bad weather. We present a new stereo and optical flow dataset to complement existing benchmarks. It was specifically designed to be representative for urban autonomous driving, including realistic, systematically varied radiometric and geometric challenges which were previously unavailable. The accuracy of the ground truth is evaluated based on Monte Carlo simulations yielding full, per-pixel distributions. Interquartile ranges are used as uncertainty measure to create binary masks for arbitrary accuracy thresholds and show that we achieved uncertainties better than those reported for comparable outdoor benchmarks. Binary masks for all dynamically moving regions are supplied with estimated stereo and flow values. An initial public benchmark dataset of 55 manually selected sequences between 19 and 100 frames long are made available in a dedicated website featuring interactive tools for database search, visualization, comparison and benchmarking.
},
	author = {Daniel Kondermann and Nair, Rahul and Katrin Honauer and Karsten Krispin and Jonas Andrulis and Alexander Brock and G{\"u}ssefeld, Burkhard and Mohsen Rahimimoghaddam and Sabine Hofmann and Brenner, Claus and Bernd J{\"a}hne}
}
@conference {DBLP:conf/cvpr/DieboldJG16,
	title = {Heterogeneous Light Fields},
	booktitle = {2016 {IEEE} Conference on Computer Vision and Pattern Recognition, {CVPR} 2016, Las Vegas, NV, USA, June 27-30, 2016},
	year = {2016},
	abstract = {In contrast to traditional binocular or multi-view stereo approaches, the adequately sampled space of observations in light-field imaging allows, to obtain dense and high quality depth maps. It also extends capabilities beyond those of traditional methods. Previously, constant intensity has been assumed for estimating disparity of orientation in most approaches to analyze epipolar plane images (EPIs). Here, we introduce a modified structure tensor approach which improves depth estimation. This extension also includes a model of non-constant intensity on EPI manifolds. We derive an approach to estimate high quality depth maps in luminance-gradient light fields, as well as in color-filtered light fields. Color-filtered light fields pose particular challenges due to the fact that structures can change significantly in appearance with wavelength and can completely vanish at some wavelength. We demonstrate solutions to this challenge and obtain a dense sRGB image reconstruction in addition to dense depth maps.},
	doi = {10.1109/CVPR.2016.193},
	url = {http://dx.doi.org/10.1109/CVPR.2016.193},
	author = {Maximilian Diebold and Alexander Gatto and Bernd J{\"a}hne}
}
@article {jaehne2016,
	title = {Noise equalisation and quasi loss-less image data compression {\textendash} or how many bits needs an image sensor?},
	journal = {tm {\textendash} Technisches Messen},
	volume = {83},
	year = {2016},
	pages = {16{\textendash}24},
	doi = {10.1515/teme-2015-0093},
	author = {Bernd J{\"a}hne and Martin Schwarzbauer}
}
@conference {visapp16vonSchmude,
	title = {Relative Pose Estimation from Straight Lines using Parallel Line Clustering and its Application to Monocular Visual Odometry},
	booktitle = {Proceedings of the 11th Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications},
	year = {2016},
	abstract = {This paper tackles the problem of relative pose estimation between two monocular camera images in textureless scenes. Due to a lack of point matches, point-based approaches such as the 5-point algorithm often fail when used in these scenarios. Therefore we investigate relative pose estimation from line observations. We propose a new approach in which the relative pose estimation from lines is extended by a 3D line direction estimation step. The estimated line directions serve to improve the robustness and the efficiency of all processing phases: they enable us to guide the matching of line features and allow an efficient calculation of the relative pose. First, we describe in detail the novel 3D line direction estimation from a single image by clustering of parallel lines in the world. Secondly, we propose an innovative guided matching in which only clusters of lines with corresponding 3D line directions are considered. Thirdly, we introduce the new relative pose estimation based on 3 D line directions. Finally, we combine all steps to a visual odometry system. We evaluate the different steps on synthetic and real sequences and demonstrate that in the targeted scenarios we outperform the state-of-the-art in both accuracy and computation time.},
	isbn = {978-989-758-175-5},
	doi = {10.5220/0005661404210431},
	author = {Naja von Schmude and Pierre Lothe and Bernd J{\"a}hne}
}
@conference {jaehne2015,
	title = {Air-sea gas exchange: from empiric wind speed relations to regimes and ranges},
	booktitle = {Fr{\"u}hjahrstagung der Deutschen Physikalischen Gesellschaft, Fachverband Umweltphysik},
	year = {2015},
	note = {Invited talk},
	pages = {UP 16.3},
	url = {http://www.dpg-verhandlungen.de/year/2015/conference/heidelberg/part/up/session/16/contribution/3?lang=en},
	author = {Bernd J{\"a}hne}
}
@article {krall2015,
	title = {Comparative heat and gas exchange measurements in the Heidelberg Aeolotron, a large annular wind-wave tank},
	journal = {Ocean Sci.},
	volume = {11},
	year = {2015},
	pages = {111--120},
	doi = {10.5194/os-11-111-2015},
	author = {Leila Nagel and Kerstin Ellen Krall and Bernd J{\"a}hne}
}
@article {kiefhaber2015a,
	title = {Influence of natural surfactants on short wind waves in the coastal Peruvian waters},
	volume = {12},
	year = {2015},
	pages = {1291{\textendash}1325},
	doi = {10.5194/osd-12-1291-2015},
	author = {Daniel Kiefhaber and Christopher J Zappa and Bernd J{\"a}hne}
}
@proceedings {diebold-etal-2015-SPIE,
	title = {Light-field camera design for high-accuracy depth estimation},
	year = {2015},
	month = {06/2015},
	abstract = {Light-field imaging is a research field with applicability in a variety of imaging areas including 3D cinema, entertainment, robotics, and any task requiring range estimation. In contrast to binocular or multi-view stereo approaches, capturing light fields means densely observing a target scene through a window of viewing directions. A principal benefit in light-field imaging for range computation is that one can eliminate the error-prone and computationally expensive process of establishing correspondence. The nearly continuous space of observation allows to compute highly accurate and dense depth maps free of matching. Here, we discuss how to structure the imaging system for optimal ranging over a defined volume - what we term a bounded frustum. We detail the process of designing the light-field setup, including practical issues such as camera footprint and component size influence the depth of field, lateral and range resolution. Both synthetic and real captured scenes are used to analyze the depth precision resulting from a design, and to show how unavoidable inaccuracies such as camera position and focal length variation limit depth precision. Finally, inaccuracies may be sufficiently well compensated through calibration and must be eliminated at the outset.},
	doi = {http://dx.doi.org/10.1117/12.2184845},
	author = {Maximilian Diebold and Oliver Blum and Marcel Gutsche and Sven Wanner and Christoph S. Garbe and Harlyn Baker and Bernd J{\"a}hne}
}
@article {mesarchaki2015,
	title = {Measuring air{\textendash}sea gas-exchange velocities in a large-scale annular wind{\textendash}wave tank},
	journal = {Ocean Sci.},
	volume = {11},
	year = {2015},
	pages = {121--138},
	doi = {10.5194/os-11-121-2015},
	author = {Evridiki Mesarchaki and Christine Kr{\"a}uter and Kerstin Ellen Krall and Maximilian Bopp and F. Helleis and Jonathan Williams and Bernd J{\"a}hne}
}
@article {jaehne2015c,
	title = {The ocean in the lab: measurements with light and shadow},
	journal = {Ruperto Carola Forschungsmagazin Heidelberg University},
	volume = {7},
	year = {2015},
	pages = {52{\textendash}59},
	doi = {10.17885/heiup.ruca.23497},
	author = {Bernd J{\"a}hne}
}
@article {friedl2015,
	title = {Optical sensing of oxygen using a modified Stern-Volmer equation for high laser irradiance},
	journal = {Sensors and Actuators B: Chemical},
	volume = {206},
	year = {2015},
	note = {Available online 30 September 2014},
	pages = {336--342},
	doi = {10.1016/j.snb.2014.09.073},
	author = {Felix Friedl and Nils Krah and Bernd J{\"a}hne}
}
@article {friedl2015,
	title = {Optical sensing of oxygen using a modified Stern-Volmer equation for high laser irradiance},
	journal = {Sensors and Actuators B: Chemical},
	volume = {206},
	year = {2015},
	pages = {336{\textendash}342},
	doi = {10.1016/j.snb.2014.09.073},
	author = {Felix Friedl and Nils Krah and Bernd J{\"a}hne}
}
@inbook {Kondermann-etal-2015-ACCV,
	title = {Stereo Ground Truth with Error Bars},
	booktitle = {Computer Vision {\textendash} ACCV 2014: 12th Asian Conference on Computer Vision, Singapore, Singapore, November 1-5, 2014, Revised Selected Papers, Part V},
	year = {2015},
	pages = {595{\textendash}610},
	publisher = {Springer International Publishing},
	organization = {Springer International Publishing},
	address = {Cham},
	abstract = {Creating stereo ground truth based on real images is a measurement task. Measurements are never perfectly accurate: the depth at each pixel follows an error distribution. A common way to estimate the quality of measurements are error bars. In this paper we describe a methodology to add error bars to images of previously scanned static scenes. The main challenge for stereo ground truth error estimates based on such data is the nonlinear matching of 2D images to 3D points. Our method uses 2D feature quality, 3D point and calibration accuracy as well as covariance matrices of bundle adjustments. We sample the reference data error which is the 3D depth distribution of each point projected into 3D image space. The disparity distribution at each pixel location is then estimated by projecting samples of the reference data error on the 2D image plane. An analytical Gaussian error propagation is used to validate the results. As proof of concept, we created ground truth of an image sequence with 100 frames. Results show that disparity accuracies well below one pixel can be achieved, albeit with much large errors at depth discontinuities mainly caused by uncertain estimates of the camera location.},
	isbn = {978-3-319-16814-2},
	doi = {10.1007/978-3-319-16814-2_39},
	url = {http://dx.doi.org/10.1007/978-3-319-16814-2_39},
	author = {Daniel Kondermann and Nair, Rahul and Stephan Meister and Wolfgang Mischler and G{\"u}ssefeld, Burkhard and Katrin Honauer and Sabine Hofmann and Brenner, Claus and Bernd J{\"a}hne}
}
@article {kiefhaber2015b,
	title = {Water wave measurement from stereo images of specular reflections},
	volume = {26},
	year = {2015},
	pages = {115401},
	abstract = {A new optical instrument for the study of ocean waves, the Reflective Stereo Slope Gauge, has been developed. Its purpose is to measure ocean wave field parameters that are crucial to the air-sea exchange of momentum, heat and gases. The instrument combines a statistical wave slope measurement method similar to Cox and Munk{\textquoteright}s sun glitter technique with a dedicated stereo camera and associated illumination setup for direct wave height measurements. The instrument output was validated under controlled conditions in a wind-wave facility.},
	doi = {10.1088/0957-0233/26/11/115401},
	author = {Daniel Kiefhaber and Guillemette Caulliez and Christopher J Zappa and Julia Schaper and Bernd J{\"a}hne}
}
@conference {krall2014b,
	title = {Air-sea gas exchange and momentum transfer: turbulence and Schmidt number dependency},
	booktitle = {7th SOPRAN Annual Meeting, Bremen, Germany, 25-26 March 2014},
	year = {2014},
	doi = {10.5281/zenodo.10903},
	author = {Kerstin Ellen Krall and Bernd J{\"a}hne}
}
@conference {krall2014a,
	title = {Air-sea gas exchange under nature-like surfactant influence in the lab},
	booktitle = {7th SOPRAN Annual Meeting, Bremen, Germany, 25-26 March 2014},
	year = {2014},
	doi = {10.5281/zenodo.10900},
	author = {Kerstin Ellen Krall and Klaus Schneider-Zapf and Svenja Reith and Daniel Kiefhaber and Bernd J{\"a}hne}
}
@article {nagel2014a,
	title = {Comparative heat and gas exchange measurements in the Heidelberg Aeolotron, a large annular wind-wave tank},
	journal = {Ocean Sci. Discuss.},
	volume = {11},
	year = {2014},
	pages = {1691--1718},
	doi = {10.5194/osd-11-1691-2014},
	author = {Leila Nagel and Kerstin Ellen Krall and Bernd J{\"a}hne}
}
@article {krall2014,
	title = {First laboratory study of air-sea gas exchange at hurricane wind speeds},
	journal = {Ocean Sci.},
	volume = {10},
	year = {2014},
	pages = {257--265},
	doi = {10.5194/os-10-257-2014},
	author = {Kerstin Ellen Krall and Bernd J{\"a}hne}
}
@article {kraeuter2014,
	title = {High resolution 2-D fluorescence imaging of the mass boundary layer thickness at free water surfaces},
	journal = {J. Europ. Opt. Soc. Rap. Public.},
	volume = {9},
	year = {2014},
	pages = {14016},
	doi = {10.2971/jeos.2014.14016},
	author = {Christine Kr{\"a}uter and Darya Trofimova and Daniel Kiefhaber and Nils Krah and Bernd J{\"a}hne}
}
@conference {kraeuter2014a,
	title = {High-resolution 2-D fluorescence imaging of gas transfer at a free water surface},
	booktitle = {Ocean Science Meeting, 23--28. 02. 2014, Honolulu Hawaii},
	year = {2014},
	abstract = {A novel 2-D fluorescence imaging technique has been developed to visualize gas exchange between air and water using ammonia as a tracer. Fluorescence is stimulated by high-power LEDs and is observed from above with a low-noise, high-resolution and high-speed camera. The invasion of ammonia into water leads to an increase in pH (from a starting value of 4), which is visualized with a fluorescent dye. The flux of ammonia can be controlled by controlling its air-side concentration. A higher flux leads to an increase of the thickness of the layer, from which fluorescent light is emitted (pH > 7). In this way, a varying fraction of the thickness of the aqueous mass boundary layer is imaged. In addition to the fluorescence measurement, we conducted collocated and simultaneous thermography and wave imaging measurements. With this data set, it is possible to compare heat and gas transfer and to investigate the effect of waves on both transfer processes. First results will be presented.},
	doi = {10.5281/zenodo.12330},
	author = {Christine Kr{\"a}uter and Darya Trofimova and Leila Nagel and Bernd J{\"a}hne}
}
@article {kiefhaber2014a,
	title = {High-speed imaging of short wind waves by shape from refraction},
	journal = {J. Europ. Opt. Soc. Rap. Public.},
	volume = {9},
	year = {2014},
	pages = {14015},
	doi = {10.2971/jeos.2014.14015},
	author = {Daniel Kiefhaber and Svenja Reith and Roland Rocholz and Bernd J{\"a}hne}
}
@conference {kiefhaber2014b,
	title = {Measurement of wind waves statistics from specular reflections},
	booktitle = {Ocean Science Meeting, 23--28. 02. 2014, Honolulu Hawaii},
	year = {2014},
	abstract = {The Reflective Stereo Slope Gauge (RSSG) [1] was deployed to two cruises in the tropical Pacific Ocean in Dec. 2011 and Dec. 2012 to measure statistics of small-scale wind waves. During the cruises, both open ocean (Samoa - Hawaii, OSSPRE 2011 on R/V Kilo Moana) and coastal upwelling (off Peru, M91 on German FS Meteor) areas were studied. Surface displacement (wave height time series with 50 Hz sampling rate) was measured by a stereo system with two light sources (Helmholtz stereopsis), while statistics of surface slope were obtained using a method related to Cox \& Munk{\textquoteright}s sun glitter technique [2]. Furthermore, information on the scale of the smallest waves was gained from the brightness of specular reflections (which is related to surface curvature). This parameter is useful for determining the presence of surface slicks. The results underline the importance of monitoring parameters other than wind speed during gas exchange measurements. The presented methods allow for robust estimates of surface slope statistics under a wide range of conditions. [1] Kiefhaber, D., Rocholz, R., Balschbach, G. and J{\"a}hne, B., Improved optical instrument for the measurement of water wave statistics in the field, in: Gas Transfer at Water Surfaces, Kyoto University Press, 2011. [2] Cox, C. and W. Munk (1954), Measurements of the roughness of the sea surface from photographs of the sun{\textquoteright}s glitter, J. Opt. Soc. Amer., 44 (11), 838-850.},
	doi = {10.5281/zenodo.12335},
	author = {Daniel Kiefhaber and Christopher J. Zappa and Bernd J{\"a}hne}
}
@article {mesarchaki2014a,
	title = {Measuring air-sea gas exchange velocities in a large scale annular wind-wave tank},
	journal = {Ocean Sci. Discuss.},
	volume = {11},
	year = {2014},
	pages = {1643--1689},
	doi = {10.5194/osd-11-1643-2014},
	author = {Evridiki Mesarchaki and Christine Kr{\"a}uter and Kerstin Ellen Krall and Maximilian Bopp and F. Helleis and Jonathan Williams and Bernd J{\"a}hne}
}
@conference {esparza2014,
	title = {Registration of a multi-camera system with a 3D laser range finder},
	booktitle = {9th Workshop Driver Assistance Systems (FAS2014), 26.-28.03.2014, Walting},
	year = {2014},
	pages = {37--46},
	url = {http://www.uni-das.de/de/Veranstaltungen/fas2014.php},
	author = {Esparza, Jose and Vepa, Leo and Helmle, Michael and Bernd J{\"a}hne}
}
@conference {jaehne2014,
	title = {Simultaneous measurements of solubilities and diffusion coeffcients of volatile species in liquids},
	booktitle = {7th SOPRAN Annual Meeting, Bremen, Germany, 25-26 March 2014},
	year = {2014},
	doi = {10.5281/zenodo.10409},
	author = {Bernd J{\"a}hne}
}
@conference {kondermann2014,
	title = {Stereo ground truth with error bars},
	booktitle = {Asian Conference on Computer Vision, ACCV 2014},
	year = {2014},
	author = {Daniel Kondermann and Nair, Rahul and Stephan Meister and Wolfgang Mischler and G{\"u}ssefeld, Burkhard and Sabine Hofmann and Brenner, Claus and Bernd J{\"a}hne}
}
@conference {esparza2014c,
	title = {Towards surround stereo vision: analysis of a new surround view camera configuration for driving asistance applications},
	booktitle = {17th International Conference on Intelligent Transportation Systems (ITSC 2014)},
	year = {2014},
	author = {Esparza, Jose and Helmle, Michael and Bernd J{\"a}hne}
}
@conference {lenor2014,
	title = {Tracking-based visibility estimation},
	booktitle = {Pattern Recognition, 36th German Conference, GCPR 2014, M{\"u}nster, Germany, September 2-5, 2014},
	volume = {8753},
	year = {2014},
	pages = {365--376},
	publisher = {Springer},
	organization = {Springer},
	doi = {10.1007/978-3-319-11752-2_29},
	author = {Lenor, Stephan and Martini, Johannes and Bernd J{\"a}hne and Stopper, Ulrich and Weber, Stefan and Ohr, Florian},
	editor = {Jiang, Xiaoyi and Joachim Hornegger and Reinhard Koch}
}
@conference {esparaza2014a,
	title = {Wide base stereo with fisheye optics: a robust approach for 3D reconstruction in driving assistance},
	booktitle = {Pattern Recognition, 36th German Conference, GCPR 2014, M{\"u}nster, Germany, September 2-5, 2014},
	volume = {8753},
	year = {2014},
	pages = {342--353},
	publisher = {Springer},
	organization = {Springer},
	doi = {10.1007/978-3-319-11752-2_27},
	author = {Esparza, Jose and Helmle, Michael and Bernd J{\"a}hne},
	editor = {Jiang, Xiaoyi and Joachim Hornegger and Reinhard Koch}
}
@incollection {jaehne2013c,
	title = {625 Jahre Ruperto Carola und 25 Jahre Bildverarbeitung},
	volume = {55},
	year = {2013},
	pages = {71--73},
	publisher = {Gesellschaft der Freunde Universit{\"a}t Heidelberg e. V.},
	isbn = {978-3-00-040060-5},
	url = {http://d-nb.info/1033237000},
	author = {Bernd J{\"a}hne},
	editor = {Hilgert, Markus and Wink, Michael}
}
@article {mersmann2013,
	title = {Calibration of time-of-flight cameras for accurate intraoperative surface reconstruction},
	journal = {Med. Phys.},
	volume = {40},
	year = {2013},
	pages = {082701},
	doi = {10.1118/1.4812889},
	author = {Sven Mersmann and Alexander Seitel and Michael Erz and Bernd J{\"a}hne and Nickel, Felix and Mieth, Markus and Mehrabi, Arianeb and Lena Maier-Hein}
}
@conference {jaehne2013a,
	title = {Der Standard EMVA 1288 zur Charakterisierung von Kameras und Bildsensoren: von 2D- zu 3D-Kameras},
	booktitle = {Photogrammetrie, Laserscanning, Optische 3D-Messtechnik, Beitr{\"a}ge der Oldenburger 3D-Tage 2013},
	year = {2013},
	pages = {388--399},
	publisher = {Wichmann},
	organization = {Wichmann},
	url = {http://www.ub.uni-heidelberg.de/archiv/17699},
	author = {Bernd J{\"a}hne},
	editor = {Thomas Luhmann and M{\"u}ller, Christina}
}
@article {krall2013a,
	title = {First air-sea gas exchange laboratory study at hurricane wind speeds},
	journal = {Ocean Sci. Discuss.},
	volume = {10},
	year = {2013},
	pages = {1971--1996},
	doi = {10.5194/osd-10-1971-2013},
	url = {www.ocean-sci-discuss.net/10/1971/2013/},
	author = {Kerstin Ellen Krall and Bernd J{\"a}hne}
}
@conference {kiefhaber2013,
	title = {Optical measurement of surface ocean waves},
	booktitle = {3rd EOS Topical Meeting on Blue Photonics --- Optics in the Sea},
	year = {2013},
	note = {best student poster award},
	doi = {10.5281/zenodo.12334},
	author = {Daniel Kiefhaber and Roland Rocholz and Paulus Salomon Bauer and Bernd J{\"a}hne}
}
@article {atif2013,
	title = {Optimal Depth Estimation from a Single Image by Computational Imaging Using Chromatic Aberrations},
	journal = {tm --- Technisches Messen},
	volume = {80},
	year = {2013},
	pages = {343--348},
	abstract = {We present a computational imaging approach to estimate the depth from a single image using axial chromatic aberrations. It includes a co-design of optics and digital processing to select the optimal parameters of a lens such as focal length, f-number, and chromatic focal shift according to the performance of a depth estimation algorithm on the digital side. A simulation framework evaluates the complete systems performance in different imaging conditions including optimal axial chromatic lens aberration. A low-complexity algorithm estimates the depth map of real scenes. Experiments on real and synthetic scenes show the feasibility of the proposed system for depth estimation. In the case of relatively broadband object spectra and a lens with focal length of 4 mm, depth is estimated with an RMS error of 6{\textendash}10\%.},
	doi = {10.1515/teme.2013.0042},
	author = {Atif, Muhammad and Bernd J{\"a}hne}
}
@article {geese2013a,
	title = {PRNU and DSNU Maximum Likelihood Estimation Using Sensor Statistics},
	journal = {tm --- Technisches Messen},
	volume = {80},
	year = {2013},
	pages = {321--328},
	doi = {10.1515/teme.2013.0039},
	author = {Geese, Marc and Paul Ruhnau and Bernd J{\"a}hne}
}
@article {davis2013,
	title = {Time-of-Flight Imaging: Algorithms, Sensors and Applications (Dagstuhl Seminar 12431)},
	journal = {Dagstuhl Reports},
	volume = {2},
	number = {10},
	year = {2013},
	pages = {79--104},
	publisher = {Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
	abstract = {This report documents the program and the outcomes of Dagstuhl Seminar 12431 "Time-of-Flight Imaging: Algorithms, Sensors and Applications". The seminar brought together researchers with diverse background from both academia and industry to discuss various aspects of Time-of-Flight imaging and general depth sensors. The executive summary and abstracts of the talks given during the seminar as well as the outcome of several working groups on specific research topics are presented in this report.},
	issn = {2192-5283},
	doi = {http://dx.doi.org/10.4230/DagRep.2.10.79},
	url = {http://drops.dagstuhl.de/opus/volltexte/2013/3904},
	editor = {Davis, James and Bernd J{\"a}hne and Andreas Kolb and Raskar, Ramesh and Theobalt, Christian and Davis, James and Bernd J{\"a}hne and Raskar, Ramesh and Theobalt, Christian and Andreas Kolb}
}
@conference {jaehne2013,
	title = {Von optischer 3D-Messtechnik zu lichtfeldbasierter Bildakquisition und -verarbeitung},
	booktitle = {Photogrammetrie, Laserscanning, Optische 3D-Messtechnik, Beitr{\"a}ge der Oldenburger 3D-Tage 2013},
	year = {2013},
	note = {eingeladener Er{\"o}ffnungsvortrag},
	pages = {1--8},
	publisher = {Wichmann},
	organization = {Wichmann},
	url = {http://www.ub.uni-heidelberg.de/archiv/17698},
	author = {Bernd J{\"a}hne},
	editor = {Thomas Luhmann and M{\"u}ller, Christina}
}
@booklet {jaehne2012h,
	title = {50. Heidelberger Bildverarbeitungsforum --- Jubil{\"a}umsinterview mit Prof. Dr. Bernd J{\"a}hne},
	year = {2012},
	author = {Bernd J{\"a}hne}
}
@conference {nagel2012,
	title = {Active Thermography as a Link between Laboratory and Field Studies},
	booktitle = {SOLAS Open Science Conference, Washington State, USA},
	year = {2012},
	author = {Leila Nagel and Kerstin E. Richter and Bernd J{\"a}hne}
}
@incollection {jaehne2012f,
	title = {Atmosphere-water exchange},
	volume = {1},
	year = {2012},
	pages = {175--193},
	publisher = {Springer},
	doi = {10.1007/978-1-4614-5731-2_8},
	author = {Bernd J{\"a}hne},
	editor = {John S. Gulliver}
}
@incollection {jaehne2012d,
	title = {Atmosphere-water exchange},
	volume = {1},
	year = {2012},
	pages = {594--606},
	publisher = {Springer},
	doi = {10.1007/978-1-4419-0851-3_644},
	author = {Bernd J{\"a}hne},
	editor = {Robert A. Meyers}
}
@article {fehr_12_bilder,
	title = {Bilder berechnen - nicht nur aufnehmen},
	journal = {Optik \& Photonik},
	volume = {7},
	year = {2012},
	pages = {50-53},
	doi = {10.1002/opph.201290021},
	author = {Fehr, J. and Bernd J{\"a}hne}
}
@article {fehr2012,
	title = {Bilder berechnen --- nicht nur aufnehmen : {\textquoteleft}{\textquoteleft}Computational Photography{\textquoteright}{\textquoteright} wird zunehmend interessant f{\"u}r die industrielle Bildverarbeitung},
	journal = {Optik \& Photonik},
	volume = {7},
	number = {1},
	year = {2012},
	pages = {50--53},
	doi = {10.1002/opph.201290021},
	author = {Fehr, Janis and Bernd J{\"a}hne}
}
@article {geese_12_cnn,
	title = {CNN Based Dark Signal Non-Uniformity Estimation},
	journal = {CNNA},
	year = {2012},
	pages = {1-6},
	doi = {10.1109/CNNA.2012.6331408},
	author = {Geese, M. and Bernd J{\"a}hne and Paul Ruhnau}
}
@conference {geese2012,
	title = {CNN based dark signal non-uniformity estimation},
	booktitle = {Cellular Nanoscale Networks and Their Applications (CNNA), 2012 13th International Workshop on},
	year = {2012},
	pages = {1--6},
	doi = {10.1109/CNNA.2012.6331408},
	author = {Geese, M. and Paul Ruhnau and Bernd J{\"a}hne}
}
@book {jaehne2012e,
	title = {Digitale Bildverarbeitung und Bildgewinnung},
	year = {2012},
	publisher = {Springer Vieweg},
	organization = {Springer Vieweg},
	isbn = {978-3-642-04951-4},
	doi = {10.1007/978-3-642-04952-1},
	url = {http://www.springer.com/engineering/signals/book/978-3-642-04951-4},
	author = {Bernd J{\"a}hne}
}
@conference {erz2012a,
	title = {Erweiterte Sch{\"a}rfentiefe mittels Scheimpflug-Bildaufnahme und Bildfusion},
	booktitle = {Forum Bildverarbeitung},
	year = {2012},
	pages = {1--12},
	publisher = {KIT Scientific Publishing},
	organization = {KIT Scientific Publishing},
	doi = {10.5445/KSP/1000030440},
	url = {http://digbib.ubka.uni-karlsruhe.de/volltexte/1000030440},
	author = {Michael Erz and Wolfgang Mischler and Trein, Johannes and Zhuang Lin and Lay, Ralf and Bernd J{\"a}hne},
	editor = {F. Puente Leon and M. Heizmann}
}
@incollection {jaehne2012,
	title = {Gas transfer at water surfaces},
	year = {2012},
	pages = {389--404},
	publisher = {CRC Press/Balkema},
	chapter = {22},
	url = {http://www.crcnetbase.com/isbn/9780203803967},
	author = {Bernd J{\"a}hne},
	editor = {W. Rodi and M. Uhlmann}
}
@booklet {jaehne2012a,
	title = {Gegenwart und Zukunft der industriellen Bildverarbeitung --- Aufbruch in drei Dimensionen plus},
	year = {2012},
	url = {http://www.qm-infocenter.de/258063},
	author = {Bernd J{\"a}hne}
}
@incollection {nair2012,
	title = {Ground truth for evaluating time of flight imaging},
	volume = {8200},
	year = {2012},
	pages = {52--74},
	publisher = {Springer},
	doi = {10.1007/978-3-642-44964-2_4},
	author = {Nair, Rahul and Stephan Meister and Lambers, Martin and Balda, Michael and Hofmann, Hannes and Andreas Kolb and Daniel Kondermann and Bernd J{\"a}hne}
}
@unpublished {rocholz2012,
	title = {High speed and high resolution wave imaging to investigate the initial generation of wind waves at very small fetch},
	year = {2012},
	note = {WISE (Waves In Shallow Environments) 2012, 19th International Conference, Barcelona, Spain},
	url = {http://hci.iwr.uni-heidelberg.de/publications/dip/MISC/WISE_2012_rrocholz/2012_WISE_rrocholz_noVideos.pdf},
	author = {Roland Rocholz and Patrick Fahle and Bernd J{\"a}hne}
}
@conference {jaehne2012g,
	title = {Investigation of small-scale air-sea interaction processes by active thermography},
	booktitle = {Geoscience and Remote Sensing Symposium (IGARSS)},
	year = {2012},
	pages = {358--361},
	doi = {10.1109/IGARSS.2012.6351564},
	author = {Bernd J{\"a}hne and Leila Nagel}
}
@booklet {jaehne2012c,
	title = {Neuerungen zum EMVA Standard 1288, Der Release 3.1 des etablierten Standards zur Kameracharakterisierung},
	year = {2012},
	author = {Bernd J{\"a}hne}
}
@conference {mischler2012,
	title = {Optical measurements of bubbles and spray in wind/water facilities at high wind speeds},
	booktitle = {12th International Triennial Conference on Liquid Atomization and Spray Systems 2012, Heidelberg (ICLASS 2012)},
	year = {2012},
	abstract = {An optical imaging technique for the measurement of the size and velocity distribution of bubbles and droplets is presented. This method was used in a wind-wave tank at high wind-speeds to investigate bubble populations and spray generated by breaking water-waves. These measurements help to model bubble and spray induced gas exchange between atmosphere and ocean. The setup consists of a 2040  1088 CMOS-camera (Basler acA2000-340km, 5.5 mum pixel size), which is used in a telecentric bright-field setup. Thus bubbles or droplets between the light source and the camera become visible in the images as dark disks because of light scattering. For illumination, a single high-power LED (Cree XP-E) in a telecentric illumination system is used. This LED is operated in a pulsed mode with pulse lengths smaller than 2 mus. This is the effective exposure time. In order to acquire two images with a small temporal distance, the camera is set to maximal exposure time. The first image is recorded by flashing the LED at the end of the first exposure and the second image by flashing at the beginning of the second exposure. The effective time difference of consecutive exposures was between 1 mus and twice the exposure time of the camera. The telecentricity (only rays parallel to the optical axis contribute to the images) of the optics reduces the error of the size estimation of the bubbles/droplets. In addition the position along the optical axis can be estimated by a depth from defocus method. With this information it is also possible to determine the measuring volume to estimate the bubble/spray-number density. The size range of this technique is determined by the pixel and sensor size and by the resolution of the lens. Here, a lens with a working distance of 135 mm and a magnification of 0.37 is used, so that one pixel corresponds to 15 mum in object space. With this setup a radius range of 40 mum - 5000 mum can be imaged. The main source for the error of the radius is the blurring of the edges due to defocus. Therefore the accuracy depends on the quality of telecentricity and complexity of image processing. For bubbles with a radius larger than 10 px the error is below 1 \% when using simple image processing. This error can be reduced significantly by using elaborate image processing, which is also able to detect bubbles as small as 3 px in size. Different image processing algorithms for spherical objects are presented and investigated regarding accuracy. Bubbles or droplets which show deviation from sphere shape introduce problems for the image processing. For bubbles in still water, such deviations are typically found for radii of greater than 500 mum. Capabilities and limits of the technique are addressed on the example of two experiments. Test measurements were conducted at the high wind speed wind-wave tank in Kyoto, Japan at a wind speed of 42 m/s. This experiment showed that distributions of bubbles can be measured at high wind speeds with no problems in regions, which are not near to the water surface (> 2 cm). For regions close to the interface the image processing algorithms need to be adjusted, since portions of the illumination can be occluded by waves. It is shown with an experiment in the small linear wind/wave facility in Heidelberg, that this technique also works for spray measurements. Systematic measurements of spray could not be conducted in Kyoto, since the walls of the tank were covered by a thin film of water caused by the spray, which heavily disturbed the optical path.},
	doi = {10.5281/zenodo.10957},
	author = {Wolfgang Mischler and Bernd J{\"a}hne}
}
@article {jaehne2012b,
	title = {Optik, Photonik und Bildverarbeitung --- eine spannende Reise},
	journal = {Optik \& Photonik},
	volume = {7},
	number = {1},
	year = {2012},
	pages = {2--3},
	doi = {10.1002/opph.201290010},
	author = {Bernd J{\"a}hne}
}
@conference {atif2012,
	title = {Optimal Depth Estimation from a Single Image by Computational Imaging using Chromatic Aberrations},
	booktitle = {Forum Bildverarbeitung},
	year = {2012},
	pages = {23--34},
	publisher = {KIT Scientific Publishing},
	organization = {KIT Scientific Publishing},
	doi = {10.5445/KSP/1000030440},
	url = {http://digbib.ubka.uni-karlsruhe.de/volltexte/1000030440},
	author = {Atif, Muhammad and Bernd J{\"a}hne},
	editor = {F. Puente Leon and M. Heizmann}
}
@conference {erz2012,
	title = {Optimale und differenzierte Kameraauswahl nach dem EMVA-Standard 1288},
	booktitle = {Forum Bildverarbeitung},
	year = {2012},
	pages = {35--46},
	publisher = {KIT Scientific Publishing},
	organization = {KIT Scientific Publishing},
	doi = {10.5445/KSP/1000030440},
	url = {http://digbib.ubka.uni-karlsruhe.de/volltexte/1000030440},
	author = {Michael Erz and Bernd J{\"a}hne},
	editor = {F. Puente Leon and M. Heizmann}
}
@article {meister_12_outdoor,
	title = {Outdoor Stereo Camera System for the Generation of Real-World Benchmark
Data Sets},
	journal = {Optical Engineering},
	volume = {51},
	year = {2012},
	pages = {021107-1},
	doi = {10.1117/1.OE.51.2.021107},
	author = {Stephan Meister and Bernd J{\"a}hne and Daniel Kondermann}
}
@article {meister2012,
	title = {Outdoor stereo camera system for the generation of real-world benchmark data sets},
	journal = {Opt. Eng.},
	volume = {51},
	year = {2012},
	pages = {021107},
	doi = {10.1117/1.OE.51.2.021107},
	author = {Stephan Meister and Bernd J{\"a}hne and Daniel Kondermann}
}
@conference {kraeuter2012,
	title = {Partitioning of the Trasfer Resistance between Air and Water},
	booktitle = {SOLAS Open Science Conference, Washington State, USA},
	year = {2012},
	doi = {10.5281/zenodo.12328},
	author = {Christine Kr{\"a}uter and Kerstin E. Richter and Evridiki Mesarchaki and Roland Rocholz and Jonathan Williams and Bernd J{\"a}hne}
}
@conference {kondermann_12_on,
	title = {On Performance Analysis of Optical Flow Algorithms},
	booktitle = {Outdoor and Large-Scale Real-Worls Scene Analysis, Dagstuhl-Workshop
2011},
	volume = {LNCS},
	number = {7474},
	year = {2012},
	pages = {329-355},
	publisher = {Springer},
	organization = {Springer},
	doi = {10.1007/978-3-642-34091-8_15},
	author = {Daniel Kondermann and Steffen Abraham and W. F{\"o}rstner and Gehrig, S. and Imiya, A. and Bernd J{\"a}hne and Klose, F. and Magor, M. and Helmut Mayer and Mester, R. and Pajdla, T. and Reulke, R. and Zimmer, H.}
}
@conference {jaehne2012k,
	title = {Plenoptic image acquisition and processing},
	booktitle = {Proc.\ Int. Symp. Microoptical Imaging and Projection (MIPS2012)},
	year = {2012},
	pages = {87--89},
	doi = {10.5281/zenodo.10950},
	author = {Bernd J{\"a}hne}
}
@conference {geese2012a,
	title = {Scene based maximum likelihood PRNU and DSNU non uniformity correction},
	booktitle = {Forum Bildverarbeitung},
	year = {2012},
	pages = {71--82},
	publisher = {KIT Scientific Publishing},
	organization = {KIT Scientific Publishing},
	doi = {10.5445/KSP/1000030440},
	url = {http://digbib.ubka.uni-karlsruhe.de/volltexte/1000030440},
	author = {Geese, Marc and Paul Ruhnau and Bernd J{\"a}hne},
	editor = {F. Puente Leon and M. Heizmann}
}
@conference {richter2012,
	title = {The Schmidt Number Dependency of Air-Sea Gas Exchange with Varying Surfactant Coverage},
	booktitle = {SOLAS Open Science Conference, Washington State, USA},
	year = {2012},
	author = {Kerstin E. Richter and Roland Rocholz and Bernd J{\"a}hne}
}
@conference {kiefhaber2012,
	title = {Water Surface Topography Measurements with the Reflective Stereo Slope Gauge},
	booktitle = {AGU Ocean Science Meeting 2012, Salt Lake City},
	year = {2012},
	doi = {10.5281/zenodo.12333},
	author = {Daniel Kiefhaber and Julia Schaper and Roland Rocholz and Christopher J. Zappa and William E. Asher and Jessup, A.T. and Bernd J{\"a}hne}
}
@conference {schimpf2011b,
	title = {The 2009 SOPRAN active thermography pilot experiment in the Baltic Sea},
	booktitle = {Gas Transfer at Water Surfaces 2010},
	year = {2011},
	pages = {358--367},
	doi = {10.5281/zenodo.14956},
	url = {http://hdl.handle.net/2433/156156},
	author = {Uwe Schimpf and Leila Nagel and Bernd J{\"a}hne},
	editor = {S. Komori and W. R. McGilles and R. Kurose}
}
@booklet {jaehne2011a,
	title = {Bringing the ocean inside the lab, image processing in environmental sciences},
	year = {2011},
	url = {www.laborundmore.de/},
	author = {Bernd J{\"a}hne}
}
@conference {rocholz2011a,
	title = {Combined visualization of wind waves and water surface temperature},
	booktitle = {Gas Transfer at Water Surfaces 2010},
	year = {2011},
	pages = {496--506},
	doi = {10.5281/zenodo.14957},
	url = {http://hdl.handle.net/2433/156156},
	author = {Roland Rocholz and Sven Wanner and Uwe Schimpf and Bernd J{\"a}hne},
	editor = {S. Komori and W. R. McGilles and R. Kurose}
}
@conference {kraeuter2011,
	title = {A comparative lab study of tansfer velocities of volatile tracers with widely varying solubilities},
	booktitle = {DPG Fr{\"u}hjahrstagung Dresden, Fachverband Umweltphysik},
	year = {2011},
	abstract = {Die L{\"o}slichkeit einer fl{\"u}chtigen Substanz in Wasser hat einen entscheidenden Einfluss auf den Gasaustausch zwischen Ozean und Atmosph{\"a}re. Bei Stoffen mit einer sehr hohen L{\"o}slichkeit wird der Austausch durch Diffusion in der luftseitigen Grenzschicht kontrolliert und bei solchen mit einer sehr niedrigen L{\"o}slichkeit von der wasserseitigen Grenzschicht. Bei vielen umweltrelevanten Stoffen (z.B. Aceton, Acetaldehyd, Acetonitril) ist es aber ein Wechselspiel von beiden Prozessen. Die Kombination der Prozesse ist bisher experimentell nicht untersucht worden und es gibt nur einfache Modelle, welche die Intermittenz der Prozesse ber{\"u}cksichtigen. In einem ersten Laborexperiment am Aeolotron, einem ringf{\"o}rmigen Wind-Wellen-Kanal, wurden die Transferwiderst{\"a}nde vieler Gase mit unterschiedlichen L{\"o}slichkeiten bei verschiedenen Windgeschwindigkeiten (1,4 m/s bis 8,4 m/s) bestimmt. Die dimensionslosen L{\"o}slichkeiten der verwendeten Gase deckten einen Bereich von 5 Gr{\"o}{\ss}enordnungen ab. Die Gaskonzentrationen wurden durch FTIR-Spektroskopie (Fourier Transform Infrared Spectroscopy) und mit einem PTR-MS (Proton Transfer Reaction - Mass Spectrometer) gemessen. Die Partitionierung des Transferwiderstandes von Gasen mittlerer L{\"o}slichkeit in einen luftseitigen und wasserseitigen Teil konnte nachgewiesen werden.},
	doi = {10.5281/zenodo.12327},
	url = {http://www.dpg-verhandlungen.de/year/2011/conference/dresden/part/up/session/1/contribution/29},
	author = {Christine Kr{\"a}uter and Kerstin E. Richter and Bernd J{\"a}hne and Evridiki Mesarchaki and Jonathan Williams}
}
@booklet {jaehne2011,
	title = {Der Ozean im Labor, Bildverarbeitung in den Umweltwissenschaften},
	year = {2011},
	url = {www.laborundmore.de/},
	author = {Bernd J{\"a}hne}
}
@booklet {jaehne2011c,
	title = {Der Standard 1288 der European Machine Vision Association (EMVA 1288): Was macht die Qualit{\"a}t aus?},
	year = {2011},
	url = {http://www.qe-online.de/home},
	author = {Bernd J{\"a}hne}
}
@booklet {jaehne2011b,
	title = {Der Standard EMVA 1288: Objektive Charakterisierung von Bildsensoren und digitalen Kameras},
	year = {2011},
	url = {www.elektroniknet.de},
	author = {Bernd J{\"a}hne}
}
@conference {schmidt2011b,
	title = {Efficient and robust reduction of motion artifacts for 3D time-of-flight cameras},
	booktitle = {International Conference on 3D Imaging 2011, Li{\`e}ge, Belgium},
	year = {2011},
	doi = {10.1109/IC3D.2011.6584391},
	author = {Schmidt, Mirco and Bernd J{\"a}hne}
}
@conference {mischler2011,
	title = {Experimental setup for the investigation of bubble mediated gas exchange},
	booktitle = {Gas Transfer at Water Surfaces 2010},
	year = {2011},
	pages = {238--248},
	doi = {10.5281/zenodo.14953},
	url = {http://hdl.handle.net/2433/156156},
	author = {Wolfgang Mischler and Roland Rocholz and Bernd J{\"a}hne},
	editor = {S. Komori and W. R. McGilles and R. Kurose}
}
@conference {wanner_11_framework,
	title = {A Framework for Interactive Visualization and Classification of Dynamical Processes at the Water Surface},
	booktitle = {16th International Workshop on Vision, Modelling and Visualization},
	year = {2011},
	note = {1},
	pages = {199-206},
	publisher = {Eurographics Association, Germany},
	organization = {Eurographics Association, Germany},
	doi = {10.2312/PE/VMV/VMV11/199-206},
	author = {Sven Wanner and Christoph Sommer and Roland Rocholz and Fred A. Hamprecht and Bernd J{\"a}hne},
	editor = {Eisert, P. and Joachim Hornegger and Konrad Polthier}
}
@conference {wanner2011,
	title = {A framework for interactive visualization and classification of dynamical processes at the water surface},
	booktitle = {16th International Workshop on Vision, Modelling and Visualization},
	year = {2011},
	pages = {199--206},
	publisher = {Eurographics Association, Germany},
	organization = {Eurographics Association, Germany},
	doi = {10.2312/PE/VMV/VMV11/199-206},
	author = {Sven Wanner and Christoph Sommer and Roland Rocholz and Jung, M. and Fred A. Hamprecht and Bernd J{\"a}hne},
	editor = {Peter Eisert and Joachim Hornegger and Konrad Polthier}
}
@incollection {wanner2011generating,
	title = {Generating EPI representations of 4D light fields with a single lens focused plenoptic camera},
	year = {2011},
	pages = {90--101},
	publisher = {Springer},
	doi = {10.1007/978-3-642-24028-7_9},
	author = {Sven Wanner and Fehr, Janis and Bernd J{\"a}hne},
	editor = {G. Bebis and et al.}
}
@conference {schmidt2011a,
	title = {High frame rate for 3D time-of-flight cameras by dynamic sensor calibration},
	booktitle = {Proceedings IEEE International Conference on Computational Photography (ICCP)},
	year = {2011},
	pages = {1--8},
	abstract = {3D Time-of-Flight cameras are able to deliver robust depth maps of dynamic scenes. The frame rate, however, is limited because today{\textquoteright}s systems utilizing two-tap sensors need to acquire the required raw images in multiple instances in order to compute one depth map. These multiple raw images allow canceling out systematic errors introduced by asymmetries in the two taps, which otherwise would distort the reconstructed depth map. This work presents a method to implicitly calibrate these asymmetries of multi-tap 3D Time-of-Flight sensors. The calibration data are gathered from arbitrary live acquisitions possibly in real-time. The proposed correction of raw data supersedes the commonly used averaging technique. Thus it is possible to compute multiple depth maps from a single set of raw images. This increases the frame rate by at least a factor of two. The method is verified using real camera data and is evaluated quantitatively.},
	doi = {10.1109/ICCPHOT.2011.5753121},
	author = {Schmidt, Mirko and Klaus Zimmermann and Bernd J{\"a}hne}
}
@conference {friedl_2011,
	title = {Hochaufl{\"o}sende raumzeitliche Messung von fl{\"u}ssigkeitsseitigen Konzentrationsfeldern an der wind- und wellenbewegten Wasseroberfl{\"a}che},
	booktitle = {DPG Fr{\"u}hjahrstagung Dresden},
	year = {2011},
	abstract = {Konzentrationsprofile in der 20 bis 200 {\textmu}m dicken Massengrenzschicht innerhalb der wasserseitigen viskosen Grenzschicht an einer wind- und wellenbewegten, freien Wasseroberfl{\"a}che konnten bisher nicht gemessen werden. Alle bisherigen Messungen wurden an ebenen Wasseroberfl{\"a}chen in Tanks mit bodeninduzierter Turbulenz durchgef{\"u}hrt. Die erstmalige Messung vertikaler Konzentrationsprofile mit einer Aufl{\"o}sung von 11.4 {\textmu}m und einer Bildfrequenz von 973 Hz ist durch Verwendung der Laser induzierten Phosphoreszenz gelungen. Der dabei verwendete Farbstoff ist ein neuer, lichtempfindlicher Ruthenium Komplex, dessen Quenchkonstante den 17-fachen Wert im Vergleich zu der bisher benutzen Pyrenbutters{\"a}ure (PBA) besitzt. Zur Anregung der Phosphoreszenz wird ein auf unter 150 {\textmu}m fokussierter Laser mit einer Wellenl{\"a}nge von 445nm verwendet. Der Scheimpflugaufbau mit schr{\"a}gen Kanalw{\"a}nden des linearen Wind-Wellen-Kanals erm{\"o}glicht die Beobachtung wasserseitiger Konzentrationsprofile auch bei wellenbewegter Wasseroberfl{\"a}che. Im n{\"a}chsten Schritt werden zeitaufgel{\"o}ste, zweidimensionale Konzentrationsfelder quer zur Windrichtung aufgenommen. Erste Tests zeigen vielversprechende Ergebnisse.},
	url = {http://www.dpg-verhandlungen.de/year/2011/conference/dresden/part/up/session/5/contribution/3},
	author = {Felix Friedl and Alexandra G. Herzog and Pius Warken and Bernd J{\"a}hne}
}
@conference {kiefhaber2011b,
	title = {Improved optical instrument for the measurement of water wave statistics in the field},
	booktitle = {Gas Transfer at Water Surfaces 2010},
	year = {2011},
	pages = {524--534},
	doi = {10.5281/zenodo.14958},
	url = {http://hdl.handle.net/2433/156156},
	author = {Daniel Kiefhaber and Roland Rocholz and Bernd J{\"a}hne},
	editor = {S. Komori and W. R. McGilles and R. Kurose}
}
@conference {richter2011a,
	title = {A laboratory study of the Schmidt number dependency of air-water gas transfer},
	booktitle = {Gas Transfer at Water Surfaces 2010},
	year = {2011},
	pages = {322--332},
	doi = {10.5281/zenodo.14955},
	url = {http://hdl.handle.net/2433/156156},
	author = {Kerstin E. Richter and Bernd J{\"a}hne},
	editor = {S. Komori and W. R. McGilles and R. Kurose}
}
@conference {schimpf2011,
	title = {Lock-in thermography at the ocean surface: a local and fast method to investigate heat and gas exchange between ocean and atmosphere},
	booktitle = {DPG Fr{\"u}hjahrstagung Dresden, Fachverband Umweltphysik},
	year = {2011},
	abstract = {Heat is used as a proxy tracer for gases to study the transport processes across the sea-surface interface to obtain a detailed insight into the diffusive and turbulent processes controlling the transport. A carbon dioxide laser forces a periodically varying heat flux density onto the water surface and the amplitude damping and phase shift of the sea surface temperature is measured from infrared image sequences. The transport process can be treated by linear system theory and the relation between the input signal (periodically varying surface flux density) and the output (surface temperature) is estimated. Within the framework of the SOPRAN initiative three field experiments in the Baltic Sea were conducted. The locally derived heat transfer rates are scaled to gas transfer rates, which are in good agreement with empirical gas transfer wind speed relationships for moderate winds speeds. At high wind speed, the transfer rates are lower, which is explained by the fact that heat transport is insensitive to bubble-mediated gas transfer, i.e. it measures only a part of the transfer process directly at the water surface. Together with eddy covariance measurements a significant improvement of the parameterization of heat and gas transfer velocities can be expected.},
	url = {http://www.dpg-verhandlungen.de/year/2011/conference/dresden/part/up/session/1/contribution/28},
	author = {Uwe Schimpf and Leila Nagel and Bernd J{\"a}hne}
}
@conference {kiefhaber2011a,
	title = {Mean square slope measurements in the field with the reflective stereo slope gauge},
	booktitle = {EGU General Assembly, Vienna},
	year = {2011},
	abstract = {An optical instrument for the measurement of surface ocean small-scale wave statistics has been developed. This reflective stereo slope gauge (RSSG) is capable of simultaneous measurements of height and slope statistics of the water surface in the field. The instrument is a significant technical improvement of the early work by Waas and J{\"a}hne (1992) and comprises a stereo camera setup, artificial light sources and a wind following system. The measurement principle is similar to Cox \& Munk{\textquoteright}s derivation of slope statistics from photographs of Sun glitter (Cox and Munk, 1954). However, the RSSG uses artificial light sources instead of relying on natural illumination and can thus be used independent of daytime or cloud cover. The probability distribution of the occurrence of specular reflections at given image coordinates can be related to the probability distribution of the surface slope, if the position of the instrument relative to the water surface is known. The slope probability distribution is measured for small slopes up to 0.15. From this partial probability distribution, estimates of the mean square slope (mss) and other statistical parameters can be extracted. The distance from of the instrument to the water surface is obtained from stereo triangulation, while an inclination sensor measures its tilt. Stereo triangulation at the specular reflecting water surface requires the use of two light sources in complementary positions to ensure that both cameras detect reflections coming from the same surface patches. Furthermore, to guarantee that each camera can only sees the corresponding light source, the stereo images are acquired sequentially and the LED light sources are pulsed. The water surface does not change significantly in between the image acquisitions, since the exposure time (and thus the minimum delay of the second image acquisition) is limited to 0.2 ms. The instrument can measure the along-wind and cross-wind mean square slope components, even under varying wind conditions. A wind following system was implemented that is able to rotate the stereo base to keep it aligned in an along-wind or cross-wind direction. Even though the instrument cannot record slope time series and only makes statistic measurements, it has significant advantages over other techniques that are commonly used. Measurements are non-invasive (no instrument parts suspended into or submersed in water) and mostly independent of natural illumination (light source peak wavelength is 940 nm, IR filters suppress skylight, only direct sun glitter may cause complications), not influenced by upwelling light (strong absorption of light at 940 nm by water) and have a spatial resolution that allows the measurement of slope statistics also for capillary waves. At the same time, the (gravity) wave amplitudes can be inferred from the stereo information. The RSSG was characterized and tested in the laboratory and deployed to the Baltic Sea in July and September 2010 to perform local wave statistics measurements at the footprint of heat exchange experiments with the active controlled flux technique (Schimpf et al., 2010). First results from these experiments that demonstrate the capability of the RSSG to measure wave slope statistics in a variety of conditions are presented.},
	doi = {10.5281/zenodo.12331},
	author = {Daniel Kiefhaber and Roland Rocholz and Julia Schaper and G{\"u}nther Balschbach and Bernd J{\"a}hne}
}
@conference {kiefhaber2011,
	title = {Measurement of ocean wave statistics with the reflective stereo slope gauge},
	booktitle = {DPG Fr{\"u}hjahrstagung Dresden, Fachverband Umweltphysik},
	year = {2011},
	abstract = {An optical instrument for the measurement of surface ocean small-scale wave statistics has been developed. This reflective stereo slope gauge (RSSG) is a significant technical improvement of the early work by Waas and J{\"a}hne (1992) and capable of simultaneous measurements of height and slope statistics of the water surface in the field. It comprises a stereo camera setup to measure wave heights by stereo triangulation. The slope measurement is based on Cox \& Munk{\textquoteright}s derivation of slope statistics from photographs of sun glitter (1954) but uses artificial light sources to be independent of natural illumination. The probability distribution of the occurrence of specular reflections in the images can be related to the probability distribution of the surface slope. Although the instrument only makes statistical measurements, it has significant advantages over other common techniques. Measurements are non-invasive (no instrument parts suspended into or submersed in water) and mostly independent of natural illumination (IR light source with},
	url = {http://www.dpg-verhandlungen.de/year/2011/conference/dresden/part/up/session/1/contribution/30},
	author = {Daniel Kiefhaber and Roland Rocholz and G{\"u}nther Balschbach and Julia Schaper and Bernd J{\"a}hne}
}
@article {erz2011a,
	title = {Optimale Kameraauswahl f{\"u}r maschinelles Sehen durch standardisierte Charakterisierung},
	journal = {tm --- Technisches Messen},
	volume = {78},
	year = {2011},
	pages = {377--383},
	doi = {10.1524/teme.2011.0151},
	author = {Michael Erz and Bernd J{\"a}hne}
}
@conference {haug2010a,
	title = {6 DoF appearance-based object localization with local covariant features},
	booktitle = {Forum Bildverarbeitung},
	year = {2010},
	pages = {13--24},
	publisher = {KIT Scientific Publishing},
	organization = {KIT Scientific Publishing},
	url = {http://digbib.ubka.uni-karlsruhe.de/volltexte/1000020266},
	author = {Florian Haug and Bernd J{\"a}hne},
	editor = {F. Puente Leon and M. Heizmann}
}
@conference {maier-hein2010a,
	title = {Accounting for an-iso-tro-pic noise in fine registration of time-of-flight range data with high-resolution surface data},
	booktitle = {Medical Image Computing and Computer-Assisted Intervention (MICCAI 2010)},
	volume = {6361},
	year = {2010},
	pages = {251--258},
	publisher = {Springer},
	organization = {Springer},
	abstract = {Time-of-Flight (ToF) sensors have become a considerable alternative to conventional surface acquisition techniques such as laser range scanning and stereo vision. Application of ToF cameras for the purpose of intra-operative registration requires matching of the noisy surfaces generated from ToF range data onto pre-interventionally acquired high-resolution surfaces. The contribution of this paper is two-fold: Firstly, we present a novel method for fine rigid registration of noisy ToF data with high-resolution surface meshes taking into account both, the noise characteristics of ToF cameras and the resolution of the target mesh. Secondly, we introduce an evaluation framework for assessing the performance of ToF registration methods based on physically realistic ToF range data generated from a virtual scence. According to experiments within the presented evaluation framework, the proposed method outperforms the standard ICP algorithm with respect to correspondence search and transformation computation, leading to a decrease in the target registration error (TRE) of more than 70\%.},
	doi = {10.1007/978-3-642-15705-9_31},
	author = {Lena Maier-Hein and Schmidt, Mirko and A. M. Franz and Thiago R. dos Santos and Alexander Seitel and Bernd J{\"a}hne and J. M. Fitzpatrick and Hans-Peter Meinzer}
}
@article {jaehne2010b,
	title = {EMVA 1288 standard for machine vision -- objective specification of vital camera data},
	journal = {Optik \& Photonik},
	volume = {5},
	year = {2010},
	pages = {53--54},
	doi = {10.1002/opph.201190082},
	author = {Bernd J{\"a}hne}
}
@conference {herzog2010c,
	title = {Estimating water-sided vertical gas concentration profiles by inverse modeling},
	booktitle = {2nd Int. Conf. Eng. Optimization, Lisbon, 6--9. Sep. 2010},
	year = {2010},
	author = {Alexandra G. Herzog and T. Binder and Felix Friedl and Bernd J{\"a}hne}
}
@conference {schmidt2010,
	title = {Exact modelling of time-of-flight cameras for optimal depth maps},
	booktitle = {International Conference on Computational Photography (ICCP) 2010},
	year = {2010},
	note = {Poster},
	author = {Schmidt, Mirko and Michael Erz and Klaus Zimmermann and Bernd J{\"a}hne}
}
@conference {jaehne2010,
	title = {Investigating the mechanisms of air-water gas transfer by quantitative imaging techniques: history, current progress and remaining challenges},
	booktitle = {6th Int. Symp. Gas Transfer at Water Surfaces, Kyoto, May 17--21, 2010},
	year = {2010},
	note = {abstract keynote talk},
	doi = {10.5281/zenodo.14927},
	author = {Bernd J{\"a}hne}
}
@conference {jehle_10_learning,
	title = {Learning of Optimal Illumination for Material Classification},
	booktitle = {Proceedings of the 32nd DAGM Symposium on Pattern Recognition, Darmstadt, Germany},
	number = {6376/2010},
	year = {2010},
	note = {1},
	pages = {563-572},
	publisher = {Springer},
	organization = {Springer},
	doi = {10.1007/978-3-642-15986-2_57},
	author = {Markus Jehle and Christoph Sommer and Bernd J{\"a}hne},
	editor = {Goesele, M. and Roth, S. and Schiele, B. and Schindler, K. and Kuijper, A.}
}
@conference {jehle2010,
	title = {Learning of optimal illumination for material classification},
	booktitle = {Pattern Recognition},
	volume = {6376},
	year = {2010},
	pages = {563--572},
	publisher = {Springer},
	organization = {Springer},
	abstract = {We present a method to classify materials in illumination series data. An illumination series is acquired using a device which is capable to generate arbitrary lighting environments covering nearly the whole space of the upper hemisphere. The individual images of the illumination series span a high-dimensional feature space. Using a random forest classifier different materials, which vary in appearance (which itself depends on the patterns of incoming illumination), can be distinguished reliably. The associated Gini feature importance allows for determining the features which are most relevant for the classification result. By linking the features to illumination patterns a proposition about optimal lighting for defect detection can be made, which yields valuable information for the selection and placement of light sources.},
	doi = {10.1007/978-3-642-15986-2_57},
	author = {Markus Jehle and Christoph Sommer and Bernd J{\"a}hne},
	editor = {Goesele, Michael and Roth, Stefan and Schiele, Bernt and Schindler, Konrad and Kuijper, Arjan}
}
@conference {lin2010,
	title = {Multi-frequency multi-sampling fluorescence lifetime imaging using a high-speed line-scan camera},
	booktitle = {Optics, Photonics, and Digital Technologies for Multimedia Applications, 12--15 April 2010, Brussels},
	volume = {7723},
	year = {2010},
	pages = {77231S},
	doi = {10.1117/12.854763},
	author = {Zhuang Lin and Michael Erz and Bernd J{\"a}hne},
	editor = {P. Schelkens and T. Ebrahimi and F. Truchetet and P. Saarikko and G. Cristobal}
}
@conference {voss2010,
	title = {A new approach for 3C3D measurements of aqueous boundary layer flows relative to the wind-wave undulated interface},
	booktitle = {6th Int. Symp. Gas Transfer at Water Surfaces, Kyoto, May 17--21, 2010},
	year = {2010},
	note = {poster},
	doi = {10.5281/zenodo.14930},
	author = {Bj{\"o}rn Voss and Alexander Heinlein and Bernd J{\"a}hne and Christoph S. Garbe}
}
@conference {jehle_10_optimal,
	title = {Optimal Lighting for Defect Detection: Illumination Systems, Machine
Learning, and Practical Verification},
	booktitle = {Forum Bildverarbeitung, Regensburg, 02.-03.12.2010},
	year = {2010},
	note = {1},
	pages = {301-312},
	publisher = {KIT SCientific Publishing},
	organization = {KIT SCientific Publishing},
	author = {Markus Jehle and Bernd J{\"a}hne},
	editor = {F. Puente Leon and Heinzmann, M.}
}
@conference {jehle2010a,
	title = {Optimal lighting for defect detection: illumination systems, machine learning, and practical verification},
	booktitle = {Forum Bildverarbeitung},
	year = {2010},
	pages = {241--252},
	publisher = {KIT Scientific Publishing},
	organization = {KIT Scientific Publishing},
	url = {http://digbib.ubka.uni-karlsruhe.de/volltexte/1000020266},
	author = {Markus Jehle and Bernd J{\"a}hne},
	editor = {F. Puente Leon and M. Heizmann}
}
@conference {erz2010,
	title = {Optimierte Kameraauswahl f{\"u}r maschinelles Sehen durch standardisierte Charakterisierung des bildgebenden Systeme},
	booktitle = {Forum Bildverarbeitung},
	year = {2010},
	pages = {155--166},
	publisher = {KIT Scientific Publishing},
	organization = {KIT Scientific Publishing},
	url = {http://digbib.ubka.uni-karlsruhe.de/volltexte/1000020266},
	author = {Michael Erz and Bernd J{\"a}hne},
	editor = {F. Puente Leon and M. Heizmann}
}
@conference {herzog2010a,
	title = {Simultaneous high-resolution LIF measurements of dissolved gas concentration fields and measurements of wave slope at a wavy free water surface with wind-induced turbulence},
	booktitle = {15h Int. Symp on Appl. Laser Techniques to Fluid Mechanics, Lisbon, Portugal, July 05--08, 2010},
	year = {2010},
	doi = {10.5281/zenodo.15132},
	author = {Alexandra G. Herzog and Felix Friedl and Bernd J{\"a}hne}
}
@conference {atif2010,
	title = {A space-variant (3D) image simulation tool for computational cameras},
	booktitle = {International Conference on Computational Photography (ICCP) 2010},
	year = {2010},
	note = {Poster},
	author = {Atif, Muhammad and Klaus Zimmermann and Bernd J{\"a}hne}
}
@conference {herzog2010,
	title = {Spatio-temporal fluctuations of water-sided gas concentration fields under wind-induced turbulence},
	booktitle = {6th Int. Symp. Gas Transfer at Water Surfaces, Kyoto, May 17--21, 2010},
	year = {2010},
	note = {abstract},
	doi = {10.5281/zenodo.14929},
	author = {Alexandra G. Herzog and Felix Friedl and Bernd J{\"a}hne}
}
@conference {rocholz2010,
	title = {Spatio-temporal measurements of short wind water waves},
	booktitle = {EGU General Assembly 2010, Symposium AS2.2},
	year = {2010},
	pages = {EGU2010-5509},
	author = {Roland Rocholz and Bernd J{\"a}hne}
}
@conference {jaehne2010a,
	title = {Wind/wave-tunnel measurements of chemical enhancement of the carbon dioxide gas exchange rate},
	booktitle = {6th Int. Symp. Gas Transfer at Water Surfaces, Kyoto, May 17--21, 2010},
	year = {2010},
	note = {abstract},
	doi = {10.5281/zenodo.14928},
	author = {Bernd J{\"a}hne and Kai Degreif and Joachim Kuss}
}
@incollection {beushausen2009,
	title = {2D-measurement technique for simultaneous quantitative determination of mixing ratio and velocity field in microfluidic applications},
	volume = {106},
	year = {2009},
	pages = {155--164},
	publisher = {Springer},
	abstract = {Two-dimensional Molecular-Tagging-Velocimetry (2D-MTV) has been used to investigate velocity fields of liquid flow in a micro mixer. Optical tagging was realized by using caged dye. For the first time patterns were generated by structured laser illumination using optical masks. This allows the generation of nearly any imaginable pattern. The flow induced deformation of the optically written pattern is tracked by imaging of laser induced fluorescence. Quantitative analysis of raw image series is carried out by novel optical flow based techniques. A comparison to the standard technique of uPIV has also been conducted. Additionally Planar Spontaneous Raman Scattering (PSRS) was applied in order to determine concentration fields for mixtures of ethanol and water.},
	doi = {10.1007/978-3-642-01106-1_16},
	author = {Volker Beushausen and Karsten Roetmann and Waldemar Schmunk and Mike Wellhausen and Christoph S. Garbe and Bernd J{\"a}hne},
	editor = {W. Nitsche and C. Dobriloff}
}
@incollection {jaehne2009,
	title = {Air-sea gas exchange},
	year = {2009},
	note = {invited},
	pages = {147-156},
	publisher = {Elsevier},
	abstract = {The exchange of inert and sparingly soluble gases, including carbon dioxide, methane, and oxygen, between the atmosphere and oceans is controlled by a 20-200 um-thick boundary layer at the top of the ocean. The hydrodynamics in this layer is significantly different from boundary layers at rigid walls since the orbital motion of the waves is of the same order as the velocities in the viscous boundary layer. Laboratory and field measurements show that wind waves and surfactants significantly influence the gas-transfer process. Because of limited experimental techniques, the details of the mechanisms and the structure of the turbulence in the boundary layer at a wavy water surface are still not known. A number of new imaging techniques are described which give direct insight into the transfer processes and promise to trigger substantial theoretical progress in the near future.},
	doi = {10.1016/B978-012374473-9.00642-1},
	author = {Bernd J{\"a}hne},
	editor = {John H. Steele and Karl K. Turekian and Steve A. Thorpe}
}
@conference {hoernlein2009,
	title = {Boosting shift-invariant features},
	booktitle = {Pattern Recognition},
	volume = {5748},
	year = {2009},
	pages = {121--130},
	publisher = {Springer},
	organization = {Springer},
	abstract = {This work presents a novel method for training shift-invariant features using a Boosting framework. Features performing local convolutions followed by subsampling are used to achieve shift-invariance. Other systems using this type of features, e.g. Convolutional Neural Networks, use complex feed-forward networks with multiple layers. In contrast, the proposed system adds features one at a time using smoothing spline base classifiers. Feature training optimizes base classifier costs. Boosting sample-reweighting ensures features to be both descriptive and independent. Our system has a lower number of design parameters as comparable systems, so adapting the system to new problems is simple. Also, the stage-wise training makes it very scalable. Experimental results show the competitiveness of our approach.},
	doi = {10.1007/978-3-642-03798-6_13},
	author = {Thomas H{\"o}rnlein and Bernd J{\"a}hne and Herbert S{\"u}{\ss}e},
	editor = {Joachim Denzler and Gunther Notni}
}
@article {hering2009,
	title = {Correlated speckle noise in white-light interferometry: theoretical analysis of measurement uncertainty},
	journal = {Appl. Optics},
	volume = {48},
	year = {2009},
	pages = {525--538},
	abstract = {The partial coherent illumination of the specimen, which is required for white-light interferometric measurements of optically rough surfaces, directly leads to speckle. The electric field of such speckle patterns strongly fluctuates in amplitude and phase. This spatially correlated noise influences the accuracy of the measuring device. Although a variety of noise sources in white-light interferometry has been studied in recent years, they do not account for spatial correlation and, hence, they cannot be applied to speckle noise. Thus, we derive a new model enabling quantitative predictions for measurement uncertainty caused by speckle. The model reveals that the accuracy can be attributed mainly to the degree of spatial correlation, i.e., the average size of a speckle, and to the coherence length of the light source. The same parameters define the signal-to-noise ratio in the spectral domain. The model helps to design filter functions that are perfectly adapted to the noise characteristics of the respective device, thus improving the accuracy of postprocessing algorithms for envelope detection. The derived expressions are also compared to numerical simulations and experimental data of two different types of interferometers. These results are a first validation of the theoretical considerations of this article.},
	doi = {10.1364/AO.48.000525},
	author = {Marco Hering and Klaus K{\"o}rner and Bernd J{\"a}hne}
}
@conference {nagel2009a,
	title = {First results from the 2009 SOPRAN active thermography pilot experiment in the Baltic Sea},
	booktitle = {Poster abstracts SOLAS Open Science Conference, Barcelona, 16--19 Sep. 2009},
	year = {2009},
	abstract = {To improve the parametrization of the transfer velocities a novel active thermography system was developed. At the end of SOPRAN 1 it has been deployed in a pilot experiment at the bow of the research vessel FS Alkor in the Baltic sea. A periodically varying heat flux is applied by a CO2-laser. The transfer velocity is estimated by the amplitude damping and phase shift of the temperature signal in the Fourier domain, gained from the infrared images of the water surface. First results are shown. The system will be used in the second phase of the SOPRAN project on a regular base. Together with eddy covariance measurements deployed from FINO 2, a significant improvement of the parametrization of the heat an gas transfer velocities can be expected.},
	author = {Leila Nagel and Uwe Schimpf and Bernd J{\"a}hne}
}
@conference {kiefhaber2009,
	title = {Instrument development for combined height/slope/curvature statistics measurements of wind water waves in the field},
	booktitle = {Poster abstracts SOLAS Open Science Conference, Barcelona, 16--19 Sep. 2009},
	year = {2009},
	abstract = {An optical method for the measurement of slope statistics of capillary and short gravity wind waves on the ocean is currently under development. Specular reflections from infrared LED light sources are observed on the water surface with a stereo camera setup. The principle is similar to Cox \& Munk{\textquoteright}s derivation of slope statistics from photographs of the Sun{\textquoteright}s glitter. Fractional area of the speckles in the image is related to the local slope probability distribution, speckle size and brightness is correlated with surface curvature, and the local water height can be inferred from parallax in the stereo images. The instrument measures slope statistics locally, making it a beneficial appendix to air-sea interaction measurements. It is scheduled to accompany heat transfer experiments in the Baltic Sea in phase II of the SOPRAN project.},
	author = {Daniel Kiefhaber and Roland Rocholz and Bernd J{\"a}hne}
}
@techreport {jaehne2009techber,
	title = {Methoden zur schnellen und genauen Messung der Gasaustauschrate im Aelotron mit Gasen niedriger und hoher L{\"o}slichkeit},
	year = {2009},
	institution = {Forschungsgruppe Bildverarbeitung, Interdisziplin{\"a}res Zentrum f{\"u}r Wissenschaftliches Rechnen und Institut f{\"u}r Umweltphysik, Universit{\"a}t Heidelberg},
	author = {Bernd J{\"a}hne}
}
@conference {richter2009a,
	title = {New schemes for fast measurements of air-sea gas exchange in the Aeolotron lab},
	booktitle = {Poster abstracts SOLAS Open Science Conference, Barcelona, 16--19 Sep. 2009},
	year = {2009},
	abstract = {A number of novel experimental techniques to measure the gas transfer rates of volatile tracers in the wind/wave flume Aeolotron were developed. With the aid of the recently remodeled air conditioning system, the temperature, humidity and air flush rate could be controlled precisely in an open (exchange of air) and closed circulation system. The newly developed experimental schemes were optimized to measure gas transfer rates of half a dozen chemical species simultaneously using FTIR and UV spectroscopy together with thermographic measurements and wind wave measurements. These new experimental schemes are fast enough (temporal resolution less than a minute) to perform measurements in non-stationary and transient conditions. Results of the first series of measurements include precise measurements of the Schmidt number exponent at clean water surfaces.},
	author = {Kerstin E. Richter and Bernd J{\"a}hne}
}
@booklet {jaehne2009a,
	title = {Objektive Kriterien unterst{\"u}tzen die anwendungsorientierte Auswahl einer Kamera},
	year = {2009},
	note = {VDMA, Frankfurt},
	url = {http://www.vdma-verlag.com/home/p464.html},
	author = {Bernd J{\"a}hne}
}
@conference {mischler2009,
	title = {Optical method for measuring size-distribution and lifetime of bubbles},
	booktitle = {Poster abstracts SOLAS Open Science Conference, Barcelona, 16--19 Sep. 2009},
	year = {2009},
	abstract = {A high resolution imaging method for measuring the size distribution of bubbles entrained by water jets between 10-1000 um in diameter is presented. The bubble clouds are similar to those produced by breaking water waves. The goal of these measurements is the validation of models for bubble mediated gas transfer. A Depth from Focus technique is used to determine the 3D position and the size of the bubbles at the same time. This yields the size-distribution and its dependence on depth. Additionally the velocity of the bubbles is estimated using repeatedly exposed images. To evaluate the lifetime of bubbles a high-speed camera is used to count the bubbles crossing the surface. The measuring principle, image analysis and first results are presented.},
	author = {Wolfgang Mischler and Roland Rocholz and Bernd J{\"a}hne}
}
@conference {schmidt2009,
	title = {A physical model of Time-of-Flight 3D imaging systems, including suppression of ambient light},
	booktitle = {3rd Workshop on Dynamic 3-D Imaging},
	volume = {5742},
	year = {2009},
	pages = {1--15},
	publisher = {Springer},
	organization = {Springer},
	abstract = {We have developed a physical model of continuous-wave Time-of-Flight cameras, which focuses on a realistic reproduction of the sensor data. The derived simulation gives the ability to simulate data acquired by a ToF system with low computational effort. The model is able to use an arbitrary optical excitation and to simulate the sampling of a target response by a two-tap sensor, which can use any switching function. Nonlinear photo response and pixel saturation, as well as spatial variations from pixel to pixel like photo response non-uniformity (PRNU) and dark signal non-uniformity (DSNU) can be modeled. Also the influence of interfering background light and on-sensor suppression of ambient light can be simulated. The model was verified by analyzing two scenarios: The cameras response to an increasing, homogeneous irradiation as well as the systematic phase deviation caused by higher harmonics of the optical excitation. In both scenarios the model gave a precise reproduction of the observed data.},
	doi = {10.1007/978-3-642-03778-8_1},
	author = {Schmidt, Mirko and Bernd J{\"a}hne},
	editor = {Reinhard Koch and Andreas Kolb}
}
@conference {erz2009,
	title = {Radiometric and spectrometric calibrations, and distance noise measurement of TOF cameras},
	booktitle = {3rd Workshop on Dynamic 3-D Imaging},
	volume = {5742},
	year = {2009},
	pages = {28--41},
	publisher = {Springer},
	organization = {Springer},
	abstract = {This paper proposes to extend the EMVA 1288 standard to characterize the properties and noise of image sensors for ToF cameras. The concepts for radiometric and spectrometric sensitivities were extended for intensity images recorded by lock-in pixels. The characterization of the distance information was performed by describing the phase shift analogous to intensities. Results of sensitivity and noise measurements are presented for two ToF cameras: PMDTec CamCube and MESA Imaging SR3101. Both cameras had no intrinsic filter, so the quantum efficiency could be measured from UV to IR. The noise in the phase measurement could be related to the noise in the intensity.},
	doi = {10.1007/978-3-642-03778-8_3},
	author = {Michael Erz and Bernd J{\"a}hne},
	editor = {Reinhard Koch and Andreas Kolb}
}
@incollection {garbe2009,
	title = {Spatiotemporal image analysis for flow measurements},
	volume = {106},
	year = {2009},
	pages = {289--305},
	publisher = {Springer},
	abstract = {In this chapter, a framework will be presented for measuring and modeling transport processes using novel visualization techniques and extended optical flow techniques for digital image sequence analysis. In this way, parameters besides the 2-D xy velocity components can be extracted concurrently from the acquired 2-D image sequences, such as wall shear rates and momentum transport close to boundaries, diffusion coefficients, and depth z in addition to the z velocity components. Depending on the application, particularly the temporal regularization can be enhanced, leading to stabilization of results and reduction of spatial regularization. This is frequently of high importance for flows close to boundaries. Results from applications will be presented from the fields of environmental and life sciences as well as from engineering.},
	doi = {10.1007/978-3-642-01106-1_29},
	author = {Christoph S. Garbe and Daniel Kondermann and Markus Jehle and Bernd J{\"a}hne},
	editor = {W. Nitsche and C. Dobriloff}
}
@article {frank_09_theoretical,
	title = {Theoretical and Experimental Error Analysis of Continuous-Wave Time-Of-Flight Range Cameras},
	journal = {Optical Engineering},
	volume = {48, 013602},
	year = {2009},
	note = {1},
	doi = {10.1117/1.3070634},
	author = {Mario Frank and Matthias Plaue and Holger Rapp and Ullrich K{\"o}the and Bernd J{\"a}hne and Fred A. Hamprecht}
}
@article {frank2009,
	title = {Theoretical and experimental error analysis of continuous-wave time-of-flight range cameras},
	journal = {Opt. Eng.},
	volume = {48},
	year = {2009},
	pages = {013602},
	abstract = {We offer a formal investigation of the measurement principle of time-of-flight 3-D cameras using correlation of amplitude-modulated continuous-wave signals. These sensors can provide both depth maps and IR intensity pictures simultaneously and in real time. We examine the theory of the data acquisition in detail. The variance of the range measurements is derived in a concise way and we show that the computed range follows an offset normal distribution. The impact of quantization of that distribution is discussed. All theoretically investigated errors like the behavior of the variance, depth bias, saturation and quantization effects are supported by experimental results.},
	doi = {10.1117/1.3070634},
	author = {Mario Frank and Matthias Plaue and Holger Rapp and Ullrich K{\"o}the and Bernd J{\"a}hne and Fred A. Hamprecht}
}
@booklet {jaehne2009b,
	title = {Transparency for Industrial Cameras and Sensors},
	year = {2009},
	url = {http://www.gitverlag.com/de/print/4/18/issues/2009/3381.html},
	author = {Bernd J{\"a}hne and Schwarzkopf, Patrick}
}
@incollection {berthe2009,
	title = {The wall PIV measurement technique for near wall flow fields in biofliud mechanics},
	volume = {106},
	year = {2009},
	pages = {11--20},
	publisher = {Springer},
	abstract = {This chapter describes the development of a new time resolved 3D PIV technique for near wall flow field measurements. This measurement technique, called wall-PIV, is based on Beer-Lambert{\textquoteright}s law. It substitutes the classical PIV laser sheet by a diffuse, monochromatic full-field illumination that is limited to the near wall region by an absorbing molecular dye in the fluid. Aimed range of applications is the investigation of flow fields next to one- or two dimensionally curved, possibly flexing surfaces. The three dimensional three component flow estimation uses a new optical flow algorithm, based on particle trajectories. Results of the measurement technique{\textquoteright}s application on a displacement pediatric blood pump are presented.},
	doi = {10.1007/978-3-642-01106-1_2},
	author = {A. Berthe and Daniel Kondermann and Bernd J{\"a}hne and U. Ketzscher},
	editor = {W. Nitsche and C. Dobriloff}
}
@article {banerjee2008,
	title = {An active thermographic technique for highly resolved heat transport measurements in paper drying},
	journal = {APPITA Journal},
	volume = {61},
	number = {3},
	year = {2008},
	pages = {244--249},
	abstract = {A novel measurement technique, based on infrared thermography, has been applied for characterizing the thermal properties of paper with high spatial resolution. The technique is referred to as {\textquoteright}active thermography{\textquoteright} since the temperature response of a paper sheet is observed and analysed with respect to an external periodic heating. Through the analysis of the temperature response of the paper surface in the Fourier domain for different modulation frequencies of incident heat flux, heat transfer velocities across the solid-gas interface can be estimated. This in turn results in estimation of the heat capacity of paper by solving the heat balance equations of the system. The thermal heating is applied spatially homogeneously. Therefore all these calculations are performed for all pixels in the image sequence. The spatial distribution and temporal development of all these parameters were visualized. The technique shows high potential for non-invasive dynamic measurements in paper drying.},
	url = {http://search.informit.com.au/documentSummary;dn=113990239180698;res=IELHSS},
	author = {D. Banerjee and Christoph S. Garbe and Uwe Schimpf and Bernd J{\"a}hne and S. Schabel}
}
@booklet {jaehne2008d,
	title = {Bildverarbeitung verlangt nach Fortschritt - Forschung und berufliche Weiterbildung werden zum A und O},
	year = {2008},
	url = {http://www.sensorreport.ch/sen_Inhalt_5_08.ebs},
	author = {Bernd J{\"a}hne}
}
@conference {haja2008b,
	title = {A Comparison of Region Detectors for Tracking},
	booktitle = {Pattern Recognition, Proceedings 30th DAGM Symposium, Munich, Germany, June 2008},
	volume = {5096},
	year = {2008},
	pages = {112--121},
	abstract = {In this work, the performance of five popular region detectors is compared in the context of tracking. Firstly, conventional nearest-neighbor matching based on the similarity of region descriptors is used to assemble trajectories from unique region-to-region correspondences. Based on carefully estimated homographies between planar object surfaces in neighboring frames of an image sequence, both their localization accuracy and length, as well as the percentage of successfully tracked regions is evaluated and compared. The evaluation results serve as a supplement to existing studies and facilitate the selection of appropriate detectors suited to the requirements of a specific application. Secondly, a novel tracking method is presented, which integrates for each region all potential matches into directed multi-edge graphs. From these, trajectories are extracted using Dijkstra{\textquoteright}s algorithm. It is shown, that the resulting localization error is significantly lower than with nearest-neighbor matching while at the same time, the percentage of tracked regions is increased.},
	doi = {10.1007/978-3-540-69321-5_12},
	author = {Andreas Haja and Steffen Abraham and Bernd J{\"a}hne},
	editor = {Gerhard Rigoll}
}
@booklet {jaehne2008a,
	title = {Kameraauswahl nach objektiven Kriterien - Der EMVA1288 Kamerastandard},
	year = {2008},
	url = {http://www.gitverlag.com/de/print/4/18/issues/2008/3039.html},
	author = {Bernd J{\"a}hne}
}
@conference {haja2008a,
	title = {Localization accuracy of region detectors},
	booktitle = {Proceedings CVPR{\textquoteright}08},
	year = {2008},
	doi = {10.1109/CVPR.2008.4587829},
	author = {Andreas Haja and Bernd J{\"a}hne and Steffen Abraham}
}
@conference {garbe2008c,
	title = {Measuring momentum transport directly at the air water interface from active infrared thermography},
	booktitle = {Geophysical Research Abstracts},
	year = {2008},
	author = {Christoph S. Garbe and Uwe Schimpf and Bernd J{\"a}hne}
}
@article {jehle2008,
	title = {A novel method for three-dimensional three-component analysis of flow close to free water surfaces},
	journal = {Exp. Fluids},
	volume = {44},
	year = {2008},
	pages = {469--480},
	abstract = {Initial effort is made to establish a new technique for the measurement of three-dimensional three-component (3D3C) velocity fields close to free water surfaces. A fluid volume is illuminated by light emitting diodes (LEDs) perpendicularly to the surface. Small spherical particles are added to the fluid, functioning as a tracer. A monochromatic camera pointing to the water surface from above records the image sequences. The distance of the spheres to the surface is coded by means of a supplemented dye, which absorbs the light of the LEDs according to Beer-Lambert{\textquoteright}s law. By applying LEDs with two different wavelengths, it is possible to use particles variable in size. The velocity vectors are obtained by using an extension of the method of optical flow. The vertical velocity component is computed from the temporal brightness change. The setup is validated with a laminar falling film, which serves as a reference flow. Moreover, the method is applied to buoyant convective turbulence as an example for a non stationary, inherently 3D flow.},
	doi = {10.1007/s00348-007-0453-5},
	author = {Markus Jehle and Bernd J{\"a}hne}
}
@article {garbe2008b,
	title = {An optical flow MTV based technique for measuring microfluidic flow in the presence of diffusion and Taylor dispersion},
	journal = {Exp. Fluids},
	volume = {44},
	year = {2008},
	pages = {439--450},
	abstract = {A novel technique is presented for accurately measuring flow fields in microfluidic flows from molecular tagging velocimetry (MTV). Limited optical access is frequently encountered in microfluidic systems. Therefore, in this contribution we analyze the special case of tagging a line across the thin dimension of a microchannel and subsequent imaging along this line. This represents a set-up that is applicable to a wide range of microfluidic applications. A volume illumination has to be used, resulting in an integration of the visualized dye across the flow profile. This leads to the well-known effect of Taylor dispersion. Our novel technique consists of measuring motion from digital image sequences in a gradient-based approach. A motion model is developed which explicitly deals with brightness changes due to Taylor dispersion and additional molecular diffusion of dyes. The presented approach is specific to the case of a parabolic velocity profile. In the presence of these effects, an accurate computation of motion is only possible by applying this novel motion model. Our technique is tested on simulated sequences corrupted with varying levels of noise and on actual measurements. Measurements were conducted in a microfluidic mixer of precisely known flow properties. In the same mixer, a comparative study of our MTV technique to uPIV was performed. Also, the results were compared to bulk measurements of the fluid flow velocity. The novel algorithm compared favorably and also, measurements were conducted on inhomogeneous flow configurations.},
	doi = {10.1007/s00348-007-0435-7},
	author = {Christoph S. Garbe and Karsten Roetmann and Volker Beushausen and Bernd J{\"a}hne}
}
@article {jaehne2008c,
	title = {Prinzipien und Verfahren zur Aufnahme spektraler Bilddaten - Vereinfachte Bildanalyse},
	journal = {QZ},
	volume = {53},
	number = {2},
	year = {2008},
	pages = {45--48},
	author = {Bernd J{\"a}hne}
}
@article {schmidt2008a,
	title = {Range flow estimation based on photonic mixing device data},
	journal = {Int. J. Intelligent Systems Technologies and Applications},
	volume = {5},
	year = {2008},
	pages = {380--392},
	abstract = {We present techniques for computing 3D velocity fields from range data acquired with cameras working on the principles of modulation based Time-Of-Flight measurement. We derive a new variant of the range flow constraint equation that directly incorporates the transformation from sensor to world coordinate system. The presented techniques are applied to a number of range sequences with ground truth and the acquired motion estimation results are discussed.},
	doi = {10.1504/IJISTA.2008.021301},
	author = {Schmidt, Martin and Markus Jehle and Bernd J{\"a}hne}
}
@booklet {jaehne2008,
	title = {Signifikanter Umbruch zeichnet sich ab - Aktuelle Entwicklungen in der Bildverarbeitung},
	year = {2008},
	note = {VDMA, Frankfurt},
	url = {http://www.vdma-verlag.com/home/p427.html},
	author = {Bernd J{\"a}hne}
}
@article {rapp_08_theoretical,
	title = {A Theoretical and Experimental Investigation of the Systematic Errors and Statistical Uncertainties of Time-of-Flight Cameras},
	journal = {Int. J. Intelligent Systems Technologies and Applications},
	volume = {5},
	number = {3},
	year = {2008},
	note = {1},
	pages = {402-413},
	doi = {10.1504/IJISTA.2008.021303},
	author = {Holger Rapp and Mario Frank and Fred A. Hamprecht and Bernd J{\"a}hne}
}
@article {rapp2008,
	title = {A theoretical and experimental investigation of the systematic errors and statistical uncertainties of time-of-flight cameras},
	journal = {Int. J. Intelligent Systems Technologies and Applications},
	volume = {5},
	year = {2008},
	pages = {402--413},
	abstract = {The following paper presents a model to predict the systematic errors and statistical uncertainties of Time-Of-Flight (TOF) 3D imaging systems. The experimental data obtained with a custom build test setup show that the SD of the depth signal rises approximately quadratically with the depth. The most significant systematic depth error is periodic with an amplitude of around 50mm. It is provoked by the inharmonic correlation function. The inhomogeneity in each pixel (fixed pattern) accounts for a depth error of about 20mm, while illumination and reflectivity variations cause depth errors of less than 10mm, provided that no overflows occur.},
	doi = {10.1504/IJISTA.2008.021303},
	author = {Holger Rapp and Mario Frank and Fred A. Hamprecht and Bernd J{\"a}hne}
}
@article {jaehne2008b,
	title = {Zukunftsperspektiven der industriellen Bildverarbeitung - Was kann die akademische Forschung beitragen?},
	journal = {Optik \& Photonik},
	volume = {3},
	number = {3},
	year = {2008},
	pages = {28-33},
	doi = {10.1002/opph.201190203},
	author = {Bernd J{\"a}hne}
}
@conference {banerjee2007b,
	title = {An active thermographic technique for highly resolved heat transport measurements in paper drying},
	booktitle = {61st Appita Annual Conference Proceedings},
	year = {2007},
	pages = {161-167},
	publisher = {APPITA},
	organization = {APPITA},
	author = {D. Banerjee and Christoph S. Garbe and Uwe Schimpf and Bernd J{\"a}hne and S. Schabel}
}
@conference {kondermann2007,
	title = {An adaptive confidence measure for optical flows based on linear subspace projections},
	booktitle = {Proceedings of the 29th DAGM Symposium on Pattern Recognition},
	volume = {4713},
	year = {2007},
	pages = {132--141},
	publisher = {Springer},
	organization = {Springer},
	abstract = {Confidence measures are important for the validation of optical flow fields by estimating the correctness of each displacement vector. There are several frequently used confidence measures, which have been found of at best intermediate quality. Hence, we propose a new confidence measure based on linear subspace projections. The results are compared to the best previously proposed confidence measures with respect to an optimal confidence. Using the proposed measure we are able to improve previous results by up to 31\%.},
	doi = {10.1007/978-3-540-74936-3_14},
	author = {Claudia Kondermann and Daniel Kondermann and Bernd J{\"a}hne and Christoph S. Garbe and Christoph Schn{\"o}rr and Bernd J{\"a}hne},
	editor = {Fred A. Hamprecht}
}
@conference {garbe2007b,
	title = {Aktive Thermografie f{\"u}r die Untersuchung von Transportprozessen},
	booktitle = {Thermografie-Kolloquium},
	year = {2007},
	pages = {1--8},
	publisher = {Deutsche Gesellschaft f{\"u}r Zerst{\"o}rungsfreie Pr{\"u}fung e.V.},
	organization = {Deutsche Gesellschaft f{\"u}r Zerst{\"o}rungsfreie Pr{\"u}fung e.V.},
	author = {Christoph S. Garbe and D. Banerjee and Uwe Schimpf and Bernd J{\"a}hne}
}
@incollection {jaehne2007b,
	title = {Complex motion in environmental physics and live sciences},
	volume = {3417},
	year = {2007},
	pages = {92--105},
	publisher = {Springer},
	abstract = {Image sequence processing techniques are an essential tool for the experimental investigation of dynamical processes such as exchange, growth, and transport processes. These processes constitute much more complex motions than normally encountered in computer vision. In this paper, optical flow based motion analysis is extended into a generalized framework to estimate the motion field and the parameters of dynamic processes simultaneously. Examples from environmental physics and live sciences illustrate how this framework helps to tackles some key scientific questions that could not be solved without taking and analyzing image sequences.},
	doi = {10.1007/978-3-540-69866-1_8},
	author = {Bernd J{\"a}hne and Bernd J{\"a}hne}
}
@book {jaehne2007a,
	title = {Complex Motion, Proceedings of the 1st Workshop, G{\"u}nzburg, October 2004},
	volume = {3417},
	year = {2007},
	publisher = {Springer},
	organization = {Springer},
	doi = {10.1007/978-3-540-69866-1},
	author = {Bernd J{\"a}hne},
	editor = {Mester, R. and Hanno Scharr and Erhardt Barth}
}
@incollection {jaehne2007c,
	title = {Data acquisition by imaging detectors},
	year = {2007},
	pages = {1419--1436},
	publisher = {Springer},
	chapter = {24},
	abstract = {Imaging sensors convert radiative energy into an electrical signal and such sensors are available that cover the wide spectrum from gamma rays to the infrared. They accumulate an electrical signal during the exposure time and convert all the signals of an array of detectors into a time-serial analog or digital data stream. The dominate and most successful devices to perform this task are charge coupled devices (CCD). However directly addressable imaging sensors on the basis of CMOS fabrication technology are becoming more and more promising because the image acquisition, digitalization and preprocessing can be integrated on a single chip; hence yielding very fast frame rates. This chapter provides a comprehensive survey of the available imaging sensors, details the parameters that control their performance and gives practical tips to select the best camera for different imaging tasks.},
	doi = {10.1007/978-3-540-30299-5_24},
	author = {Bernd J{\"a}hne},
	editor = {C. Tropea and J. Foss and A. Yarin}
}
@incollection {jaehne2007d,
	title = {Data analysis},
	year = {2007},
	pages = {1437--1491},
	publisher = {Springer},
	chapter = {25},
	abstract = {From the beginning of science, visual observation has played a major role. At that time, the only way to document the results of an experiment was by verbal description and manual drawings. The next major step was the invention of photography more than one and a half centuries ago, which enabled experimental results to be documented objectively. In experimental fluid mechanics, flow visualization techniques gave direct insight into complex flows, but it was very difficult and time consuming to extract quantitative measurements from photographs and films. Nowadays, we are in the middle of a second revolution sparked by the rapid progress in both photonics and computer technology. Sensitive solid-state cameras are available that acquire digital image data, and standard personal computers and workstations have become powerful enough to process these data. These technologies are now available to any scientist or engineer. As a consequence, image processing has expanded and continues to expand rapidly from a few specialized applications into a standard scientific tool. This chapter gives a brief presentation of some of the most important general image processing techniques that are required to process image data in experimental fluid mechanics. The second section (Sect. 25.2) deals with motion analysis. The most important methods are introduced and classified according to the fundamental principles, assumptions and approximations upon which they are based.},
	doi = {10.1007/978-3-540-30299-5_25},
	author = {Bernd J{\"a}hne and Michael Klar and Markus Jehle},
	editor = {C. Tropea and J. Foss and A. Yarin}
}
@incollection {garbe2007c,
	title = {Estimating the viscous shear stress at the water surface from active thermography},
	year = {2007},
	pages = {223--239},
	publisher = {Springer-Verlag},
	abstract = {A novel technique is presented that makes it possible to measure the viscous shear stress from active thermography. With a CO2 laser, patterns are written to the sea surface. This temperature structure is distorted by the linear velocity profile in the viscous boundary layer. Due to the non-zero penetration depth of both the laser and the infrared camera, this vertical velocity profile can be resolved. By resolving the velocity profile, the viscous shear stress can be extracted from the recorded image sequences. At the same time, the flow field at the water surface can be measured accurately. Estimating both quantities is only possible by modeling the imaging process as well as the velocity profile in the boundary layer. The model parameters can then be computed in a standard parameter estimation framework. This novel technique was tested both on simulated data and on measurements conducted in a small annular wind-wave flume. The friction velocity computed in this fashion compared favorably to independent measurements. Although not tested yet, this technique should be equally applicable to field measurements.},
	doi = {10.1007/978-3-540-36906-6_16},
	author = {Kai Degreif and Bernd J{\"a}hne and Bernd J{\"a}hne},
	editor = {Christoph S. Garbe and Christoph S. Garbe and Handler, R. A.}
}
@incollection {hara2007,
	title = {Estimation of air-sea gas and heat fluxes from infrared imagery based on near surface turbulence models},
	year = {2007},
	publisher = {Springer-Verlag},
	abstract = {Water surface infrared images were obtained during the GASEX2001 experiment in the South Equatorial Pacific waters and during the laboratory experiment in the AEOLOTRON wind wave tank at University of Heidelberg in October 2004. The infrared imagery during these experiments reveals coexistence of roller type turbulence and intermittent breaking events. Previous interpretations of the infrared images relied on the surface renewal model, in which the water surface is assumed to be occasionally renewed by bursts of turbulent eddies reaching the water surface. A new complementary model (eddy renewal model) based on stationary and spatially periodic turbulent eddies is developed to reinterpret the infrared images of near surface turbulence. The model predicts warm elongated patches bounded by cold streaks aligned with mean wind, being consistent with field and laboratory infrared images. The model yields bulk temperature estimates and mean heat flux estimates that are very close to those based on the surface renewal model.},
	doi = {10.1007/978-3-540-36906-6_17},
	author = {T. Hara and VanInwegen, E. and J. Wendelbo and Uwe Schimpf and Bernd J{\"a}hne and Nelson M. Frew and Bernd J{\"a}hne},
	editor = {Christoph S. Garbe and Christoph S. Garbe and Handler, R. A.}
}
@conference {garbe2007,
	title = {Fluid flow estimation through integration of physical flow configurations},
	booktitle = {Proceedings of the 29th DAGM Symposium on Pattern Recognition},
	year = {2007},
	pages = {92--101},
	publisher = {Springer},
	organization = {Springer},
	abstract = {The measurement of fluid flows is an emerging field for optical flow computation. In a number of such applications, a tracer is visualized with modern digital cameras. Due to the projective nature of the imaging process, the tracer is integrated across a velocity profile. In this contribution, a novel technique is presented that explicitly models brightness changes due to this integration. Only through this modeling is an accurate estimation of the flow velocities feasible. Apart from an accurate measurement of the fluid flow, also the underlying velocity profile can be reconstructed. Applications from shear flow, microfluidics and a biological applications are presented.},
	doi = {10.1007/978-3-540-74936-3_10},
	author = {Christoph S. Garbe and Christoph Schn{\"o}rr and Bernd J{\"a}hne},
	editor = {Fred A. Hamprecht}
}
@conference {withopf2007a,
	title = {Improved training algorithm for tree-like classifiers and its application to vehicle detection},
	booktitle = {Proc. IEEE Intelligent Transportation Systems Conference (ITSC)},
	year = {2007},
	pages = {642--647},
	abstract = {We propose a new training algorithm for tree classifiers and cascades for object detection and compare it to a standard algorithm for cascade training. Our experiments show that the proposed algorithm significantly reduces the number of features needed per stage by incorporating the output of the previous stage as a weak learner into the next stage. This approach also speeds up the classification while maintaining the same detection accuracy. The analysis of the features selected by the algorithm provides further insights into its functioning.},
	doi = {10.1109/ITSC.2007.4357644},
	author = {Daniel Withopf and Bernd J{\"a}hne}
}
@incollection {jaehne2007f,
	title = {The influence of intermittency on air/water gas transfer measurements},
	year = {2007},
	publisher = {Springer-Verlag},
	abstract = {This paper theoretically investigates the influence of intermittency on determining average transfer velocities using different measuring techniques. It is shown that all measuring techniques can significantly be biased by intermittency. Mass balance and eddy correlation measurements are only biased when the concentration difference between the air and the water is spatially or temporally inhomogeneous over the measurement interval. Mean transfer velocities calculated either from mean boundary layer thicknesses or from thermographic techniques, which compute the mean transfer velocity either from concentration differences of from time constants, are biased toward lower values. The effects can be large and a simple stochastic bimodal model is used to estimate the effect.},
	doi = {10.1007/978-3-540-36906-6_18},
	author = {Bernd J{\"a}hne and Christopher Popp and Uwe Schimpf and Christoph S. Garbe and Bernd J{\"a}hne},
	editor = {Christoph S. Garbe and Handler, R. A.}
}
@book {hamprecht_07_pattern,
	title = {Pattern Recognition, 29th DAGM Symposium, Heidelberg, Germany, September 12-14, 2007, Proceedings},
	volume = {4713},
	year = {2007},
	publisher = {Springer},
	organization = {Springer},
	doi = {10.1007/978-3-540-74936-3},
	editor = {Fred A. Hamprecht and Bernd J{\"a}hne and Christoph Schn{\"o}rr}
}
@proceedings {hamprecht2007,
	title = {Pattern Recognition, 29th DAGM Symposium, Heidelberg, Germany, September 12-14},
	volume = {4713},
	year = {2007},
	publisher = {Springer},
	doi = {10.1007/978-3-540-74936-3},
	author = {Christoph Schn{\"o}rr and Bernd J{\"a}hne},
	editor = {Fred A. Hamprecht}
}
@conference {schmidt2007,
	title = {Range flow estimation based on photonic mixing device data},
	booktitle = {Proc.\ Dyn3D Workshop, Heidelberg, Sept. 11, 2007},
	year = {2007},
	publisher = {ZESS, Univ.\ Siegen},
	organization = {ZESS, Univ.\ Siegen},
	author = {Schmidt, Martin and Markus Jehle and Bernd J{\"a}hne}
}
@conference {andres_07_selection,
	title = {Selection of Local Optical Flow Models by Means of Residual Analysis},
	booktitle = {Pattern Recognition},
	volume = {4713},
	year = {2007},
	note = {1},
	pages = {72-81},
	publisher = {Springer},
	organization = {Springer},
	doi = {10.1007/978-3-540-74936-3_8},
	author = {Bj{\"o}rn Andres and Fred A. Hamprecht and Christoph S. Garbe},
	editor = {Christoph Schn{\"o}rr and Bernd J{\"a}hne and Fred A. Hamprecht}
}
@conference {andres2007,
	title = {Selection of local optical flow models by means of residual analysis},
	booktitle = {Proceedings of the 29th DAGM Symposium on Pattern Recognition},
	year = {2007},
	pages = {72--81},
	publisher = {Springer},
	organization = {Springer},
	abstract = {This contribution presents a novel approach to the challenging problem of model selection in motion estimation from sequences of images. New light is cast on parametric models of local optical flow. These models give rise to parameter estimation problems with highly correlated errors in variables (EIV). Regression is hence performed by equilibrated total least squares. The authors suggest to adaptively select motion models by testing local empirical regression residuals to be in accordance with the probability distribution that is theoretically predicted by the EIV model. Motion estimation with residual-based model selection is examined on artificial sequences designed to test specifically for the properties of the model selection process. These simulations indicate a good performance in the exclusion of inappropriate models and yield promising results in model complexity control.},
	doi = {10.1007/978-3-540-74936-3_8},
	author = {Bj{\"o}rn Andres and Christoph S. Garbe and Christoph Schn{\"o}rr and Bernd J{\"a}hne},
	editor = {Fred A. Hamprecht and Fred A. Hamprecht}
}
@conference {goerlitz_07_semi,
	title = {Semi-Supervised Tumor Detection in MRSI With Discriminative Random Fields},
	booktitle = {Pattern Recognition},
	volume = {4713},
	year = {2007},
	note = {1},
	pages = {224-233},
	publisher = {Springer},
	organization = {Springer},
	doi = {10.1007/978-3-540-74936-3_23},
	author = {G{\"o}rlitz, L. and Bjoern H. Menze and M.-A. Weber and B. Michael Kelm},
	editor = {Fred A. Hamprecht and Fred A. Hamprecht and Christoph Schn{\"o}rr and Bernd J{\"a}hne}
}
@conference {rapp2007,
	title = {A theoretical and experimental investigation of the systematic errors and statistical uncertainties of time-of-flight cameras},
	booktitle = {Proc.\ Dyn3D Workshop, Heidelberg, Sept. 11, 2007},
	year = {2007},
	publisher = {ZESS, Univ.\ Siegen},
	organization = {ZESS, Univ.\ Siegen},
	author = {Holger Rapp and Mario Frank and Fred A. Hamprecht and Bernd J{\"a}hne}
}
@book {garbe2007d,
	title = {Transport at the Air Sea Interface --- Measurements, Models and Parameterizations},
	year = {2007},
	publisher = {Springer},
	organization = {Springer},
	doi = {10.1007/978-3-540-36906-6},
	url = {http://hci.iwr.uni-heidelberg.de/publications/dip/2007/TASI/index.html},
	author = {Bernd J{\"a}hne},
	editor = {Christoph S. Garbe and Handler, R. A.}
}
@incollection {falkenroth2007a,
	title = {Visualisation of oxygen concentration fields in the mass boundary layer by fluorescence quenching},
	year = {2007},
	publisher = {Springer Verlag},
	abstract = {Laser-Induced Fluorescence (LIF) is applied to observe directly the mechanism of gas exchange in the aqueous viscous boundary layer at a free water surface. In order to make dissolved oxygen visible, a new class of fluorescent dyes is used with a life time in the order of microseconds so that the quenching constant for dissolved oxygen is sufficiently high for sensitive measurements. Depth profiles of the O2 concentration near the water surface are obtained by a vertical laser sheet at a rate of 185 frames per second. This technique is capable of a measurement sector up to several centimetres down from the water surface with a resolution in the order of 50-100 um. For a small circular wind/wave facility a correlation between wind speed and gas-exchange rates calculated from the extrapolated mean boundary-layer thickness are presented as well as the results of parallel measurements with a budget method for other gases with known Schmidt numbers.},
	doi = {10.1007/978-3-540-36906-6_4},
	author = {A. Falkenroth and Kai Degreif and Bernd J{\"a}hne and Bernd J{\"a}hne},
	editor = {Christoph S. Garbe and Handler, R. A.}
}
@conference {schimpf2006,
	title = {Active thermography: a local and fast method to investigate heat and gas exchange between ocean and atmosphere},
	booktitle = {Verhandlungen der Deutschen Physikalischen Gesellschaft, Spring Conference, Heidelberg, 15.-17.03.2006},
	year = {2006},
	publisher = {Deutsche Physikalische Gesellschaft},
	organization = {Deutsche Physikalische Gesellschaft},
	url = {http://www.dpg-verhandlungen.de/2006/heidelberg/up.html},
	author = {Uwe Schimpf and Christopher Popp and Bernd J{\"a}hne}
}
@conference {jehle2006c,
	title = {Direct estimation of the wall shear rate using parametric motion models in 3D},
	booktitle = {Proceedings of the 28th DAGM Symposium on Pattern Recognition},
	volume = {4174},
	year = {2006},
	pages = {434--443},
	abstract = {We present a new optical-flow-based technique to estimate the wall shear rate using a special illumination technique that makes the brightness of particles dependent on the distance from the wall. The wall shear rate is derived directly (that means, without previous calculation of the velocity vector field) from two of the components of the velocity gradient tensor which in turn describes the kinematics of fluid flows up to the first order. By incorporating this into a total least squares framework, we can apply a further extension of the structure tensor technique. Results obtained both from synthetical and real data are shown, and reveal a substantial improvement compared to conventional techniques.},
	issn = {0302-9743},
	doi = {10.1007/11861898_44},
	author = {Markus Jehle and Bernd J{\"a}hne and U. Kertzscher}
}
@conference {jehle2006a,
	title = {Eine neuartige Methode zur raumzeitlichen Analyse von Str{\"o}mungen in Grenzschichten},
	booktitle = {Verhandlungen der Deutschen Physikalischen Gesellschaft, Spring Conference, Heidelberg, 15.-17.03.2006},
	year = {2006},
	publisher = {Deutsche Physikalische Gesellschaft},
	organization = {Deutsche Physikalische Gesellschaft},
	url = {http://www.dpg-verhandlungen.de/2006/heidelberg/up.html},
	author = {Markus Jehle and Bernd J{\"a}hne}
}
@conference {degreif2006a,
	title = {Gas exchange measurements: the chemically enhanced gas transfer of carbon dioxide at the water surface},
	booktitle = {Verhandlungen der Deutschen Physikalischen Gesellschaft, Spring Conference, Heidelberg, 15.-17.03.2006},
	year = {2006},
	publisher = {Deutsche Physikalische Gesellschaft},
	organization = {Deutsche Physikalische Gesellschaft},
	url = {http://www.dpg-verhandlungen.de/2006/heidelberg/up.html},
	author = {Kai Degreif and Joachim Kuss and Bernd J{\"a}hne}
}
@conference {degreif2006b,
	title = {Gas exchange measurements: transition of the boundary conditions from a flat to a rough water surface},
	booktitle = {Verhandlungen der Deutschen Physikalischen Gesellschaft, Spring Conference, Heidelberg, 15.-17.03.2006},
	year = {2006},
	publisher = {Deutsche Physikalische Gesellschaft},
	organization = {Deutsche Physikalische Gesellschaft},
	url = {http://www.dpg-verhandlungen.de/2006/heidelberg/up.html},
	author = {Kai Degreif and Bernd J{\"a}hne}
}
@conference {falkenroth2006a,
	title = {Imaging concentration profiles of water boundary layer by Double-Dye LIF and inverse modelling},
	booktitle = {Verhandlungen der Deutschen Physikalischen Gesellschaft, Spring Conference, Heidelberg, 15.-17.03.2006},
	year = {2006},
	publisher = {Deutsche Physikalische Gesellschaft},
	organization = {Deutsche Physikalische Gesellschaft},
	url = {http://www.dpg-verhandlungen.de/2006/heidelberg/up.html},
	author = {A. Falkenroth and Bernd J{\"a}hne}
}
@conference {rocholz2006,
	title = {Imaging System for combined slope/height measurements of short wind waves : ISHG},
	booktitle = {Verhandlungen der Deutschen Physikalischen Gesellschaft, Spring Conference, Heidelberg, 15.-17.03.2006},
	year = {2006},
	publisher = {Deutsche Physikalische Gesellschaft},
	organization = {Deutsche Physikalische Gesellschaft},
	url = {http://www.dpg-verhandlungen.de/2006/heidelberg/up.html},
	author = {Roland Rocholz and Bernd J{\"a}hne}
}
@incollection {schimpf2006a,
	title = {Infrared imaging: a novel tool to investigate the influence of surface slicks on air-sea gas transfer},
	year = {2006},
	pages = {239--252},
	publisher = {Springer},
	abstract = {The influence of surface films on air-sea gas exchange at low and moderate wind speeds is investigated. Observations were made in the small Heidelberg circular wind-wave facility and in coastal and offshore waters south of Cape Cod, New England. The passive controlled flux technique was used to investigate the micro turbulence very near the water surface, which controls the rate of transfer of momentum, heat, and mass across the air-sea interface. The analysis of infrared image sequences allows the estimation of the net heat flux at the water surface, the skin-bulk temperature difference across the thermal sublayer and thus the heat transfer velocity. Using Schmidt number scaling, estimates of the gas transfer velocity are obtained. Experimental evidence shows that increased surface film concentrations suppress near surface turbulence and thus decrease the gas exchange compared to a slick-free ocean interface. If a surfactant is present, turbulent mixing is dampened and direct renewal of the surface is inhibited. A surface slick changes the hydrodynamic boundary conditions in that the length scales of near surface turbulence controlling air sea gas exchange are modified. The micro-scale temperature fluctuations at the water surface indicate that at low wind speeds the transport process is dominated by large-scale turbulence, whereas at higher wind speeds the smallest observed scales dominate the transport.},
	doi = {10.1007/3-540-33271-5_21},
	author = {Uwe Schimpf and Nelson M. Frew and Bernd J{\"a}hne and Heinrich H{\"u}hnerfuss},
	editor = {Martin Gade and Gerald M. Korenowski}
}
@conference {withopf2006,
	title = {Learning algorithm for real-time vehicle tracking},
	booktitle = {Proc. IEEE Intelligent Transportation Systems Conference ITSC {\textquoteright}06},
	year = {2006},
	pages = {516--521},
	abstract = {This article presents a learning algorithm for real-time object tracking in video sequences which uses an improvement of a feature selection method known from object detection. But in contrast to trackers based on object detection methods, our approach explicitly selects the features which are best suited to track an object, which are different from the best features for object detection. The used features are constructed from pairs of image patches and related to Haar features. Besides the automatic selection of features according to their discriminative (tracking) power, the advantage of this approach is that the resulting tracker is very fast, allowing it to run in addition to a detector to robustify the object position estimation and to compensate for dropouts of the detector. A comparison of the proposed tracking algorithm with other tracking methods is presented which shows the accuracy of the proposed algorithm},
	doi = {10.1109/ITSC.2006.1706793},
	author = {Daniel Withopf and Bernd J{\"a}hne}
}
@conference {jehle2006b,
	title = {A novel method for spatio-temporal analysis of flows within the water-side viscous boundary layer},
	booktitle = {12th Intern. Symp. on Flow Visualization, G{\"o}ttingen, 10--14. September 2006},
	year = {2006},
	doi = {10.5281/zenodo.14845},
	author = {Markus Jehle and Bernd J{\"a}hne}
}
@conference {garbe2006b,
	title = {An optical flow based technique for the non-invasive measurement of microfluidic flows},
	booktitle = {12th Intern. Symp. on Flow Visualization, G{\"o}ttingen, 10--14. September 2006},
	year = {2006},
	doi = {10.5281/zenodo.14846},
	author = {Christoph S. Garbe and Karsten Roetmann and Bernd J{\"a}hne}
}
@conference {rosenbaum2006a,
	title = {Thermographical measurement of temperatures on metallic surfaces},
	booktitle = {Sensor+Test 2006 Proceedings (OPTO 2006, IRS2 2006), N{\"u}rnberg, 30 May - 1 June 2006, AMA Fachverband f{\"u}r Sensorik},
	year = {2006},
	pages = {327--330},
	author = {Rosenbaum, T. and Bernd J{\"a}hne and Gerlach, G.}
}
@conference {falkenroth2006,
	title = {Visualization of air-water gas exchange using novel fluorescent dyes},
	booktitle = {12th Intern. Symp. on Flow Visualization, G{\"o}ttingen, 10--14. September 2006},
	year = {2006},
	doi = {10.5281/zenodo.14844},
	author = {A. Falkenroth and Alexandra G. Herzog and Bernd J{\"a}hne}
}
@conference {jaehne2005,
	title = {Air-Sea Gas Transfer; Schmidt Number dependency and intermittency},
	booktitle = {Presented at: International Liege Colloquium on Ocean Dynamics, Gas Transfer at Water Surfaces},
	year = {2005},
	author = {Bernd J{\"a}hne and Nielsen, R. and Christopher Popp and Uwe Schimpf and Christoph S. Garbe}
}
@article {jaehne2005a,
	title = {Combined optical slope/height measurements of short wind waves: principles and calibration},
	journal = {Meas. Sci. Technol.},
	volume = {16},
	number = {10},
	year = {2005},
	pages = {1937--1944},
	abstract = {A novel short wave imaging technique is described. For the first time, it is capable of measuring the wave height and wave slope simultaneously with unprecedented accuracy. A telecentric optical system is used to image the waves so that the image magnification does not change with the wave height and the slope calibration is much less dependent on the position of the image. A telecentric illumination system contains an area-extended LED light source that is placed in the focal plane of a second lens below the water channel. In this way, the wave slope can be coded by the position-dependent intensity of the light source. LEDs with two different wavelengths in the red and near infrared part of the spectrum are used. Because the water column absorbs the two wavelengths differently, the difference in the observed intensities gives the wave height. The paper details the principle of the technique and the calibration procedures.},
	issn = {0957-0233},
	doi = {10.1088/0957-0233/16/10/008},
	author = {Bernd J{\"a}hne and Schmidt, M. and Roland Rocholz}
}
@book {jaehne2005e,
	title = {Digital Image Processing},
	year = {2005},
	publisher = {Springer},
	organization = {Springer},
	edition = {6},
	doi = {10.1007/3-540-27563-0},
	author = {Bernd J{\"a}hne}
}
@book {jaehne2005b,
	title = {Digitale Bildverarbeitung},
	year = {2005},
	publisher = {Springer},
	organization = {Springer},
	edition = {6},
	doi = {10.1007/b138991},
	author = {Bernd J{\"a}hne}
}
@conference {jaehne2005f,
	title = {The Heidelberg Aeolotron: new perspectives for laboratory investigations of small-scale air-sea interaction},
	booktitle = {Poster presented at: International Liege Colloquium on Ocean Dynamics, Gas Transfer at Water Surfaces},
	year = {2005},
	doi = {10.5281/zenodo.15417},
	author = {Bernd J{\"a}hne and Uwe Schimpf and Christoph S. Garbe and Kai Degreif}
}
@incollection {banerjee2005,
	title = {High resolution optical measurement techniques in paper drying},
	volume = {4},
	year = {2005},
	pages = {16--22},
	author = {D. Banerjee and S. Schabel and Christoph S. Garbe and Uwe Schimpf and Bernd J{\"a}hne and Spiegel, W. von}
}
@inbook {schimpf2005,
	title = {Infrared imaging: a novel tool to investigate the influence of surface slicks on air-sea gas transfer},
	year = {2005},
	pages = {239-252},
	publisher = {Springer},
	organization = {Springer},
	chapter = {3},
	doi = {10.1007/3-540-33271-5_21},
	author = {Uwe Schimpf and Nelson M. Frew and Bernd J{\"a}hne and Heinrich H{\"u}hnerfuss},
	editor = {Martin Gade and Gerald M. Korenowski}
}
@article {wenig2005,
	title = {Operator representation as a new differential optical absorption spectroscopy formalism},
	journal = {Appl. Optics},
	volume = {44},
	year = {2005},
	pages = {3246-3253},
	abstract = {UV-visible absorption spectroscopy with extraterrestrial light sources is a widely used technique for the measurement of stratospheric and tropospheric trace gases. We focus on differential optical absorption spectroscopy (DOAS) and present an operator notation as a new formalism to describe the different processes in the atmosphere and the simplifying assumptions that compose the advantage of DOAS. This formalism provides tools to classify and reduce possible error sources of DOAS applications.},
	doi = {10.1364/AO.44.003246},
	author = {Mark Wenig and Bernd J{\"a}hne and Ulrich Platt}
}
@article {frew2004,
	title = {Air-sea gas transfer: Its dependence on wind stress, small-scale roughness, and surface films},
	journal = {J. Geophys. Res.},
	volume = {109},
	year = {2004},
	pages = {C08S17},
	doi = {10.1029/2003JC002131},
	author = {Nelson M. Frew and E. J. Bock and Uwe Schimpf and T. Hara and Horst Hau{\ss}ecker and J. B. Edson and W. R. McGilles and R. K. Nelson and S. P. McKenna and B. M. Uz and Bernd J{\"a}hne}
}
@conference {klar2004a,
	title = {Analysis of subsurface gravel layer flow caused by turbulent open-channel flow using 3D PTV and pressure sensor techniques},
	booktitle = {BAW-Workshop Soil and Bed Stability - Interaction Effects between Geotechnics and Hydraulic Engineering},
	year = {2004},
	author = {Michael Klar and Markus Jehle and Bernd J{\"a}hne and Detert, M. and Jirka G. H.}
}
@incollection {hamprecht_04_classification,
	title = {Classification},
	year = {2004},
	pages = {509-519},
	publisher = {CRC Press},
	edition = {2nd},
	author = {Fred A. Hamprecht},
	editor = {Bernd J{\"a}hne}
}
@conference {garbe2004,
	title = {Estimation of motion and parameters of heat transport from thermography},
	booktitle = {Quantitative Infrared Thermography},
	year = {2004},
	author = {Christoph S. Garbe and Bernd J{\"a}hne}
}
@conference {jaehne2004e,
	title = {Exchange processes at the ocean surface: their role in coupling atmosphere and ocean, a contribution to the SOLAS project},
	booktitle = {Verhandlungen der Deutschen Physikalischen Gesellschaft, Spring Conference, Munich, 22.-26.03.2004},
	year = {2004},
	publisher = {Deutsche Physikalische Gesellschaft},
	organization = {Deutsche Physikalische Gesellschaft},
	abstract = {Der Stoffaustausch zwischen Atmosph{\"a}re und Ozean ist trotz seiner Bedeutung f{\"u}r die globalen Stoffkreisl{\"a}ufe immer noch wenig verstanden und experimentell schwer zug{\"a}nglich. In den letzten Jahre wurde eine neue Technik entwickelt, die es mittels aktiver Thermographie erlaubt, die Antwortfunktion des Transports durch die wasserseitige viskose Grenzschicht sowohl im Labor als auch im Feld zu messen. Damit ist es nicht nur m{\"o}glich, innerhalb weniger Minuten die Transfergeschwindigkeit f{\"u}r Gase zu messen, sondern auch verschiedene Modelle zu unterscheiden und die Schmidtzahlabh{\"a}ngigkeit zu bestimmen. Dies bedeutet f{\"u}r zuk{\"u}nftige Messungen im Feld, dass Messungen der Konzentrationen von beliebigen Tracern im Wasser und der Atmosph{\"a}re ausreichend sind, um Flussraten relevanter Tracer zwischen Atmosph{\"a}re und Ozean zu bestimmen. Es sind keine aufwendigen und unsicheren direkten Flussraten (z.B. durch Eddykorrelations- oder -akkumulationsmessungen) mehr notwendig. Die neue Technik soll ein wesentliches Bindeglied zwischen den atmosph{\"a}rischen und ozeanographischen Untersuchungen des internationalen SOLAS-Projekt werden.},
	url = {http://old.dpg-tagungen.de/archive/2004/up_1.html},
	author = {Bernd J{\"a}hne and Uwe Schimpf and Christopher Popp and Christoph S. Garbe}
}
@conference {degreif2004,
	title = {Gas exchange experiments using time resolved UV-spectroscopy},
	booktitle = {Verhandlungen der Deutschen Physikalischen Gesellschaft, Spring Conference, Munich, 22.-26.03.2004},
	year = {2004},
	publisher = {Deutsche Physikalische Gesellschaft},
	organization = {Deutsche Physikalische Gesellschaft},
	abstract = {The air sea gas exchange plays a key role in the development of the earth{\textquoteright}s climate. The oceans can act as a source or sink for climate relevant gases such as carbon dioxide, methane or dimethyl sulphide. Hydrodynamics in the viscous boundary layer at the free ocean surface and therefore the gas transfer across the interface are not well understood yet. UV-spectroscopy provides a direct and fast measuring method for gaseous or volatile tracers in the air and water phase. A wide range of hydrodynamic parameters, i.e. Schmidt numbers and solubilities is feasible with volatile hydrocarbons such as benzene or fluorobenzene. Multiple tracers may be observed simultaneously with the same non-invasive measuring technique. Laboratory experiments are performed at a 120 cm diameter circular wind-wave-facility in Heidelberg. A detailed study of gas transfer rate{\textquoteright}s dependence on the mean squared surface wave slope s^2, friction velocity u*, as well as on the Schmidt number Sc and solubility of the tracers will be performed. Also the influence of surface films or an increased viscosity is going to be examined. Preliminary results and further prospects are presented.},
	url = {http://www.dpg-verhandlungen.de/2004/up_15.html},
	author = {Kai Degreif and Bernd J{\"a}hne}
}
@article {schimpf2004,
	title = {Investigation of transport processes across the sea surface microlayer by infrared imagery},
	journal = {J. Geophys. Res.},
	volume = {109},
	number = {C8},
	year = {2004},
	pages = {C08S13},
	abstract = {Heat is used as a proxy tracer for gases to study the transport processes across the sea surface microlayer. Infrared imaging techniques permit fast measurements of heat transfer velocities and give an insight into the transport mechanisms across the thermal sublayer. The observed fluctuations of the sea surface temperature suggest that surface renewal is the major turbulent transport mechanism at medium and high wind speeds. The scale space analysis of the temperature patterns at the sea surface with respect to their contribution to the skin-bulk temperature difference shows the turbulent nature of the transport process. Large-scale turbulence dominates the transport at low friction velocities, whereas small-scale turbulence is more dominant at higher wind friction. The skin-bulk temperature difference is estimated by fitting the measured sea surface temperature distribution with a PDF function based on a surface renewal model. Periodic heat flux switching in the wind-wave flume delivers independent estimates of surface and bulk temperature and verifies the statistical approach, whereas at very low wind speeds and film-covered surfaces the statistical method underestimates the skin-bulk temperature difference across the thermal sublayer. The large scatter of the transfer velocities when plotted versus wind speed indicates that not only the wind shear but also other processes such as the wave field and surfactants influences near-surface turbulence and thus air-water gas transfer.},
	issn = {0148-0227},
	doi = {10.1029/2003JC001803},
	author = {Uwe Schimpf and Christoph S. Garbe and Bernd J{\"a}hne}
}
@book {jaehne2004,
	title = {Practical Handbook on Image Processing for Scientific and Technical Applications},
	year = {2004},
	publisher = {CRC Press},
	organization = {CRC Press},
	edition = {2},
	abstract = {Image processing is fast becoming a valuable tool for analyzing multidimensional data in all areas of natural science. Since the publication of the best-selling first edition of this handbook, the field of image processing has matured in many of its aspects from ad hoc, empirical approaches to a sound science based on established mathematical and physical principles. The Practical Handbook on Image Processing for Scientific and Technical Applications, Second Edition builds a sound basic knowledge of image processing, provides a critically evaluated collection of the best algorithms, and demonstrates those algorithms with real-world applications from many fields. It covers all aspects of image processing, from image formation to image analysis, and gives an up-to-date review of advanced concepts. Organized according to the hierarchy of tasks, each chapter includes a summary, an outline of the background the task requires, and a section of practical tips that help you avoid common errors and save valuable research time.},
	doi = {10.1201/9780849390302},
	author = {Bernd J{\"a}hne}
}
@conference {detert2004,
	title = {Pressure fluctuations within subsurface gravel bed caused by turbulent open-channel flow},
	booktitle = {Proc. of River Flow 2004},
	year = {2004},
	pages = {695-701},
	publisher = {A. A. Balkema Publishers},
	organization = {A. A. Balkema Publishers},
	author = {Detert, M. and G. H. Jirka and Markus Jehle and Michael Klar and Bernd J{\"a}hne and H.-J. K{\"o}hler and Wenka, T.}
}
@article {wenig2004,
	title = {Retrieval and analysis of stratospheric NO$_2$ from the Global Ozone Monitoring Experiment},
	journal = {J. Geophys. Res.},
	volume = {109},
	number = {D4},
	year = {2004},
	pages = {D04315, 1--11},
	abstract = {We describe the retrieval of stratospheric NO2 vertical column densities from the Global Ozone Monitoring Experiment (GOME) aboard the ERS-2 satellite. Different differential optical absorption spectroscopy (DOAS) evaluations are compared in order to investigate uncertainties caused by the diffuser plate. An improved version of our algorithm to separate the tropospheric and stratospheric fraction of NO2 from GOME satellite data is described and is used to extract a long term data set of stratospheric NO2 (1996-2000). In addition, the average seasonal variation in the global distribution is determined, which allows us to monitor and investigate specific aspects of stratospheric chemistry, in particular the interhemispheric comparison of stratospheric NO2. In contrast to other satellite observations (e.g., SAGE II, OSIRIS), GOME observations of stratospheric NO2 include the lower stratosphere. In general, our observations are in agreement with previous measurements and confirm the current knowledge of stratospheric nitrogen chemistry.},
	issn = {0148-0227},
	doi = {10.1029/2003JD003652},
	author = {Mark Wenig and Kuhl, S. and S. Beirle and Bucsela, E. and Bernd J{\"a}hne and Ulrich Platt and Gleason, J. and T. Wagner}
}
@conference {klar2004c,
	title = {Simultaneous 3D PTV and micro-pressure sensor equipment for flow analysis in subsurface gravel layer},
	booktitle = {Proc. of River Flow 2004},
	year = {2004},
	pages = {703--712},
	publisher = {A. A. Balkema Publishers},
	organization = {A. A. Balkema Publishers},
	author = {Michael Klar and Markus Jehle and Detert, M. and G. H. Jirka and Bernd J{\"a}hne and H.-J. K{\"o}hler and Wenka, T.}
}
@article {garbe2004a,
	title = {A surface renewal model to analyze infrared image sequences of the ocean surface for the study of air-sea heat and gas exchange},
	journal = {J. Geophys. Res.},
	volume = {109},
	number = {C8},
	year = {2004},
	pages = {1-18},
	abstract = {Thermographic techniques are presented that directly measure the temperature difference across the thermal boundary layer at the sea surface, the probability density function of surface renewal, the net heat flux, and the heat transfer velocity during nighttime. The techniques are based on a model of surface renewal. Through the use of digital image processing techniques, temporally and spatially highly resolved measurements are feasible, limited only by the thermal imager. We present laboratory measurements from the Heidelberg Aeolotron and field measurements from the GasExII cruise taken at a spatial resolution of 3 mm and temporal resolution of 10 ms. The net heat flux estimates of the thermographic techniques and micrometeorological methods agree with an error less than 5\% for conditions in which the surface renewal model is applicable. Experimental evidence is presented for the probability density function of surface renewal to be best described by a logarithmic normal distribution. At moderate and high wind speeds when the influence of surface films is not significant, surface renewal seems to be an adequate model for air-water heat exchange.},
	issn = {0148-0227},
	doi = {10.1029/2003JC001802},
	author = {Christoph S. Garbe and Uwe Schimpf and Bernd J{\"a}hne}
}
@conference {jaehne2004b,
	title = {Vergeichende Analyse moderner Bildsensoren f{\"u}r die optische Messtechnik},
	booktitle = {Sensoren und Messsysteme 2004},
	volume = {1829},
	year = {2004},
	pages = {317--324},
	doi = {10.5281/zenodo.14560},
	author = {Bernd J{\"a}hne}
}
@article {hamprecht_04_bild,
	title = {Vom Bild zur Information},
	journal = {Ruperto Carola -- Forschungsmagazin der Universit{\"a}t Heidelberg},
	volume = {03.2004},
	number = {0051},
	year = {2004},
	pages = {9-12},
	doi = {http://www.uni-heidelberg.de/presse/ruca/ruca04-03/s09bild.html},
	author = {Fred A. Hamprecht and Bernd J{\"a}hne}
}
@booklet {hamprecht2004,
	title = {Vom Bild zur Information},
	year = {2004},
	author = {Fred A. Hamprecht and Bernd J{\"a}hne}
}
@article {garbe2003c,
	title = {Estimation of complex motion from thermographic image sequences},
	journal = {SPIE Proc.},
	volume = {5073},
	year = {2003},
	pages = {303--317},
	abstract = {In this contribution a novel technique for computing complexmotion involving heat transport processes will be presented. Theproposed technique is a local gradient based approach, combiningtransport models with motion analysis. It allows for thesimultaneous estimation of both motion and parameter of anunderlying transport model. Since the analysis is based on thermalimage sequences, estimates are computed to a high temporal andspatial resolution, limited only by the resolution and frame rateof the employed IR camera. This novel technique was utilized onexchange processes at the atmosphere/ocean boundary, wheresignificant parameters of heat transfer could be measured and atransport model verified. Using the presented algorithms, surfaceflows as well as convergences and divergences on air-waterinterfaces can be measured accurately. Apart from applications inoceanography and botany, relevant benefits of the proposedtechnique to NDT will be presented. It is possible to compensatefor motion to reach accuracies much better than 1/10th of a pixel.Through the direct estimation of locally resolved diffusivities inmaterials, insights can be gained about defects present. Byestimating not only isotropic diffusion but also the whole matrixof anisotropic diffusion, the technique is highly relevant tomeasurements of composite materials.},
	doi = {10.1117/12.501121},
	author = {Christoph S. Garbe and Hagen Spies and Bernd J{\"a}hne}
}
@article {garbe2003b,
	title = {Estimation of surface flow and net heat flux from infrared image sequences},
	journal = {Journal of Mathematical Imaging and Vision},
	volume = {19},
	number = {3},
	year = {2003},
	pages = {159--174},
	abstract = {The study of dynamical processes at the sea surface interface using infrared image sequence analysis has gained tremendous popularity in recent years. Heat is transferred by similar transport mechanisms as gases relevant to global climatic changes. These similarities lead to the use of infrared cameras to remotely visualize and quantitatively estimate parameters of the underlying processes. Relevant parameters that provide important evidence about the models of air-sea gas transfer are the temperature difference across the thermal sub layer, the probability density function of surface renewal and the flow field at the surface. Being a driving force in air sea interactions, it is of equal importance to measure heat fluxes. In this paper we will present algorithms to measure the above parameters of air-sea gas transfer during night-time and show how to combine physical modeling and quantitative digital image processing algorithms to identify transport models. The image processing routines rely on an extension of optical flow computations to incorporate brightness changes in a total least squares (TLS) framework. Statistical methods are employed to support a model of gas transfer and estimate its parameters. Measurements in a laboratory environment were conducted and results verified with ground truth data gained from traditional measurement techniques.},
	doi = {10.1023/A:1026233919766},
	author = {Christoph S. Garbe and Hagen Spies and Bernd J{\"a}hne}
}
@conference {jaehne2003a,
	title = {Image sequence analysis in environmental and live sciences},
	booktitle = {Proceedings of the 25th DAGM Symposium on Pattern Recognition},
	volume = {2781},
	year = {2003},
	note = {invited},
	pages = {608--617},
	publisher = {Springer},
	organization = {Springer},
	abstract = {Image sequence processing techniques are essential to study dynamical processes such as exchange, growth, and transport processes. In this survey paper, a generalized framework for the estimation of the parameters of dynamic processes including motion fields is presented. Some examples from environmental and live sciences illustrate how this framework helped to tackles some key questions that could not be solved without taking and analyzing image sequences.},
	doi = {10.1007/978-3-540-45243-0_77},
	author = {Bernd J{\"a}hne},
	editor = {B. Michaelis and G. Krell}
}
@article {wenig2003,
	title = {Intercontinental transport of nitrogen oxide pollution plumes},
	journal = {Atmos. Chem. Phys.},
	volume = {3},
	year = {2003},
	pages = {387--393},
	doi = {10.5194/acp-3-387-2003},
	author = {Mark Wenig and N. Spichtinger and A. Stohl and G. Held and S. Beirle and T. Wagner and Bernd J{\"a}hne and Ulrich Platt}
}
@article {stoehr2003a,
	title = {Measurement of 3D pore-scale flow in index-matched porous media},
	journal = {Exp. Fluids},
	volume = {35},
	number = {2},
	year = {2003},
	pages = {159--166},
	abstract = {We present the experimental analysis of fluid flow at the pore-scale of a transparent porous medium with matched refractive indices of the solid and liquid phases. The planar laser-induced fluorescence (PLIF) technique described is the first to simultaneously visualize the 3D pore-scale flow of two immiscible liquid phases in porous media. Through the application of a highly precise index matching method and the employment of up-to-date CCD imaging hardware, the system features a high spatial resolution and sampling rate. The method was used to study the dispersion of a tracer dye in single-phase flow and the displacement of oil by water in an imbibition process.},
	issn = {0723-4864},
	doi = {10.1007/s00348-003-0641-x},
	author = {M. St{\"o}hr and Roth, K. and Bernd J{\"a}hne}
}
@conference {schimpf2003a,
	title = {Observational studies of parameters influencing air--sea gas exchange},
	booktitle = {Geophysical Research Abstracts},
	volume = {5},
	year = {2003},
	pages = {09328},
	author = {Uwe Schimpf and Nelson M. Frew and Kalkenings, R. and Christoph S. Garbe and Bernd J{\"a}hne}
}
@article {uttenweiler2003a,
	title = {Spatiotemporal anisotropic diffusion filtering to improve signal-to-noise ratios and object restoration in fluorescence microscopic image sequences.},
	journal = {J Biomed Opt},
	volume = {8},
	number = {1},
	year = {2003},
	pages = {40--47},
	publisher = {Ruprecht-Karls-Universit{\"a}t Heidelberg, Institut f{\"u}r Physiologie und Pathophysiologie Medical Biophysics, Im Neuenheimer Feld 326, 69120 Heidelberg, Germany. dietmar.uttenweiler@urz.uni-heidelberg.de},
	abstract = {We present an approach for significantly improving the quantitative analysis of motion in noisy fluorescence microscopic image sequences. The new partial differential equation based method is a general extension of a 2-D nonlinear anisotropic diffusion filtering scheme to a specially adapted 3D nonlinear anisotropic diffusion filtering scheme, with two spatial image dimensions and the time t in the image sequence as the third dimension. Motion in image sequences is considered as oriented, line-like structures in the spatiotemporal x,y,t domain, which are determined by the structure tensor method. Image enhancement is achieved by a structure adopted smoothing kernel in three dimensions, thereby using the full 3D information inherent in spatiotemporal image sequences. As an example for low signal-to-noise ratio (SNR) microscopic image sequences we have applied this method to noisy in vitro motility assay data, where fluorescently labeled actin filaments move over a surface of immobilized myosin. With the 3D anisotropic diffusion filtering the SNR is significantly improved (by a factor of 3.8) and closed object structures are reliably restored, which were originally degraded by noise. Generally, this approach is very valuable for all applications where motion has to be measured quantitatively in low light level fluorescence microscopic image sequences of cellular, subcellular, and molecular processes.},
	doi = {10.1117/1.1527627},
	url = {http://dx.doi.org/10.1117/1.1527627},
	author = {D. Uttenweiler and C. Weber and Bernd J{\"a}hne and Rainer H. A. Fink and Schaar, H.}
}
@conference {garbe2003a,
	title = {A surface renewal model to analyze infrared image sequences for the study of air-sea heat and gas exchange},
	booktitle = {Geophysical Research Abstracts},
	year = {2003},
	pages = {11893},
	author = {Christoph S. Garbe and Uwe Schimpf and Bernd J{\"a}hne}
}
@conference {jaehne2003b,
	title = {Towards objective performance analysis for estimation of complex motion: analytic motion modeling, filter optimization, and test sequences},
	booktitle = {In Proceedings of IEEE International Conference on Image Processing},
	year = {2003},
	doi = {10.1109/ICIP.2003.1247184},
	url = {./pdf/2003/barth_ICIP2003.pdf:PDF},
	author = {Bernd J{\"a}hne and Christoph S. Garbe}
}
@incollection {spies2002f,
	title = {3D-Blattbewegung und Wachstum},
	year = {2002},
	pages = {267--270},
	publisher = {Wichmann},
	url = {http://d-nb.info/96618503X},
	author = {Hagen Spies and Bernd J{\"a}hne},
	editor = {Thomas Luhmann}
}
@incollection {klar2002,
	title = {3D-Str{\"o}mungsmessung in Kiesporen},
	year = {2002},
	pages = {247--250},
	publisher = {Wichmann},
	url = {http://d-nb.info/96618503X},
	author = {Michael Klar and P. Stybalkowski and Hagen Spies and Bernd J{\"a}hne},
	editor = {Thomas Luhmann}
}
@book {jaehne2002,
	title = {Digital Image Processing},
	year = {2002},
	publisher = {Springer},
	organization = {Springer},
	edition = {5th},
	doi = {10.1007/978-3-662-04781-1},
	url = {http://d-nb.info/963597833},
	author = {Bernd J{\"a}hne}
}
@book {jaehne2002a,
	title = {Digitale Bildverarbeitung},
	year = {2002},
	publisher = {Springer Verlag},
	organization = {Springer Verlag},
	edition = {F{\"u}nfte},
	doi = {10.1007/978-3-662-06731-4},
	url = {http://d-nb.info/963601830},
	author = {Bernd J{\"a}hne}
}
@article {jaehne_02_anspruchsvolle,
	title = {F{\"u}r Anspruchsvolle - Multidimensionale Bildverarbeitung in der Produktion},
	journal = {Qualit{\"a}t und Zuverl{\"a}ssigkeit},
	volume = {47},
	year = {2002},
	pages = {1154-1159},
	author = {Bernd J{\"a}hne and Martin Brocke and H. Eisele and S. Hader and Fred A. Hamprecht and W. Happold and Florian Raisch and J. Restle}
}
@article {wenig2002,
	title = {Intercontinental transport of nitrogen oxide pollution plumes},
	journal = {acpd},
	volume = {3},
	year = {2002},
	pages = {2151--2165},
	doi = {10.5194/acpd-2-2151-2002},
	author = {Mark Wenig and N. Spichtinger and A. Stohl and G. Held and S. Beirle and T. Wagner and Bernd J{\"a}hne and Ulrich Platt}
}
@conference {schimpf2002a,
	title = {On the investigations of statistical properties of the micro turbulence at the ocean surface},
	booktitle = {Gas Transfer at Water Surfaces},
	volume = {127},
	year = {2002},
	pages = {51--57},
	publisher = {American Geophysical Union},
	organization = {American Geophysical Union},
	doi = {10.1029/GM127p0051},
	author = {Uwe Schimpf and Bernd J{\"a}hne and Horst Hau{\ss}ecker},
	editor = {E. S. Saltzman and M. A. Donelan and R. Wanninkhof and W. M. Drennan}
}
@conference {garbe2002b,
	title = {Measuring important parameters for air-sea heat exchange},
	booktitle = {ThermoSense},
	volume = {4710},
	year = {2002},
	pages = {171--182},
	publisher = {SPIE},
	organization = {SPIE},
	doi = {10.1117/12.459564},
	author = {Christoph S. Garbe and Uwe Schimpf and Bernd J{\"a}hne},
	editor = {Maldague, X. P. and Rozlosnik, A. E.}
}
@conference {garbe2002a,
	title = {Measuring the sea surface heat flux and probability distribution of surface renewal events},
	booktitle = {Gas Transfer at Water Surfaces},
	volume = {127},
	year = {2002},
	pages = {109-114},
	publisher = {American Geophysical Union},
	organization = {American Geophysical Union},
	doi = {10.1029/GM127p0109},
	author = {Christoph S. Garbe and Horst Hau{\ss}ecker and Bernd J{\"a}hne},
	editor = {E. S. Saltzman and M. A. Donelan and R. Wanninkhof and W. M. Drennan}
}
@conference {klar2002a,
	title = {A miniaturized 3-D particle-tracking velocimetry system to measure the pore flow within a gravel layer},
	booktitle = {Proc. 11th Int. Symp. Applications of Laser Techniques to Fluid Mechanics},
	year = {2002},
	pages = {2.3},
	url = {http://in3.dem.ist.utl.pt/lxlaser2002/papers.asp},
	author = {Michael Klar and P. Stybalkowski and Hagen Spies and Bernd J{\"a}hne}
}
@conference {garbe2002e,
	title = {Mixed OLS-TLS for the estimation of dynamic processes with a linear source term},
	booktitle = {Proceedings of the 24th DAGM Symposium on Pattern Recognition},
	volume = {2449},
	year = {2002},
	pages = {463--471},
	publisher = {Springer-Verlag},
	organization = {Springer-Verlag},
	abstract = {We present a novel technique to eliminate strong biases in parameter estimation were part of the data matrix is not corrupted by errors. Problems of this type occur in the simultaneous estimation of optical flow and the parameter of linear brightness change as well as in range flow estimation. For attaining highly accurate optical flow estimations under real world situations as required by a number of scientific applications, the standard brightness change constraint equation is violated. Very often the brightness change has to be modelled by a linear source term. In this problem as well as in range flow estimation, part of the data term consists of an exactly known constant. Total least squares (TLS) assumes the error in the data terms to be identically distributed, thus leading to strong biases in the equations at hand. The approach presented in this paper is based on a mixture of ordinary least squares (OLS) and total least squares, thus resolving the bias encountered in TLS alone. Apart from a thorough performance analysis of the novel estimator, a number of applications are presented.},
	doi = {10.1007/3-540-45783-6_56},
	author = {Christoph S. Garbe and Hagen Spies and Bernd J{\"a}hne},
	editor = {Luc Van Gool}
}
@article {jaehne2002g,
	title = {Multidimensionale Bildverarbeitung in der Produktion},
	journal = {QZ},
	volume = {47},
	year = {2002},
	pages = {1154--1159},
	url = {http://www.qz-online.de/qz-zeitschrift/archiv/artikel/multidimensionale-bildverarbeitung-in-der-produktion-fuer-anspruchsvolle-338129.html},
	author = {Bernd J{\"a}hne and Martin Brocke and H. Eisele and S. Hader and Fred A. Hamprecht and W. Happold and Florian Raisch and J. Restle}
}
@conference {schimpf2002,
	title = {Novel insights into heat transfer across the aqueous boundary layer by infrared imagery and its application to air-sea exchange processes},
	booktitle = {Proceedings of Eurotherm 71 on Visualization, Imaging and Data Analysis In Convective Heat and Mass Transfer},
	year = {2002},
	author = {Uwe Schimpf and Christoph S. Garbe and Bernd J{\"a}hne}
}
@conference {bock2002,
	title = {Overview of the CoOP experiments: physical and chemical measurements parameterizing air-sea gas transfer},
	booktitle = {Gas Transfer at Water Surfaces},
	volume = {127},
	year = {2002},
	pages = {39--44},
	publisher = {American Geophysical Union},
	organization = {American Geophysical Union},
	doi = {10.1029/GM127p0039},
	author = {E. J. Bock and J. B. Edson and Nelson M. Frew and T. Hara and Horst Hau{\ss}ecker and Bernd J{\"a}hne and W. R. McGilles and S. P. McKenna and R. K. Nelson and Uwe Schimpf and B. M. Uz},
	editor = {M. A. Donelan and W. M. Drennan and R. Wanninkhof and E. S. Saltzman}
}
@conference {haussecker2002,
	title = {Physics from IR image sequences: Quantitative analysis of transport models and parameters of air-sea gas transfer},
	booktitle = {Gas Transfer at Water Surfaces},
	volume = {127},
	year = {2002},
	note = {invited},
	pages = {103--108},
	publisher = {American Geophysical Union},
	organization = {American Geophysical Union},
	doi = {10.1029/GM127p0103},
	author = {Horst Hau{\ss}ecker and Uwe Schimpf and Christoph S. Garbe and Bernd J{\"a}hne},
	editor = {E. S. Saltzman and M. A. Donelan and R. Wanninkhof and W. M. Drennan}
}
@article {spies2002d,
	title = {Range flow estimation.},
	journal = {Computer Vision and Image Understanding},
	volume = {85},
	number = {3},
	year = {2002},
	pages = {209--231},
	abstract = {We discuss the computation of the instantaneous 3D displacement vector fields of deformable surfaces from sequences of range data. We give a novel version of the basic motion constraint equation that can be evaluated directly on the sensor grid. The various forms of the aperture problem encountered are investigated and the derived constraint solutions are solved in a total least squares (TLS) framework. We propose a regularization scheme to compute dense full flow fields from the sparse TLS solutions. The performance of the algorithm is analyzed quantitatively for both synthetic and real data. Finally we apply the method to compute the 3D motion field of living plant leaves.},
	doi = {10.1006/cviu.2002.0970},
	author = {Hagen Spies and Bernd J{\"a}hne and John L. Barron}
}
@conference {garbe2002c,
	title = {Thermographic measurements in environmental and bio sciences},
	booktitle = {Quantitative Infrared Thermography},
	volume = {6},
	year = {2002},
	pages = {253--259},
	url = {http://qirt.gel.ulaval.ca/archives/qirt2002/papers/033.pdf},
	author = {Christoph S. Garbe and Uwe Schimpf and Ulrich Schurr and Bernd J{\"a}hne}
}
@conference {garbe2002d,
	title = {Thermographic measurements on plant leaves},
	booktitle = {ThermoSense},
	volume = {4710},
	year = {2002},
	pages = {407--416},
	publisher = {SPIE},
	organization = {SPIE},
	abstract = {An important process of plant physiology is the transpiration of plant leaves. It is actively controlled by pores (stomata) in the leaf and the governing feature for vital factors such as gas exchange and water transport affixed to which is the nutrient transport from the root to the shoot. Because of its importance, the transpiration and water transport in leaves have been extensively studied. However, current measurement techniques provide poor spatial and temporal resolution. With the use of one single low-NETD infrared camera important parameter of plant physiology such as transpiration rates, heat capacity per unit area of the leaf and the water flow velocity can be measured to high temporal and special resolution by techniques presented in this paper. The latent heat flux of a plant, which is directly proportional to the transpiration rate, can be measured with passive thermography. Here use is made of the linear relationship between the temperature difference between a non transpiring reference body and the transpiring leaf and the latent heat flux. From active thermography the heat capacity per unit area of the leaf can be measured. This method is termed active, because the response of the leaf temperature to an imposed energy flux is measured. Through the use of digital image processing techniques simultaneous measurements of the velocity field and temporal change of heated water parcels traveling through the leaf can be estimated from thermal image sequences.},
	doi = {10.1117/12.459590},
	author = {Christoph S. Garbe and Ulrich Schurr and Bernd J{\"a}hne},
	editor = {Maldague, X. P. and Rozlosnik, A. E.}
}
@conference {raisch2002,
	title = {Velocity and feature estimation of actin filaments using active contours in noisy fluorescence image sequences},
	booktitle = {Proc. 2nd IASTED Int. Conf. Visualization, Imaging and Image Processing},
	year = {2002},
	pages = {645--650},
	abstract = {We present a new approach for determining particle fea tures such as length, curvature and hence flexibility in addition to the velocity of moving single actin filaments in noisy fluorescence image sequences. The reliable deter mination of these features is essential for the analysis of the elementary force generation process of single motor molecules including heart and skeletal muscle myosins. First, the image sequence is preprocessed with the 3D structure tensor - where the third dimension is the time t in the image sequence - in order to eliminate noise and to obtain a measure for extracting coherently moving par ticles. Secondly, we determine the contour of the actin filaments with subpixel accuracy using active contours. Thereafter, we readjust a local coordinate system to elim inate inner movements of the active contour. In the fourth step, we estimate the initial position of the active contour in the next frame from the displacement vector field cal culated by the 3D structure tensor. The accuracy of the method is verified on synthetic test data, a prerequisite for the quantitative use of this method on experimentally obtained data. Finally this is demonstrated for fluorescence image sequences of actin filament movement in the in vitro motility assay.},
	author = {Florian Raisch and Hanno Scharr and Norbert Kirchge{\ss}ner and Bernd J{\"a}hne and Rainer H. A. Fink and D. Uttenweiler}
}
@incollection {jaehne2002f,
	title = {Wellenbewegte Wasseroberfl{\"a}che},
	year = {2002},
	pages = {259--262},
	publisher = {Wichmann},
	url = {http://d-nb.info/96618503X},
	author = {Bernd J{\"a}hne and G{\"u}nther Balschbach and D. Fu{\ss}},
	editor = {Thomas Luhmann}
}
@incollection {jaehne2001a,
	title = {Air-sea interaction: gas exchange},
	year = {2001},
	pages = {122 - 131},
	publisher = {Academic Press},
	doi = {10.1006/rwos.2001.0060},
	author = {Bernd J{\"a}hne},
	editor = {John H. Steele and Steve A. Thorpe and Karl K. Turekian}
}
@conference {spies2001b,
	title = {A general framework for image sequence processing},
	booktitle = {Fachtagung Informationstechnik},
	year = {2001},
	pages = {125--132},
	author = {Hagen Spies and Bernd J{\"a}hne}
}
@conference {wenig2001a,
	title = {Image sequence analysis of satellite NO$_2$ concnetration maps},
	booktitle = {Pattern Recognition, 23rd DAGM Symposium Munich},
	volume = {2191},
	year = {2001},
	pages = {223--230},
	publisher = {Springer},
	organization = {Springer},
	abstract = {Here we describe a new method for the quantification of a global NOx budget from image sequences of the GOME instrument on the ERS-2. The focus of this paper is on image processing techniques to separate tropospheric and stratospheric NO2-colums using normalized convolution with infinite impulse response filters (IIR) to interpolate gaps in the data and average the cloud coverage of the earth, the estimation the NO2 life time and the determination of regional NOx source strengths.},
	doi = {10.1007/3-540-45404-7_30},
	author = {Mark Wenig and Carsten Leue and S. Kraus and T. Wagner and Ulrich Platt and Bernd J{\"a}hne},
	editor = {B. Radig and S. Florczyk}
}
@incollection {huang2001,
	title = {Ocean wave spectra and integral properties},
	year = {2001},
	pages = {82--123},
	publisher = {Cambridge University Press},
	doi = {10.1017/CBO9780511552076.005},
	author = {N. E. Huang and Y. Toba and Z. Shen and J. Klinke and Bernd J{\"a}hne and M. L. Banner},
	editor = {I. S. F. Jones and Y Toba}
}
@article {leue2001,
	title = {Quantitative analysis of NO$_x$ emissions from Global Ozone Monitoring Experiment satellite image sequences},
	journal = {J. Geophys. Res.},
	volume = {106},
	number = {D6},
	year = {2001},
	pages = {5493--5505},
	abstract = {Nitric oxides (NOx) play a very important role among the anthropogenic trace gases. They affect human health and have an impact on ozone chemistry and climatic change. Here we describe a new method for the quantification of the global NOx budget from image sequences of the Global Ozone Monitoring Experiment (GOME) spectrometer on board the ERS 2 satellite. In contrast to measurements using ground-based or balloon- or aircraft-borne sensors, this instrument provides, for the first time, the possibility of observing global maps of NO2 column densities. As part of this work, algorithms were developed to analyze GOME spectra numerically and to extract physically relevant parameters from the resulting maps using image-processing techniques. Column densities of NO x were determined using differential optical absorption spectroscopy (DOAS) [Platt, 1994]. By the combined use of an efficient B-spline interpolation and an inversion algorithm based on Householder transformations, the numerical algorithms accelerate the retrievals by a factor of 26 with respect to previous methods. Moreover, techniques are presented for separating tropospheric and stratospheric NO2 colums and estimating the lifetime of NO2 in the troposphere. This allows determination of regional NOx source strengths. Independent of traditional methods, a global source strength of (43 {\textpm} 20) Tg N yr-1 is estimated. The accuracy of this method is comparable to that of established statistical approaches.},
	doi = {10.1029/2000JD900572},
	author = {Carsten Leue and Mark Wenig and T. Wagner and Klimm, O. and Ulrich Platt and Bernd J{\"a}hne}
}
@conference {garbe2001b,
	title = {Reliable estimates of the sea surface heat flux from image sequences},
	booktitle = {Proceedings of the 23th DAGM Symposium on Pattern Recognition, M{\"u}nchen},
	number = {2191},
	year = {2001},
	pages = {194--201},
	publisher = {Springer},
	organization = {Springer},
	abstract = {We present a new technique for estimating the sea surface heat flux from infrared image sequences. Based on solving an extension to the standard brightness change constraint equation in a total least squares (TLS) sense, the total derivative of the sea surface temperature with respect to time is obtained. Due to inevitable reflexes in field data the TLS framework was further extended to a robust estimation based on a Least Median of Squares Orthogonal Distances (LMSOD) scheme. From this it is possible for the first time to compute accurate heat flux densities to a high temporal and spatial resolution. Results obtained at the Heidelberg Aeolotron showed excellent agreement to ground truth and field data was obtained on the GasExII experiment.},
	doi = {10.1007/3-540-45404-7_26},
	author = {Christoph S. Garbe and Bernd J{\"a}hne},
	editor = {B. Radig}
}
@conference {jaehne2001c,
	title = {Simulation der Austauschprozesse an der Ozeanoberfl{\"a}che im Labor: das neue Heidelberger Aeolotron},
	booktitle = {Verhandlungen der Deutschen Physikalischen Gesellschaft, Spring Conference, Hamburg, 26.-30.03.2001},
	year = {2001},
	publisher = {Deutsche Physikalische Gesellschaft},
	organization = {Deutsche Physikalische Gesellschaft},
	abstract = {Die Mechanismen der kleinskaligen Austauschprozesse an der Meeresoberfl{\"a}che sind trotz ihrer Bedeutung f{\"u}r die globalen Energie- und Stoffkreisl{\"a}ufe bis heute weitgehend unverstanden. Erste Ergebnisse von Messungen am neuen Heidelberger Aeolotron, einem gro{\ss}en ringf{\"o}rmiger Wind/Wellen-Kanal, werden vorgestellt. Diese Versuchseinrichtung mit 10 m Durchmesser bietet neue experimentelle M{\"o}glichkeiten zur Untersuchung des W{\"a}rme- und Gasaustausches, der winderzeugten Wellen, der Mikroturbulenz an der Ozeanoberfl{\"a}che und Oberfl{\"a}chenfilmen. Es k{\"o}nnen Windgeschwindigkeiten bis zu 12 m/s, Luft- und Wassertemperaturen zwischen 5 und 35 Grad Celsius und W{\"a}rmefl{\"u}sse bis 1 kW/m^2 simuliert werden. Vorgestellt werden neue Methoden, mit denen sich aus W{\"a}rmebildsequenzen direkt der Nettow{\"a}rmefluss an der Wasseroberfl{\"a}che, die W{\"a}rmeaustauschrate und die Gasaustauschrate bestimmen lassen. Die ersten Messungen zeigen auch die Bedeutung von Oberfl{\"a}chenerneuerungsprozessen in der wasserseitigen Grenzschicht f{\"u}r den Stoffaustausch.},
	author = {Bernd J{\"a}hne}
}
@conference {spies2001c,
	title = {Surface expansion from range data sequences},
	booktitle = {Proceedings of the 23th DAGM Symposium on Pattern Recognition},
	year = {2001},
	pages = {163--169},
	publisher = {Springer},
	organization = {Springer},
	abstract = {We compute the range flow field, i.e. the 3D velocity field, of a moving deformable surface from a sequence of range data. This is done in a differential framework for which we derive a new constraint equation that can be evaluated directly on the sensor data grid. It is shown how 3D structure and intensity information can be used together in the estimation process. We then introduce a method to compute surface expansion rates from the now available velocity field. The accuracy of the proposed scheme is assessed on a synthetic data set. Finally we apply the algorithm to study 3D leaf motion and growth on a real range sequence.},
	doi = {10.1007/3-540-45404-7_22},
	author = {Hagen Spies and Bernd J{\"a}hne and John L. Barron}
}
@incollection {jaehne2001b,
	title = {Thermographie in den Umwelt- und Biowissenschaften},
	year = {2001},
	publisher = {Deutsche Gesellschaft f{\"u}r zerst{\"o}rungsfreie Pr{\"u}fung e.V.},
	author = {Bernd J{\"a}hne and Christoph S. Garbe and Uwe Schimpf and Ulrich Schurr}
}
@conference {klinke2001,
	title = {Wavenumber Spectra of Short Wind Waves: Laboratory Measurements and Interpretation},
	booktitle = {IGARSS {\textquoteright}01, Geoscience and Remote Sensing Symposium, Sydney, NSW, Australia},
	volume = {2},
	year = {2001},
	pages = {965-967},
	abstract = {Short wind-generated capillary-gravity waves were measured with a refraction-based optical technique in different wind/wave tanks. Directional wave number spectra were determined from the wave slope images for a wide range of wind speeds and fetches for the different geometries of the laboratory facilities. The shape of the wavenumber spectra and their dependence on die friction velocity and fetch were analyzed. We found that the parasitic capillaries dominate the capillary range of the spectra. The interpretation of the results is given by a physical model of the short wind-wave spectrum that takes the generation of parasitic capillaries under laboratory conditions into account},
	doi = {10.1109/IGARSS.2001.976695},
	author = {J. Klinke and Kudryavtsev, V. N. and Makin, V. K. and Bernd J{\"a}hne}
}
@incollection {spies2000e,
	title = {Analyzing particle movements at soil interfaces},
	year = {2000},
	pages = {648--649},
	publisher = {Academic Press},
	chapter = {A20},
	author = {Hagen Spies and Hermann Gr{\"o}ning and Horst Hau{\ss}ecker and Bernd J{\"a}hne and Horst Hau{\ss}ecker}
}
@incollection {geissler2000,
	title = {Analyzing size spectra of oceanic air bubbles},
	year = {2000},
	pages = {634--635},
	publisher = {Academic Press},
	chapter = {A13},
	author = {Peter Gei{\ss}ler and Bernd J{\"a}hne and Bernd J{\"a}hne and Horst Hau{\ss}ecker}
}
@incollection {wenig2000,
	title = {Cloud classification analyzing image sequences},
	year = {2000},
	pages = {652--653},
	publisher = {Academic Press},
	chapter = {A22},
	author = {Mark Wenig and Carsten Leue and Ulrich Platt and Bernd J{\"a}hne and Horst Hau{\ss}ecker}
}
@article {marxen2000,
	title = {Comparison of Gaussian particle center estimators and the achievable measurement density for particle tracking velocimetry},
	journal = {Exp. Fluids},
	volume = {29},
	year = {2000},
	pages = {145-153},
	abstract = {A series of numerical simulations were conducted to investigate the performance of two particle center estimation algorithms for Particle Tracking Velocimetry: a simple three-point Gaussian estimator and a least-square Gaussian. The smallest position error for images with reasonable noise levels was found to be approximately 0.03 pixels for both estimators using particles with diameters of 4 pixels. As both estimators performed equally well, use of the simple three-point Gaussian algorithm is recommended because it executes 100 times faster than the least-square algorithm. The maximum achievable measurement density and accuracy for the three-point Gaussian estimator were determined with a numerical simulation of an Oseen vortex. Uncertainty measures have been introduced to filter out unreliable displacement measurements. It was found that 4 to 5 velocity vectors could be obtained within a 32{\texttimes}32 pixel area with an average displacement error of 0.1 pixels. This doubles the spatial resolution of conventional cross-correlation based Particle Image Velocimetry at comparable accuracy.},
	doi = {10.1007/s003489900085},
	author = {Michael Marxen and Sullivan, P. E. and Loewen, M. R. and Bernd J{\"a}hne}
}
@book {jaehne2000c,
	title = {Computer Vision and Applications: A Guide for Students and Practitioners},
	year = {2000},
	pages = {679},
	publisher = {Academic Press},
	organization = {Academic Press},
	author = {Bernd J{\"a}hne and Horst Hau{\ss}ecker}
}
@conference {spies2000b,
	title = {Dense range flow from depth and intensity data},
	booktitle = {ICPR},
	year = {2000},
	pages = {131--134},
	doi = {10.1109/ICPR.2000.905290},
	author = {Hagen Spies and Bernd J{\"a}hne and John L. Barron}
}
@conference {spies2000c,
	title = {Dense structure estimation via regularised optical flow},
	booktitle = {VMV 2000},
	year = {2000},
	pages = {57--64},
	publisher = {Aka GmbH, Berlin},
	organization = {Aka GmbH, Berlin},
	author = {Hagen Spies and Norbert Kirchge{\ss}ner and Hanno Scharr and Bernd J{\"a}hne},
	editor = {Girod, G. and Greiner, G. and Hans-Peter Seidel and H. Niemann}
}
@conference {scharr2000c,
	title = {Flame front analysis in turbulent combustion},
	booktitle = {Mustererkennung 2000},
	year = {2000},
	pages = {325--332},
	publisher = {Springer},
	organization = {Springer},
	doi = {10.1007/978-3-642-59802-9_41},
	author = {Hanno Scharr and Bernd J{\"a}hne and S. B{\"o}ckle and J. Kazenwadel and T. Kunzelmann and C. Schulz and N. Kr{\"u}ger},
	editor = {G. Sommer and Ch. Perwasser}
}
@incollection {eichkorn2000,
	title = {Fluorescence imaging of air-water gas exchange},
	year = {2000},
	pages = {644-645},
	publisher = {Academic Press},
	chapter = {A18},
	author = {Sven Eichkorn and Thomas M{\"u}nsterer and Ulrike Lode and Bernd J{\"a}hne and Bernd J{\"a}hne and Horst Hau{\ss}ecker}
}
@incollection {hausecker2000d,
	title = {Fuzzy image processing},
	year = {2000},
	pages = {541--576},
	publisher = {Academic Press},
	chapter = {16},
	author = {Horst Hau{\ss}ecker and Hamid R. Tizhoosh and Bernd J{\"a}hne},
	editor = {Hau\DFecker, H.}
}
@incollection {geissler2000b,
	title = {Imaging optics},
	year = {2000},
	pages = {53--84},
	publisher = {Academic Press},
	chapter = {3},
	author = {Peter Gei{\ss}ler and Bernd J{\"a}hne},
	editor = {Hau\DFecker, H.}
}
@conference {schimpf2000a,
	title = {On the investigations of micro turbulence at the water surface using infrared imaging},
	booktitle = {IARGSS 2000},
	year = {2000},
	doi = {10.1109/IGARSS.2000.858091},
	author = {Uwe Schimpf and Horst Hau{\ss}ecker and Bernd J{\"a}hne}
}
@incollection {geissler2000a,
	title = {Monitoring living biomass with in situ microscopy},
	year = {2000},
	pages = {632--633},
	publisher = {Academic Press},
	chapter = {A12},
	author = {Peter Gei{\ss}ler and Thomas Scholz and Bernd J{\"a}hne and Horst Hau{\ss}ecker}
}
@incollection {haussecker2000c,
	title = {Motion},
	year = {2000},
	pages = {347--395},
	publisher = {Academic Press},
	chapter = {10},
	author = {Horst Hau{\ss}ecker and Hagen Spies and Bernd J{\"a}hne},
	editor = {Hau\DFecker, H.}
}
@article {uttenweiler2000,
	title = {Motion determination in actin filament fluorescence images with a spatio-temporal orientation analysis method.},
	journal = {Biophys J},
	volume = {78},
	number = {5},
	year = {2000},
	pages = {2709--2715},
	publisher = {Institut f{\"u}r Physiologie und Pathophysiologie, Ruprecht-Karls-Universit{\"a}t Heidelberg, 69120 Heidelberg, Germany. uttenweiler@urz.uni-heidelberg.de},
	abstract = {We present a novel approach of automatically measuring motion in series of microscopic fluorescence images. As a differential method, the three-dimensional structure tensor technique is used to calculate the displacement vector field for every image of the sequence, from which the velocities are subsequently derived. We have used this method for the analysis of the movement of single actin filaments in the in vitro motility assay, where fluorescently labeled actin filaments move over a myosin decorated surface. With its fast implementation and subpixel accuracy, this approach is, in general, very valuable for analyzing dynamic processes by image sequence analysis.},
	doi = {10.1016/S0006-3495(00)76815-9},
	author = {D. Uttenweiler and C. Veigel and R. Steubing and Carlo G{\"o}tz and Sven Mann and Horst Hau{\ss}ecker and Bernd J{\"a}hne and Rainer H. A. Fink}
}
@incollection {jaehne2000d,
	title = {Neighborhood operators},
	year = {2000},
	pages = {273--345},
	publisher = {Academic Press},
	chapter = {9},
	author = {Bernd J{\"a}hne and Bernd J{\"a}hne and Horst Hau{\ss}ecker}
}
@incollection {leue2000,
	title = {NOX Emissions Retrieved from Satellite Images},
	year = {2000},
	pages = {654--655},
	publisher = {Academic Press},
	chapter = {A23},
	author = {Carsten Leue and Mark Wenig and Ulrich Platt and Bernd J{\"a}hne and Horst Hau{\ss}ecker}
}
@incollection {schmundt2000,
	title = {Optical leaf growth analysis},
	year = {2000},
	pages = {640-641},
	publisher = {Academic Press},
	chapter = {A16},
	author = {Dominik Schmund and Ulrich Schurr and Bernd J{\"a}hne},
	editor = {Hau\DFecker, H.}
}
@incollection {engelmann2000b,
	title = {Particle-tracking velocimetry},
	year = {2000},
	pages = {646-647},
	publisher = {Academic Press},
	chapter = {A19},
	author = {D. Engelmann and M. St{\"o}hr and Christoph S. Garbe and Frank Hering and Bernd J{\"a}hne},
	editor = {Hau\DFecker, H.}
}
@incollection {jaehne2000a,
	title = {Performance characteristics of low-level motion estimation in spatiotemporal images},
	year = {2000},
	note = {invited, Workshop Schloss Dagstuhl, March 16-20, 1998},
	pages = {pp. 139-152},
	publisher = {Kluwer, Dordrecht},
	doi = {10.1007/978-94-015-9538-4_12},
	author = {Bernd J{\"a}hne and Horst Hau{\ss}ecker},
	editor = {R. Klette and H. S. Stiehl and K. Vincken and M. Viergever}
}
@incollection {haussecker2000a,
	title = {Radiation and illumination},
	year = {2000},
	pages = {11--52},
	publisher = {Academic Press},
	chapter = {2},
	author = {Horst Hau{\ss}ecker and Bernd J{\"a}hne},
	editor = {Hau\DFecker, H.}
}
@incollection {haussecker2000b,
	title = {Radiometry of imaging},
	year = {2000},
	pages = {85--109},
	publisher = {Academic Press},
	chapter = {4},
	author = {Horst Hau{\ss}ecker and Bernd J{\"a}hne},
	editor = {Hau\DFecker, H.}
}
@conference {spies2000a,
	title = {Regularised range flow},
	booktitle = {European Conference on Computer Vision (ECCV)},
	volume = {2},
	year = {2000},
	pages = {785--799},
	publisher = {Springer},
	organization = {Springer},
	abstract = {Extending a differential total least squares method for range flow estimation we present an iterative regularisation approach to compute dense range flow fields. We demonstrate how this algorithm can be used to detect motion discontinuities. This can can be used to segment the data into independently moving regions. The different types of aperture problem encountered are discussed. Our regularisation scheme then takes the various types of flow vectors and combines them into a smooth flow field within the previously segmented regions. A quantitative performance analysis is presented on both synthetic and real data. The proposed algorithm is also applied to range data from castor oil plants obtained with the Biris laser range sensor to study the 3-D motion of plant leaves.},
	doi = {10.1007/3-540-45053-X_50},
	author = {Hagen Spies and Bernd J{\"a}hne and John L. Barron},
	editor = {Vernon, D.}
}
@incollection {jaehne2000b,
	title = {Representation of multidimensional signals},
	year = {2000},
	pages = {211--272},
	publisher = {Academic Press},
	chapter = {8},
	author = {Bernd J{\"a}hne and Bernd J{\"a}hne and Horst Hau{\ss}ecker}
}
@incollection {schimpf2000b,
	title = {Small-scale air-sea interaction with thermography},
	year = {2000},
	pages = {638--639},
	publisher = {Academic Press},
	chapter = {A15},
	author = {Uwe Schimpf and Horst Hau{\ss}ecker and Bernd J{\"a}hne and Bernd J{\"a}hne and Horst Hau{\ss}ecker}
}
@incollection {kuemmerlen2000,
	title = {Thermography to measure water relations of plant leaves},
	year = {2000},
	pages = {636--637},
	publisher = {Academic Press},
	chapter = {A14},
	author = {Bernd K{\"u}mmerlen and Stefan Dauwe and Dominik Schmund and Ulrich Schurr and Bernd J{\"a}hne and Horst Hau{\ss}ecker}
}
@incollection {geissler2000c,
	title = {Three-dimensional imaging algorithms},
	year = {2000},
	pages = {397--438},
	publisher = {Academic Press},
	chapter = {11},
	author = {Peter Gei{\ss}ler and Tobias Dierig and Hanspeter A. Mallot and Bernd J{\"a}hne},
	editor = {Hau\DFecker, H.}
}
@inbook {stoehr1999,
	title = {4D particle tracking velocimetry applied to gas-liquid reactors},
	booktitle = {In Scientific Computing in Chemical Engineering II - Simulation, Image Processing, Optimization and Control.},
	year = {1999},
	pages = {270--279},
	publisher = {Springer Verlag},
	organization = {Springer Verlag},
	author = {M. St{\"o}hr and Christoph S. Garbe and D. Engelmann and Peter Gei{\ss}ler and Gomes, S. and Frank Hering and Bernd J{\"a}hne and F. Keil and W. Mackens and H. Vo{\ss} and Wagner, H.-G..},
	editor = {J. Werther}
}
@conference {schimpf1999b,
	title = {Air--sea gas transfer and micro turbulence at the ocean surface using infrared image processing},
	booktitle = {Geoscience and Remote Sensing Symposium, 1999. IGARSS apos;99 Proceedings. IEEE 1999 International},
	volume = {1},
	year = {1999},
	pages = {11--13},
	abstract = {To obtain an insight into the transfer process at the air-water interface new techniques for the quantitative investigation of the gas exchange have been developed. The controlled flux technique, CFT (Jahne et al. 1989) uses heat as a proxy tracer for gases to measure the air-sea gas transfer velocity with a high spatial and temporal resolution. The results of a field cruise and a laboratory study are discussed and compared with a model (Schimpf et al.) predicting the sea surface temperature distribution based on surface renewal (Danckwerts 1970). The sea surface temperature fluctuations associated with the interplay of diffusive and turbulent transport give direct insight into the mechanisms of gas transfer. Using infrared image processing the spatial structure of the micro turbulence at the ocean surface is analyzed.},
	doi = {10.1109/IGARSS.1999.773384},
	author = {Uwe Schimpf and Horst Hau{\ss}ecker and Bernd J{\"a}hne}
}
@incollection {spies1999,
	title = {Analyzing particle movements at soil interfaces},
	volume = {3: Systems and Applications},
	year = {1999},
	pages = {699-718},
	publisher = {Academic Press},
	chapter = {32},
	author = {Hagen Spies and Oliver Beringer and Hermann Gr{\"o}ning and Horst Hau{\ss}ecker and Bernd J{\"a}hne and Horst Hau{\ss}ecker and Peter Gei{\ss}ler}
}
@incollection {jaehne1999,
	title = {Bl{\"a}tter, Wind und Wellen. Unsichtbares wird sichtbar.},
	year = {1999},
	pages = {38--43},
	publisher = {dot-Verlag},
	author = {Bernd J{\"a}hne},
	editor = {G. Dotzler}
}
@incollection {jaehne1999a,
	title = {Continuous and digital signals},
	volume = {2},
	year = {1999},
	pages = {9--34},
	publisher = {Academic Press},
	chapter = {2},
	author = {Bernd J{\"a}hne and Bernd J{\"a}hne and Horst Hau{\ss}ecker and Peter Gei{\ss}ler}
}
@incollection {geissler1999a,
	title = {Depth-from-focus for the measurement of size distributions of small particles},
	volume = {3: Systems and Applications},
	year = {1999},
	pages = {623-646},
	publisher = {Academic Press},
	chapter = {29},
	author = {Peter Gei{\ss}ler and Thomas Scholz and Bernd J{\"a}hne and Horst Hau{\ss}ecker and Peter Gei{\ss}ler}
}
@conference {spies1999a,
	title = {Differential range flow estimation},
	booktitle = {Proceedings of the 21th DAGM Symposium on Pattern Recognition},
	year = {1999},
	note = {DAGM award},
	pages = {309--316},
	doi = {10.1007/978-3-642-60243-6_36},
	author = {Hagen Spies and Horst Hau{\ss}ecker and Bernd J{\"a}hne and John L. Barron}
}
@incollection {noffz1999,
	title = {Field Programmable Gate Array image processing},
	volume = {3: Systems and Applications},
	year = {1999},
	publisher = {Academic Press},
	chapter = {2},
	author = {Noffz, K.-H. and Lay, R. and M{\"a}nner, R. and Bernd J{\"a}hne and Bernd J{\"a}hne and Peter Gei{\ss}ler and Horst Hau{\ss}ecker}
}
@incollection {eichkorn1999,
	title = {Fluorescenceimaging of air-water gas exchange},
	volume = {3: Systems and Applications},
	year = {1999},
	pages = {647-662},
	publisher = {Academic Press},
	chapter = {30},
	author = {Sven Eichkorn and Thomas M{\"u}nsterer and Ulrike Lode and Bernd J{\"a}hne and Bernd J{\"a}hne and Horst Hau{\ss}ecker and Peter Gei{\ss}ler}
}
@incollection {haussecker1999g,
	title = {Fuzzy image processing},
	volume = {2: Signal Processing and Pattern Recognition},
	year = {1999},
	pages = {683--727},
	publisher = {Academic Press},
	chapter = {22},
	author = {Horst Hau{\ss}ecker and Hamid R. Tizhoosh and Bernd J{\"a}hne and Peter Gei{\ss}ler and Horst Hau{\ss}ecker}
}
@article {jaehne1999o,
	title = {Gut beleuchtet ist halb gemessen},
	journal = {QZ},
	volume = {44},
	number = {10},
	year = {1999},
	pages = {1283--1288},
	url = {https://www.qz-online.de/qz-zeitschrift/archiv/artikel/art-der-lichtquelle-und-der-einstrahlbedingungen-sind-entscheidend-gut-beleuchtet-ist-halb-gemessen-345974.html},
	author = {Bernd J{\"a}hne}
}
@book {jaehne1999b,
	title = {Handbook of Computer Vision and Applications},
	year = {1999},
	publisher = {Academic Press},
	organization = {Academic Press},
	author = {Bernd J{\"a}hne and Peter Gei{\ss}ler and Horst Hau{\ss}ecker}
}
@conference {jaehne1999r,
	title = {The Heidelberg Aelotron --- a new facility for laboratory investigations of small-scale air-sea interaction},
	booktitle = {The Wind-Driven Air-Sea Interface: Electromagnetic and Acoustic Sensing, Wave Dynamics and Turbulent Fluxes},
	year = {1999},
	note = {Poster},
	doi = {10.5281/zenodo.14857},
	author = {Bernd J{\"a}hne and Horst Hau{\ss}ecker and Uwe Schimpf and G{\"u}nther Balschbach},
	editor = {M. L. Banner}
}
@conference {jaehne1999m,
	title = {The Heidelberg Aeolotron - a new facility for laboratory investigations of small scale air-sea interaction},
	booktitle = {Poster presented at: The Wind-Driven Air-Sea Interface: Electromagnetic and Acoustic Sensing, Wave Dynamics and Turbulent Fluxes},
	year = {1999},
	abstract = {The study of small-scale air sea interaction still lacks suitable facilities. No facilities are available with large fetches and correspondingly high wave ages. Furthermore almost no large facility is suitable for measurements with sea water, is clean enough for controllable experiments with surface films or sufficiently gas tight for gas exchange measurements. Currently a new large annular wind/wave facility with quasi unlimited fetch is under construction at the Institute for Environmental Physics of Heidelberg University. An annular facility is not a new idea. A 40 m diameter facility ({\textquoteleft}{\textquoteleft}storm basin{\textquoteright}{\textquoteright}) was already built shortly after World War II in Sevastopol for wind/wave interaction studies. Various small circular facilities for air-sea gas exchange studies have been used since the late seventies at Heidelberg University and later at Woods Hole Oceanographic Institution for air-sea gas exchange studies. The new facility builds on the experience with these facilities but now reaches a critical size. It has an outer diameter of 10 m, the channel is 0.65 m wide and 2.4 m high and can be filled with water up to a height of 1.2 m. It is thus a rather deep facility. Only the wind/wave flume of the Hydraulic facility at Scripps Institution of Oceanography is deeper with a depth of 1.5 m. Since the maximum phase speed of the waves is 3.4 m/s, high wave age conditions can be reached at least for low and medium wind speeds. The facility is designed for a maximum wind speed of 15 m/s. Water currents can be generated separately by a set of thrusters. The air space is gas tight and the materials that come into contact with the water and air make experiments possible with de-ionized water, artificial seawater, surfactants, and reactive gases. Water temperatures and heat fluxes across the interface range from 5o to 35oC and from -0.5 to 1 kW/m2, respectively. We plan to focus in the next decade on measurements revealing the mechanism of air-sea gas transfer including the effects of surfactants and waves. The new facility will be open for guest scientists. The experimental possibilities of the facility are detailed to show the opportunities for international cooperation.},
	author = {Bernd J{\"a}hne and Horst Hau{\ss}ecker and Uwe Schimpf and G{\"u}nther Balschbach}
}
@incollection {jaehne1999c,
	title = {Hyperspectral and color imaging},
	year = {1999},
	pages = {309--320},
	publisher = {Academic Press},
	chapter = {11},
	author = {Bernd J{\"a}hne and Bernd J{\"a}hne and Horst Hau{\ss}ecker},
	editor = {Peter Gei{\ss}ler}
}
@incollection {haussecker1999f,
	title = {Illumination sources and techniques},
	volume = {1: Sensors and Imaging},
	year = {1999},
	pages = {137--162},
	publisher = {Academic Press},
	chapter = {6},
	author = {Horst Hau{\ss}ecker and Bernd J{\"a}hne and Peter Gei{\ss}ler and Horst Hau{\ss}ecker}
}
@incollection {jaehne1999d,
	title = {Image warping},
	year = {1999},
	pages = {193--206},
	publisher = {Academic Press},
	chapter = {9},
	author = {Bernd J{\"a}hne and Bernd J{\"a}hne and Horst Hau{\ss}ecker},
	editor = {Peter Gei{\ss}ler}
}
@incollection {gei{\ss}ler1999,
	title = {Imaging optics},
	volume = {1: Sensors and Imaging},
	year = {1999},
	pages = {63--101},
	publisher = {Academic Press},
	chapter = {4},
	author = {Peter Gei{\ss}ler and Bernd J{\"a}hne and Peter Gei{\ss}ler and Horst Hau{\ss}ecker}
}
@incollection {haussecker1999d,
	title = {Interaction of radiation with matter},
	volume = {1: Sensors and Imaging},
	year = {1999},
	pages = {37--62},
	publisher = {Academic Press},
	chapter = {3},
	author = {Horst Hau{\ss}ecker and Bernd J{\"a}hne and Peter Gei{\ss}ler and Horst Hau{\ss}ecker}
}
@incollection {jaehne1999e,
	title = {Interpolation},
	year = {1999},
	pages = {175--192},
	publisher = {Academic Press},
	chapter = {8},
	author = {Bernd J{\"a}hne and Bernd J{\"a}hne and Horst Hau{\ss}ecker},
	editor = {Peter Gei{\ss}ler}
}
@incollection {jaehne1999f,
	title = {Local averaging},
	year = {1999},
	pages = {153--174},
	publisher = {Academic Press},
	chapter = {7},
	author = {Bernd J{\"a}hne and Bernd J{\"a}hne and Horst Hau{\ss}ecker},
	editor = {Peter Gei{\ss}ler}
}
@incollection {jaehne1999g,
	title = {Local structure},
	year = {1999},
	pages = {209--238},
	publisher = {Academic Press},
	chapter = {10},
	author = {Bernd J{\"a}hne and Bernd J{\"a}hne and Horst Hau{\ss}ecker},
	editor = {Peter Gei{\ss}ler}
}
@incollection {haussecker1999c,
	title = {Motion},
	volume = {2: Signal Processing and Pattern Recognition},
	year = {1999},
	pages = {309--396},
	publisher = {Academic Press},
	chapter = {13},
	author = {Horst Hau{\ss}ecker and Hagen Spies and Bernd J{\"a}hne and Peter Gei{\ss}ler and Horst Hau{\ss}ecker}
}
@incollection {jaehne1999h,
	title = {Multimedia architectures},
	volume = {3: Systems and Applications},
	year = {1999},
	pages = {31--52},
	publisher = {Academic Press},
	chapter = {3},
	author = {Bernd J{\"a}hne and Helmut Herrmann and Bernd J{\"a}hne and Horst Hau{\ss}ecker},
	editor = {Peter Gei{\ss}ler}
}
@incollection {jaehne1999i,
	title = {Multiresolutional signal representation},
	volume = {2},
	year = {1999},
	pages = {67--90},
	publisher = {Academic Press},
	chapter = {4},
	author = {Bernd J{\"a}hne and Bernd J{\"a}hne and Horst Hau{\ss}ecker and Peter Gei{\ss}ler}
}
@incollection {jaehne1999q,
	title = {Neighborhood operators},
	year = {1999},
	pages = {93--124},
	publisher = {Academic Press},
	chapter = {5},
	author = {Bernd J{\"a}hne and Bernd J{\"a}hne and Horst Hau{\ss}ecker},
	editor = {Peter Gei{\ss}ler}
}
@conference {klinke1999,
	title = {Observations of free and bound gravity-capillary Waves},
	booktitle = {The Wind-Driven Air-Sea Interface, Electromagnetic and Acoustic Sensing, Wave Dynamics and Turbulent Fluxes},
	year = {1999},
	pages = {87--88},
	doi = {10.5281/zenodo.14908},
	author = {J. Klinke and Bernd J{\"a}hne and S. R. Long}
}
@incollection {engelmann1999a,
	title = {Particle-tracking velocimetry},
	volume = {3: Systems and Applications},
	year = {1999},
	pages = {663-697},
	publisher = {Academic Press},
	chapter = {31},
	author = {D. Engelmann and M. St{\"o}hr and Christoph S. Garbe and Frank Hering and Bernd J{\"a}hne and Horst Hau{\ss}ecker and Peter Gei{\ss}ler}
}
@incollection {schmundt1999a,
	title = {Plant-leaf growth studied by image sequence analysis},
	volume = {3: Systems and Applications},
	year = {1999},
	pages = {719-735},
	publisher = {Academic Press},
	chapter = {33},
	author = {Dominik Schmund and Ulrich Schurr and Bernd J{\"a}hne and Horst Hau{\ss}ecker and Peter Gei{\ss}ler}
}
@incollection {jaehne1999k,
	title = {Principles of Filter Design},
	volume = {2},
	year = {1999},
	pages = {125--151},
	publisher = {Academic Press},
	author = {Bernd J{\"a}hne and Hanno Scharr and K{\"o}rkel, S. and Bernd J{\"a}hne and Horst Hau{\ss}ecker and Peter Gei{\ss}ler}
}
@incollection {haussecker1999b,
	title = {Radiation},
	volume = {1: Sensors and Imaging},
	year = {1999},
	pages = {7--35},
	publisher = {Academic Press},
	chapter = {2},
	author = {Horst Hau{\ss}ecker and Bernd J{\"a}hne and Peter Gei{\ss}ler and Horst Hau{\ss}ecker}
}
@incollection {haussecker1999e,
	title = {Radiometry of imaging},
	volume = {1: Sensors and Imaging},
	year = {1999},
	pages = {103--135},
	publisher = {Academic Press},
	chapter = {5},
	author = {Horst Hau{\ss}ecker and Bernd J{\"a}hne and Peter Gei{\ss}ler and Horst Hau{\ss}ecker}
}
@incollection {leue1999a,
	title = {Retrieval of Atmospheric Trace Gas Concentrations},
	volume = {3: Systems and Applications},
	year = {1999},
	pages = {783-805},
	publisher = {Academic Press},
	chapter = {37},
	author = {Carsten Leue and Mark Wenig and Ulrich Platt and Bernd J{\"a}hne and Peter Gei{\ss}ler and Horst Hau{\ss}ecker}
}
@incollection {jaehne1999l,
	title = {Spatial and fourier domain},
	year = {1999},
	pages = {35--66},
	publisher = {Academic Press},
	chapter = {3},
	author = {Bernd J{\"a}hne and Bernd J{\"a}hne and Horst Hau{\ss}ecker},
	editor = {Peter Gei{\ss}ler}
}
@conference {schimpf1999,
	title = {Studies of air-sea gas transfer and micro turbulence at the ocean surface using passive thermography},
	booktitle = {The Wind-Driven Air-Sea Interface, Electromagnetic and Acoustic Sensing, Wave Dynamics and Turbulent Fluxes},
	year = {1999},
	note = {Poster},
	doi = {10.5281/zenodo.14567},
	author = {Uwe Schimpf and Horst Hau{\ss}ecker and Bernd J{\"a}hne},
	editor = {M. L. Banner}
}
@incollection {schimpf1999a,
	title = {Studies of small-scale air-sea interaction with active and passive thermography},
	volume = {3: Systems and Applications},
	year = {1999},
	pages = {751-762},
	publisher = {Academic Press},
	chapter = {35},
	author = {Uwe Schimpf and Horst Hau{\ss}ecker and Bernd J{\"a}hne and Bernd J{\"a}hne and Peter Gei{\ss}ler and Horst Hau{\ss}ecker}
}
@conference {zhang1999b,
	title = {A study of advection of short wind waves by long waves from surface slope images},
	booktitle = {The Wind-Driven Air-Sea Interface, Electromagnetic and Acoustic Sensing, Wave Dynamics and Turbulent Fluxes},
	year = {1999},
	pages = {93--97},
	doi = {10.5281/zenodo.14909},
	author = {Zhang, X. and J. Klinke and Bernd J{\"a}hne}
}
@incollection {kuemmerlen1999,
	title = {Thermography to measure water relations of plant leaves},
	volume = {3: Systems and Applications},
	year = {1999},
	pages = {763-781},
	publisher = {Academic Press},
	chapter = {36},
	author = {Bernd K{\"u}mmerlen and Stefan Dauwe and Dominik Schmund and Ulrich Schurr and Bernd J{\"a}hne and Peter Gei{\ss}ler and Horst Hau{\ss}ecker}
}
@conference {engelmann1999,
	title = {Three dimensional flow dynamics beneath the air-water interface},
	booktitle = {The Wind-Driven Air-Sea Interface, Electromagnetic and Acoustic Sensing, Wave Dynamics and Turbulent Fluxes},
	year = {1999},
	pages = {181--184},
	doi = {10.5281/zenodo.14910},
	author = {D. Engelmann and Christoph S. Garbe and M. St{\"o}hr and Bernd J{\"a}hne}
}
@conference {haussecker1999a,
	title = {A total least squares framework for low-level analysis of dynamic scenes and processes},
	booktitle = {Proceedings of the 21th DAGM Symposium on Pattern Recognition},
	year = {1999},
	note = {DAGM award},
	pages = {240--249},
	publisher = {Springer},
	organization = {Springer},
	doi = {10.1007/978-3-642-60243-6_28},
	author = {Horst Hau{\ss}ecker and Christoph S. Garbe and Hagen Spies and Bernd J{\"a}hne}
}
@booklet {jaehne1999p,
	title = {Wenn Unsichtbares sichtbar wird},
	year = {1999},
	author = {Bernd J{\"a}hne}
}
@article {jaehne1999n,
	title = {When the invisible becomes visible},
	journal = {German research, Magazine of the German Research Foundation (DFG)},
	year = {1999},
	pages = {30--33},
	doi = {10.5281/zenodo.14914},
	author = {Bernd J{\"a}hne}
}
@article {jaehne1998,
	title = {Air-water gas exchange},
	journal = {Annu. Rev. Fluid Mech.},
	volume = {30},
	year = {1998},
	pages = {443--468},
	abstract = {The exchange of inert and sparingly soluble gases - including carbon dioxide, methane, and oxygen - between the atmosphere and oceans is controlled by a thin 20- to 200-um-thick boundary layer at the top of the ocean. The hydrodynamics in this layer are significantly different from boundary layers at rigid walls, since the orbital motion of the waves is of the same order as the velocities in the viscous boundary layer. Laboratory and field measurements show that wind waves significantly increase the gas transfer rate and that it is significantly influenced in this way by surfactants. Because of limited experimental techniques, the mechanisms for this enhancement and the structure of the turbulence in the boundary layer at a wavy water surface are still not known. A number of new imaging techniques are described that give direct insight into the processes and promise to trigger substantial theoretical progress in the near future.},
	doi = {10.1146/annurev.fluid.30.1.443},
	author = {Bernd J{\"a}hne and Horst Hau{\ss}ecker}
}
@article {leue1998a,
	title = {GOME mi{\ss}t atmosph{\"a}rische Stickoxide. Globale Biomassenverbrennung und Industrieemissionen},
	journal = {Physik in unserer Zeit},
	volume = {29},
	number = {4},
	year = {1998},
	pages = {179},
	doi = {10.1002/piuz.19980290410},
	author = {Carsten Leue and Mark Wenig and Bernd J{\"a}hne and Ulrich Platt}
}
@article {muensterer1998,
	title = {LIF measurements of concentration profiles in the aqueous mass boundary layer},
	journal = {Exp. Fluids},
	volume = {25},
	year = {1998},
	pages = {190--196},
	abstract = {A laser-induced fluorescence (LIF) technique is described to measure vertical concentration profiles of gases in the aqueous mass boundary layer at a free water surface. The technique uses an acid-base reaction of the fluorescence indicator fluorescein at the water surface to visualize the concentration profiles. The technique is capable of measuring two-dimensional vertical concentration profiles at a rate of 200 frames/s and a spatial resolution of 16 um. The mass boundary layer at a free surface is characterized by significant fluctuations. Direct surface renewal is observed. The mean profiles also support rather surface renewal models than turbulent diffusion models.},
	doi = {10.1007/s003480050223},
	author = {Thomas M{\"u}nsterer and Bernd J{\"a}hne}
}
@conference {schimpf1998,
	title = {Measurements of air--sea gas transfer using active and passive thermography},
	booktitle = {Eurochem 387 "Remote Sensing of Slicks and Air--Sea Interactions"},
	year = {1998},
	author = {Uwe Schimpf and Horst Hau{\ss}ecker and Bernd J{\"a}hne}
}
@conference {haussecker1998,
	title = {Measurements of the air-sea gas transfer and its mechanisms by active and passive thermography},
	booktitle = {Proc. IEEE International Geoscience and Remote Sensing Symposium IGARSS {\textquoteright}98},
	volume = {1},
	year = {1998},
	pages = {484--486 vol.1},
	abstract = {In order to reliably measure air-sea gas transfer velocities in the field with a high spatial and temporal resolution a new technique has been developed called the controlled flux technique, CFT. The current implementation splits up into two independent techniques using active and passive thermography, respectively. The CFT field instrument has been successfully used during two research cruises along the California Pacific coast (MBL/CoOP, 1995) and on the North Atlantic (CoOP, 1997). In addition to in-situ gas transfer rates, thermography of the ocean surface gives direct insight into the mechanisms of gas transfer. It has been shown that surface renewal dominates the transfer processes even at low wind speeds.},
	doi = {10.1109/IGARSS.1998.702947},
	author = {Horst Hau{\ss}ecker and Uwe Schimpf and Bernd J{\"a}hne}
}
@conference {herrmann1998,
	title = {Modulare Software f{\"u}r die h{\"o}herdimensionale Bildverarbeitung},
	booktitle = {5. ABW-Workshop, TA Esslingen 20.--21.01.1998},
	year = {1998},
	doi = {10.5281/zenodo.14326},
	author = {Helmut Herrmann and Bernd J{\"a}hne}
}
@conference {balschbach1998,
	title = {Multichannel shape from shading techniques for moving specular surfaces},
	booktitle = {ECCV 1998},
	volume = {1407},
	year = {1998},
	pages = {170--184},
	publisher = {Springer, Berlin},
	organization = {Springer, Berlin},
	doi = {10.1007/BFb0054740},
	author = {G{\"u}nther Balschbach and J. Klinke and Bernd J{\"a}hne},
	editor = {Burkhardt, H. and Neumann, B.}
}
@article {hering1998,
	title = {Particle tracking velocimetry beneath water waves. part II : water waves},
	journal = {Exp. Fluids},
	volume = {24},
	number = {1},
	year = {1998},
	pages = {10-16},
	abstract = {Particle Tracking techniques described earlier in the first part of this paper (Hering et al. 1997) were used to study the flow field beneath mechanically generated and wind induced flow fields. Experiments were conducted at three different wind/wave facilities (Heidelberg, Delft and San Diego). Particle Tracking allows an extensive study of drift velocities, wave orbital motion and turbulent Reynolds Stress beneath water waves. Monte Carlo simulations show, that the effects of the moving water surface on the calculation of mean properties of a flow can easily be avoided by Lagrangian measurements. Due to micro-scale wave breaking friction velocity profiles show a significant increase of turbulence towards the interface.},
	doi = {10.1007/s003480050145},
	author = {Frank Hering and Dietmar Wierzimok and Carsten Leue and Bernd J{\"a}hne}
}
@article {schmundt1998,
	title = {Quantitative analysis of the local rates of growth of dicot leaves at a high temporal and spatial resolution, using image sequence analysis},
	journal = {Plant Journal},
	volume = {16},
	year = {1998},
	pages = {505--514},
	abstract = {A new technique is presented for quantitative mapping of dicot leaf growth at high spatial and temporal resolution, at a speed making online-mapping feasible. Time lapse video sequences of growing leaves are captured by a personal computer (PC) with a frame-grabber board and a standard CCD camera, and evaluated using algorithms that have been recently developed to analyse motion in dynamic image sequences. Growth can be detected at under 1\% per hour, with a time resolution of minutes and a spatial resolution of a few millimeters. The new technique has been verified by comparing it with classical approaches to map integrated growth. Diurnal courses of leaf growth of Ricinus communis and tobacco are presented to demonstrate the localised character of growth in leaves. Expansion growth is restricted to the base of the leaf and is restricted to a few hours at the end of the night and the start of the day. The high resolution of the method is illustrated by mapping the responses to step-changes in leaf turgor. A 3 bar turgor jump led to a rapid transient expansion over the entire length of the leaf that was partially reversed when the turgor was relaxed.},
	doi = {10.1046/j.1365-313x.1998.00314.x},
	author = {Dominik Schmund and Mark Stitt and Bernd J{\"a}hne and Ulrich Schurr}
}
@article {leue1998,
	title = {Quantitative observation of biomass-burning plumes from GOME},
	journal = {ESA Publications EOQ},
	volume = {58},
	year = {1998},
	pages = {33--35},
	url = {http://esapub.esrin.esa.it/eoq/eoq58},
	author = {Carsten Leue and Mark Wenig and Bernd J{\"a}hne and Ulrich Platt}
}
@article {jaehne1998a,
	title = {Sehen, was man sonst nicht sieht},
	journal = {Ruperto Carola},
	number = {3},
	year = {1998},
	pages = {32--36},
	doi = {10.5281/zenodo.14917},
	url = {http://www.uni-heidelberg.de/uni/presse/RuCa3_98/jaehne.htm},
	author = {Bernd J{\"a}hne}
}
@conference {engelmann1998,
	title = {Stereo particle tracking},
	booktitle = {Proc. of the 8th International Symposium on Flow Visualization},
	year = {1998},
	pages = {240--249},
	doi = {10.5281/zenodo.14906},
	author = {D. Engelmann and Christoph S. Garbe and M. St{\"o}hr and Peter Gei{\ss}ler and Frank Hering and Bernd J{\"a}hne}
}
@conference {jaehne1998b,
	title = {Study of dynamical processes with tensor-based spatiotemporal image processing techniques},
	booktitle = {ECCV 1998},
	volume = {1407},
	year = {1998},
	pages = {322--336},
	publisher = {Springer},
	organization = {Springer},
	abstract = {Image sequence processing techniques are used to study exchange, growth, and transport processes and to tackle key questions in environmental physics and biology. These applications require high accuracy for the estimation of the motion field since the most interesting parameters of the dynamical processes studied are contained in first-order derivatives of the motion field or in dynamical changes of the moving objects. Therefore the performance and optimization of low-level motion estimators is discussed. A tensor method tuned with carefully optimized derivative filters yields reliable and dense displacement vector fields (DVF) with an accuracy of up to a few hundredth pixels/frame for real-world images. The accuracy of the tensor method is verified with computer-generated sequences and a calibrated image sequence. With the improvements in accuracy the motion estimation is now rather limited by imperfections in the CCD sensors, especially the spatial nonuniformity in the responsivity. With a simple two-point calibration, these effects can efficiently be suppressed. The application of the techniques to the analysis of plant growth, to ocean surface microturbulence in IR image sequences, and to sediment transport is demonstrated.},
	doi = {10.1007/BFb0054750},
	author = {Bernd J{\"a}hne and Horst Hau{\ss}ecker and Hanno Scharr and Hagen Spies and Dominik Schmund and Ulrich Schurr}
}
@conference {haussecker1998a,
	title = {Tensor-based image sequence processing techniques for the study of dynamical processes},
	booktitle = {Proc. Intern. Symp. On Real-time Imaging and Dynamic Analysis},
	year = {1998},
	pages = {704--711},
	publisher = {International Society of Photogrammetry and Remote Sensing, ISPRS, Commision V},
	organization = {International Society of Photogrammetry and Remote Sensing, ISPRS, Commision V},
	author = {Horst Hau{\ss}ecker and Hagen Spies and Bernd J{\"a}hne}
}
@conference {jaehne1997,
	title = {3D-Exploration mit einer sich bewegenden Kamera},
	booktitle = {Bildverarbeitung{\textquoteright}97, Forschen, Entwickeln, Anwenden},
	year = {1997},
	publisher = {Technische Akademie Esslingen},
	organization = {Technische Akademie Esslingen},
	doi = {10.5281/zenodo.14338},
	author = {Bernd J{\"a}hne and Helmut Herrmann},
	editor = {Ahlers, R. -J.}
}
@conference {hering1997,
	title = {A comprehensive study of algorithms for multidimensional flow field diagnostics},
	booktitle = {Proc. Optical 3D Measurement Techniques IV, Zurich, Sept. 29 - Oct. 2, 1997},
	year = {1997},
	pages = {436--443},
	publisher = {Wichmann},
	organization = {Wichmann},
	author = {Frank Hering and Horst Hau{\ss}ecker and Jochen Dieter and T. Netzsch and Bernd J{\"a}hne},
	editor = {A. Gr{\"u}n and H. Kahmen}
}
@book {jaehne1997h,
	title = {Digital Image Processing - Concepts, Algorithms, and Scientific Applications},
	year = {1997},
	note = {Includes CD-ROM},
	publisher = {Springer},
	organization = {Springer},
	edition = {4},
	doi = {10.1007/978-3-662-03477-4},
	url = {http://d-nb.info/950918016},
	author = {Bernd J{\"a}hne}
}
@book {jaehne1997g,
	title = {Digitale Bildverarbeitung},
	year = {1997},
	note = {Mit CD-ROM},
	publisher = {Springer},
	organization = {Springer},
	edition = {4},
	doi = {10.1007/978-3-662-06733-8},
	url = {http://d-nb.info/949866776},
	author = {Bernd J{\"a}hne}
}
@conference {geissler1997,
	title = {Laboratory and inshore measurements of bubble size distributions},
	booktitle = {Proc. Natural Physical Processes associated with Sea Surface Sound, Southampton, July 21--24, 1997},
	year = {1997},
	pages = {147--154},
	author = {Peter Gei{\ss}ler and Bernd J{\"a}hne},
	editor = {T. G. Leighton}
}
@conference {dieter1997,
	title = {Measurements of slope statistics on a wind driven water surface},
	booktitle = {Optical 3D Measurement Techniques 4 - Applications in architecture, quality control, robotics, navigation, medical imaging and animation},
	year = {1997},
	publisher = {Wichmann},
	organization = {Wichmann},
	author = {Jochen Dieter and Lauer, Hermann and Bernd J{\"a}hne and A. Gr{\"u}n},
	editor = {H. Kahmen}
}
@conference {geissler1997a,
	title = {A multi-camera system for in-shore measurements of bubble size distributions beneath breaking waves},
	booktitle = {Optical 3-D Measurement Techniques IV, Zurich, Sept. 29 - Oct. 2, 1997},
	year = {1997},
	pages = {251--258},
	publisher = {Wichmann},
	organization = {Wichmann},
	author = {Peter Gei{\ss}ler and Bernd J{\"a}hne},
	editor = {A. Gr{\"u}n and H. Kahmen}
}
@conference {balschbach1997,
	title = {Multichannel shape from shading techniques for reconstruction of specular surfaces},
	booktitle = {Tagungsband Herbsttagung des Graduiertenkollegs "3D Bildanalyse und -synthese"},
	year = {1997},
	publisher = {H.-P. Seidel, B. Girod, H. Niemann (Hrsg.)},
	organization = {H.-P. Seidel, B. Girod, H. Niemann (Hrsg.)},
	author = {G{\"u}nther Balschbach and J. Klinke and Bernd J{\"a}hne}
}
@conference {scharr1997,
	title = {Numerische Isotropieoptimierung von FIR-Filtern mittels Quergl{\"a}ttung},
	booktitle = {Proceedings of the 19th DAGM Symposium on Pattern Recognition, Braunschweig},
	year = {1997},
	pages = {199--208},
	doi = {10.1007/978-3-642-60893-3_39},
	author = {Hanno Scharr and K{\"o}rkel, S. and Bernd J{\"a}hne},
	editor = {E. Paulus and F. M. Wahl}
}
@article {hering1997a,
	title = {Particle tracking velocimetry beneath water waves. Part I: visualization and tracking algorithms},
	journal = {Exp. Fluids},
	volume = {23},
	number = {6},
	year = {1997},
	pages = {472--482},
	abstract = {A novel particle tracking system working with a high particle concentration for the measurement of flow fields beneath water waves is described. It features a 1-4 cm thick light sheet parallel to the main wave propagation direction so that the seeding particles stay long enough in the illuminated area to enable tracking over several wave periods. An area of up to 14.0x10.0 cm2 is observed by a CCD camera with up to 200 fields/s. The polychromatic scattering theory of small particles in a light sheet illumination is investigated, enabling the segmentation of individual particles at high particle concentration.},
	doi = {10.1007/s003480050137},
	author = {Frank Hering and Dietmar Wierzimok and Carsten Leue and Bernd J{\"a}hne}
}
@conference {jaehne1997f,
	title = {Performance characteristics of low-level motion estimators in spatiotemporal images},
	booktitle = {DAGM-Workshop Performance Characteristics and Quality of Computer Vision Algorithms, Braunschweig, September 18, 1997},
	year = {1997},
	publisher = {Institute of Photogrammetry, Univ.\ Bonn},
	organization = {Institute of Photogrammetry, Univ.\ Bonn},
	author = {Bernd J{\"a}hne and W. F{\"o}rstner}
}
@book {jaehne1997c,
	title = {Practical Handbook on Image Processing for Scientific Applications},
	year = {1997},
	publisher = {CRC-Press, Boca Raton, FL, USA},
	organization = {CRC-Press, Boca Raton, FL, USA},
	author = {Bernd J{\"a}hne}
}
@conference {reinecke1997a,
	title = {Rekonstruktion von Schreiberkurven},
	booktitle = {Mustererkennung 1997},
	year = {1997},
	pages = {527--536},
	publisher = {Springer},
	organization = {Springer},
	author = {Reinecke, H. and N. L. Fantana and Horst Hau{\ss}ecker and Bernd J{\"a}hne},
	editor = {E. Paulus and F. M. Wahl}
}
@incollection {liss1997,
	title = {Report Group 1 - Physical processes in the microlayer and the air-sea exchange of trace gases},
	year = {1997},
	pages = {1--33},
	publisher = {Cambridge University Press},
	doi = {10.1017/CBO9780511525025.002},
	author = {Peter S. Liss and A. J. Watson and E. J. Bock and Bernd J{\"a}hne and William E. Asher and Nelson M. Frew and L. Hasse and Gerald M. Korenowski and L. Merlivat and L. F. Phillips and P. Schl{\"u}ssel and D. K. Woolf},
	editor = {Peter S. Liss and Robert A. Duce}
}
@conference {jaehne1997j,
	title = {The research unit (Forschergruppe) Image Sequence Processing to Study Dynamical Processes},
	booktitle = {Proc.\ 3D Image Analysis and Synthesis{\textquoteright}97, Erlangen (Germany), November 17--18, 1997},
	year = {1997},
	pages = {107--114},
	publisher = {infix},
	organization = {infix},
	author = {Bernd J{\"a}hne and Horst Hau{\ss}ecker and Ulrich Platt and Ulrich Schurr and Mark Stitt},
	editor = {Hans-Peter Seidel and B. Girod and H. Niemann}
}
@article {jaehne1997e,
	title = {SIMD-Bildverarbeitungsalgorithmen mit dem Multimedia Extension-Instruktionssatz (MMX) von Intel},
	journal = {Automatisierungstechnik},
	volume = {10},
	number = {5},
	year = {1997},
	pages = {453--460},
	doi = {10.1524/auto.1997.45.10.453},
	author = {Bernd J{\"a}hne}
}
@conference {jaehne1997k,
	title = {Softwarekonzepte und Algorithmen f{\"u}r die 3D-Bildverarbeitung},
	booktitle = {4. ABW Workshop, TA Esslingen 22.--23.01.1997},
	year = {1997},
	doi = {10.5281/zenodo.14324},
	author = {Bernd J{\"a}hne and Helmut Herrmann}
}
@conference {haussecker1997,
	title = {A tensor approach for precise computation of dense displacement vector fields},
	booktitle = {Proceedings of the 19th DAGM Symposium on Pattern Recognition, Braunschweig},
	year = {1997},
	note = {DAGM award},
	pages = {199--208},
	publisher = {Springer},
	organization = {Springer},
	doi = {10.1007/978-3-642-60893-3_20},
	author = {Horst Hau{\ss}ecker and Bernd J{\"a}hne},
	editor = {E. Paulus and F. M. Wahl}
}
@conference {geissler1996,
	title = {A 3D-sensor for the measurement of particle concentration from image sequences},
	booktitle = {Proc. 18th Int. Congr. for Photogrammetry and Remote Sensing},
	volume = {31},
	number = {B5},
	year = {1996},
	pages = {194--199},
	doi = {10.5281/zenodo.14895},
	url = {http://www.isprs.org/proceedings/XXXI/congress/part5/},
	author = {Peter Gei{\ss}ler and Bernd J{\"a}hne and P. Waldh{\"a}usl},
	editor = {K. Kraus}
}
@conference {waas1996,
	title = {Combined height/slope/curvature measurements of short ocean wind waves},
	booktitle = {Proc.\ The Air-Sea Interface, Radio and Acoustic Sensing, Turbulence and Wave Dynamics, Marseille, 24--30. June 1993},
	year = {1996},
	pages = {383--388},
	publisher = {RSMAS, University of Miami},
	organization = {RSMAS, University of Miami},
	doi = {10.5281/zenodo.14000},
	author = {Stefan Waas and Bernd J{\"a}hne},
	editor = {M. A. Donelan and W. H. Hui and W. J. Plant}
}
@conference {hering1996b,
	title = {Combined wave and flow field visualization for investigation of short-wave/long-wave interaction},
	booktitle = {Proc.\ The Air-Sea Interface, Radio and Acoustic Sensing, Turbulence and Wave Dynamics, Marseille, 24--30. June 1993},
	year = {1996},
	pages = {133--138},
	publisher = {RSMAS, University of Miami},
	organization = {RSMAS, University of Miami},
	doi = {10.5281/zenodo.14002},
	author = {Frank Hering and Dietmar Wierzimok and W. K. Melville and Bernd J{\"a}hne},
	editor = {M. A. Donelan and W. H. Hui and W. J. Plant}
}
@conference {koehler1996,
	title = {Detection of particle movements at soil interfaces due to changing hydraulic load conditions, localised by a digital image processing technique},
	booktitle = {Proc. Geofilters 1996, Montreal},
	year = {1996},
	publisher = {Ecole Polytechnique Montreal},
	organization = {Ecole Polytechnique Montreal},
	author = {H.-J. K{\"o}hler and Horst Hau{\ss}ecker and Bernd J{\"a}hne},
	editor = {Lafleur, J. and Rollin, A. L.}
}
@conference {muensterer1996a,
	title = {A fluorescence technique to measure concentration profiles in the aqueous mass boundary layer},
	booktitle = {Proc.\ The Air-Sea Interface, Radio and Acoustic Sensing, Turbulence and Wave Dynamics, Marseille, 24--30. June 1993},
	year = {1996},
	pages = {517--522},
	publisher = {RSMAS, University of Miami},
	organization = {RSMAS, University of Miami},
	doi = {10.5281/zenodo.13995},
	author = {Thomas M{\"u}nsterer and Bernd J{\"a}hne},
	editor = {M. A. Donelan and W. H. Hui and W. J. Plant}
}
@conference {scholz1996,
	title = {In-situ determination of cell concentration in bioreactors with a new depth-from-focus technique},
	booktitle = {Proc.\ Optical 3-D Measurement Techniques IV, Zurich, Sept. 29 - Oct. 2, 1997},
	year = {1996},
	pages = {392--399},
	author = {Thomas Scholz and Bernd J{\"a}hne and H. Suhr and G. Wehnert and P. Geissler and K. Schneider}
}
@conference {jaehne1996b,
	title = {Measurements of the modulation of short waves from image sequences},
	booktitle = {Proc.\ The Air-Sea Interface, Radio and Acoustic Sensing, Turbulence and Wave Dynamics, Marseille, 24--30. June 1993},
	year = {1996},
	pages = {389--394},
	publisher = {RSMAS, University of Miami},
	organization = {RSMAS, University of Miami},
	doi = {10.5281/zenodo.13996},
	author = {Bernd J{\"a}hne},
	editor = {M. A. Donelan and W. H. Hui and W. J. Plant}
}
@book {jaehne1996c,
	title = {Mustererkennung 1996, 18. DAGM-Symposium Heidelberg, 11.{\textendash}13. September 1996},
	year = {1996},
	publisher = {Springer},
	organization = {Springer},
	doi = {10.1007/978-3-642-80294-2},
	author = {Bernd J{\"a}hne and Peter Gei{\ss}ler and Horst Hau{\ss}ecker},
	editor = {Frank Hering}
}
@conference {hering1996a,
	title = {A novel system for the combined measurement of wave- and flow-fields beneath wind induced water waves},
	booktitle = {Proc. 18th Int. Congr. for Photogrammetry and Remote Sensing},
	volume = {31},
	number = {B5},
	year = {1996},
	pages = {231--236},
	doi = {10.5281/zenodo.14894},
	url = {http://www.isprs.org/proceedings/XXXI/congress/part5/},
	author = {Frank Hering and G{\"u}nther Balschbach and Bernd J{\"a}hne and P. Waldh{\"a}usl},
	editor = {K. Kraus}
}
@conference {jaehne1996a,
	title = {The role of active vision in exploring growth, transport, and exchange processes},
	booktitle = {Aktives Sehen in technischen und biologischen Systemen, Workshop der GI-Fachgruppe 1.0.4. Bildverstehen Hamburg, 3--4. December 1996},
	volume = {4},
	year = {1996},
	pages = {194--202},
	publisher = {infix},
	organization = {infix},
	author = {Bernd J{\"a}hne and Horst Hau{\ss}ecker and Frank Hering and G{\"u}nther Balschbach and J. Klinke and Martin Lell and Dominik Schmund and Michael Schultz and Ulrich Schurr and Mark Stitt and Ulrich Platt},
	editor = {B Mertsching}
}
@conference {leue1996a,
	title = {Segmentierung von Partikelbildern in der Str{\"o}mungsvisualisierung},
	booktitle = {Proceedings of 18th DAGM-Symposium Mustererkennung},
	year = {1996},
	pages = {118--129},
	doi = {10.1007/978-3-642-80294-2_13},
	author = {Carsten Leue and Peter Gei{\ss}ler and Bernd J{\"a}hne and Bernd J{\"a}hne and Peter Gei{\ss}ler and Horst Hau{\ss}ecker},
	editor = {Frank Hering and Frank Hering}
}
@article {schurr1996,
	title = {Structural and functional evidence for xylem-mediated water transport and high tranpiration in Agrobacterium tumefaciens-induced tumors of Ricinus communis},
	journal = {Botanica Acta},
	volume = {109},
	year = {1996},
	pages = {405--412},
	doi = {10.1111/j.1438-8677.1996.tb00590.x},
	author = {Ulrich Schurr and B. Schuberth and R. Aloni and K. S. Pradel and Dominik Schmund and Bernd J{\"a}hne and C. I. Ullrich}
}
@conference {haussecker1996a,
	title = {A tensor approach for local structure analysis in multi-dimensional images},
	booktitle = {3D Image Analysis and Synthesis},
	year = {1996},
	pages = {171--178},
	author = {Horst Hau{\ss}ecker and Bernd J{\"a}hne},
	editor = {Girod, G. and H. Niemann and Hans-Peter Seidel}
}
@conference {janssen1996,
	title = {The VIERS scatterometer algorithm},
	booktitle = {Proc.\ The Air-Sea Interface, Radio and Acoustic Sensing, Turbulence and Wave Dynamics, Marseille, 24--30. June 1993},
	year = {1996},
	pages = {749--754},
	publisher = {RSMAS, University of Miami},
	organization = {RSMAS, University of Miami},
	doi = {10.5281/zenodo.13994},
	author = {J. A. M. Janssen and C. J. Calkoen and van Halsema, D. and Bernd J{\"a}hne and P. A. E. M. Janssen and W. A. Oost and P. Snoeij and J. Vogelzang and H. Wallbrink},
	editor = {M. A. Donelan and W. H. Hui and W. J. Plant}
}
@conference {klinke1996a,
	title = {Wave number spectra of short wind waves: implications from laboratory studies},
	booktitle = {Proc.\ The Air-Sea Interface, Radio and Acoustic Sensing, Turbulence and Wave Dynamics, Marseille, 24--30. June 1993},
	year = {1996},
	pages = {367--372},
	publisher = {RSMAS, University of Miami},
	organization = {RSMAS, University of Miami},
	doi = {10.5281/zenodo.14001},
	author = {J. Klinke and Bernd J{\"a}hne},
	editor = {M. A. Donelan and W. H. Hui and W. J. Plant}
}
@proceedings {jaehne1995,
	title = {Air-Water Gas Transfer --- Selected Papers from the Third International Symposium on Air-Water Gas Transfer},
	year = {1995},
	publisher = {AEON},
	doi = {10.5281/zenodo.10571},
	url = {http://www.ub.uni-heidelberg.de/archiv/17063},
	author = {Bernd J{\"a}hne},
	editor = {E. C. Monahan}
}
@conference {schmundt1995a,
	title = {The circular wind wave facilities at the University of Heidelberg},
	booktitle = {Air-Water Gas Transfer - Selected papers from the Third International Symposium on Air-Water Gas Transfer},
	year = {1995},
	pages = {505--516},
	publisher = {AEON},
	organization = {AEON},
	doi = {10.5281/zenodo.10404},
	author = {Dominik Schmund and Thomas M{\"u}nsterer and Lauer, H. and Bernd J{\"a}hne and Bernd J{\"a}hne},
	editor = {E. C. Monahan}
}
@conference {vliet1995,
	title = {Delft Hydraulics Large Wind-Wave Flume},
	booktitle = {Air-Water Gas Transfer---Selected Papers from the Third International Symposium of Air--Water Gas Transfer in Heidelberg},
	year = {1995},
	pages = {499--502},
	publisher = {AEON},
	organization = {AEON},
	doi = {10.5281/zenodo.10402},
	author = {van Vliet, P. and Frank Hering and Bernd J{\"a}hne and Bernd J{\"a}hne},
	editor = {E. C. Monahan}
}
@conference {geissler1995b,
	title = {Depth-from-Focus Verfahren zur absoluten Gr{\"o}{\ss}en- und Konzentrationsbestimmung kleiner Teilchen},
	booktitle = {Bildverarbeitung{\textquoteright}95 - Forschen, Entwickeln, Anwenden},
	year = {1995},
	pages = {365--380},
	publisher = {Technische Akademie Esslingen},
	organization = {Technische Akademie Esslingen},
	doi = {10.5281/zenodo.14710},
	author = {Peter Gei{\ss}ler and Thomas Scholz and Bernd J{\"a}hne and Schmidt, C. and H. Suhr and G. Wehnert},
	editor = {Ahlers, R. -J.}
}
@conference {bock1995b,
	title = {Description of the science plan for the April 1995 CoOP experiment, {\textquoteleft}gas transfer in coastal waters{\textquoteright}, performed from the research vessel New Horizon},
	booktitle = {Air-Water Gas Transfer, Selected Papers, 3rd Intern. Symp. on Air-Water Gas Transfer},
	year = {1995},
	pages = {801--810},
	publisher = {AEON},
	organization = {AEON},
	doi = {10.5281/zenodo.10408},
	author = {E. J. Bock and J. B. Edson and Nelson M. Frew and A. Karachintsev and W. R. McGilles and R. K. Nelson and K. Hansen and Bernd J{\"a}hne and T. Hara and B. M. Uz and Bernd J{\"a}hne and Jochen Dieter and J. Klinke and Horst Hau{\ss}ecker},
	editor = {E. C. Monahan}
}
@book {jaehne1995d,
	title = {Digital Image Processing --- Concepts, Algorithms, and Scientific Applications},
	year = {1995},
	publisher = {Springer},
	organization = {Springer},
	edition = {3},
	doi = {10.1007/978-3-662-03174-2},
	url = {http://d-nb.info/945151500},
	author = {Bernd J{\"a}hne}
}
@conference {muensterer1995,
	title = {Dual-tracer measurements of concentration profiles in the aqueous mass boundary layer},
	booktitle = {Air-water Gas Transfer, Selected Papers from the Third International Symposium on Air--Water Gas Transfer},
	year = {1995},
	pages = {637--648},
	publisher = {AEON},
	organization = {AEON},
	doi = {10.5281/zenodo.10406},
	author = {Thomas M{\"u}nsterer and Hans J{\"u}rgen Mayer and Bernd J{\"a}hne and Bernd J{\"a}hne},
	editor = {E. C. Monahan}
}
@conference {haussecker1995d,
	title = {Effiziente Filterstrukturen auf Mehrgitter-Datenstrukturen},
	booktitle = {Bildverarbeitung{\textquoteright}95 - Forschen, Entwickeln, Anwenden},
	year = {1995},
	pages = {43--57},
	publisher = {Technische Akademie Esslingen},
	organization = {Technische Akademie Esslingen},
	doi = {10.5281/zenodo.14709},
	author = {Horst Hau{\ss}ecker and Bernd J{\"a}hne and H.-J. K{\"o}hler},
	editor = {Ahlers, R. -J.}
}
@conference {hering1995d,
	title = {Enhanced turbulence beneath short wind-induced water waves as derived from Lagrangian flow fields},
	booktitle = {IAPSO Proceedings, XXI General Assembly, Honolulu, Hawai, August 1995, PS-10 Spatial Structure of Short Ocean Waves},
	number = {19},
	year = {1995},
	pages = {386},
	abstract = {Breaking waves and wind stress are a primary source for near-surface turbulence. Particle Tracking Velocimetry (PTV) was used developed to study turbulence beneath short wind-induced waterwaves at the circular wind-wave facility of the Institute for Environmental Physics. A thick light sheet (1-4 cm) was applied to illuminate small polystyrol seeding particles. The depth of the light sheet was chosen such that the particles stay long enough in the illuminated area to enable tracking over several wave periods. The flow field is observed by a digital CCD camera. Recording image sequences at up to 200 Hz allow an extensive study of the flow field. An automatic tracking algorithm was developed for the evaluation of the trajectories. Lagrangian flow field measurements offer an ideal approach to the study of drift profiles in the turbulent wave region, in addition yielding the thickness of that layer. Also bulk velocity and surface velocities can be derived. A measure for the turbulence was gained by the calculation of the friction velocity profile by correlating horizontal and vertical velocity components (eddy correlation technique). These profiles show a very interesting behavior. While the friction velocity profile is constant in the bulk, an abrupt enhancement of Reynolds stress from the bulk towards the water surface up to a factor of 10 is observed. The enhanced dissipation of kinetic energy beneath strong-breaking surface waves under fetch conditions was measured at Lake Ontario. Here, an enhancement dissipation factor of 5-60 was found. Our measurements now indicate that micro-scale wave breaking is sufficient to produce significant turbulence enhancement. This result contributes significantly to the understanding of gas exchange through the aqueous boundary layer and indicates that wave/turbulence interaction deserves further more detailed attention.},
	author = {Frank Hering and Dietmar Wierzimok and Bernd J{\"a}hne}
}
@conference {hering1995c,
	title = {Flow- and wave-fields associated with micro-scale wave breaking as measured simultaneously by particle tracking and wave slope visualization},
	booktitle = {IAPSO Proceedings, XXI General Assembly, Honolulu, Hawai, August 1995, PS-10 Spatial Structure of Short Ocean Waves},
	number = {19},
	year = {1995},
	pages = {385},
	abstract = {Longuet-Higgins predicted the development of a capillary roller at the crest of a short gravity wave, being the consequence of the existence of parasitic capillaries, (Capillary rollers and bores, J. Fluid Mech, Jan. 1992). According to the theory any free surface, at which the tangential stress vanishes, a surface vorticity is produced. The mean vorticity at the edge of the Stokes layer is of the order of 2(ak) f, ak being the slope and f the radian frequency of the wave. Hence capillary waves, with a high value of a are accompanied by particular large vorticity feeding the vortex roler at the crest of a short gravity wave. This phenomenon has been investigated at the circular facility of the Institute for Environmental Physics. At the same location, simultaneous time series of wave slope images and the Lagrangian flow field were obtained using an integrated optical set-up, including particle-tracking and wave-slope instruments. The particle tracking measurement yields drift- and bulk-velocities, Reynold stresses and the vorticity distribution beneath the wave, while the imaging wave slope gauges gives the 2D-slope and the height of the waves. First results from the measurement campaign of early 1995 will be presented.},
	author = {Frank Hering and G{\"u}nther Balschbach and M. Menzel and Dietmar Wierzimok and Bernd J{\"a}hne}
}
@conference {haussecker1995a,
	title = {Heat as a proxy tracer for gas exchange measurements in the field: principles and technical realization},
	booktitle = {Air--Water Gas Transfer: Selected Papers from the Third International Symposium on Air--Water Gas Transfer},
	year = {1995},
	pages = {405--413},
	publisher = {AEON},
	organization = {AEON},
	doi = {10.5281/zenodo.10401},
	author = {Horst Hau{\ss}ecker and Reinelt, S. and Bernd J{\"a}hne and Bernd J{\"a}hne},
	editor = {E. C. Monahan}
}
@conference {netzsch1995,
	title = {A high-performance system for 3-dimensional particle tracking velocimetry in turbulent flow research using image sequences},
	booktitle = {Proc. ISPRS Intercommission workshop From Pixels to Sequences, Z{\"u}rich, March 22-24},
	volume = {30 Part 5W1},
	year = {1995},
	pages = {202--207},
	publisher = {Risc Books},
	organization = {Risc Books},
	doi = {10.5281/zenodo.14892},
	author = {T. Netzsch and Bernd J{\"a}hne},
	editor = {Baltsavias, E. P.}
}
@conference {haussecker1995c,
	title = {Horizontal and vertical spatial structures of turbulence beneath short wind waves},
	booktitle = {IAPSO Proceedings, XXI General Assembly, Honolulu, Hawai, August 1995, PS-10 Spatial Structure of Short Ocean Waves},
	number = {19},
	year = {1995},
	pages = {384},
	abstract = {A poorly understood aspect of surface-wave physics is wave dissipation. Wave breaking may lead to enhanced turbulence levels and consequently enhanced viscous dissipation at the smallest scales. Recent laboratory, field and modelling studies have provided preliminary evidence that wave breaking may lead to dissipation levels one to two orders of magnitude greater than those in the classical logarithmic layer. However, the experimental techniques to study these phenomena are not well developed, and consequently the turbulence structure near the water surface is poorly understood. A method is described to simultaneously investigate the horizontal and vertical structure of the turbulent flow and wave fields at the water surface and in an intersecting two-dimensional vertical plane. The technique combines an active infrared technique (CFT) in the horizontal plane with digital particle imaging velocimetry (DPIV) in the vertical plane. The DPIV uses a CCD camera in an underwater housing to track submerged particles moving through a pulsed vertical laser light sheet aligned in the wind direction. The CFT uses infrared radiators to heat up the upper 20 micrometres of the water column and observes the resulting heat patterns with an infrared camera. Both instruments use digital image processing techniques to compute the flow variables and images of the turbulent structures. These initial experiments were conducted in the large wind-wave channel at Delft Hydraulics, The Netherlands, in September/October, 1994. The images show a dramatic transition from laminar to turbulent flow with the onset of significant wave activity coincident with vorticity transport from the surface to deeper layers.},
	author = {Horst Hau{\ss}ecker and R. Shear and W. K. Melville and Bernd J{\"a}hne}
}
@conference {jaehne1995a,
	title = {An imaging optical technique for bubble measurements},
	booktitle = {Proc. Sea Surface Sound {\textquoteright}94},
	year = {1995},
	pages = {290--296},
	publisher = {World Scientific},
	organization = {World Scientific},
	doi = {10.1142/9789814447102_0019},
	author = {Bernd J{\"a}hne and Peter Gei{\ss}ler},
	editor = {Buckingham, M. J. and Potter, J. R.}
}
@conference {jaehne1995b,
	title = {Impact of quantitative visualization and image processing on the study of small-scale air-sea interaction},
	booktitle = {Air-Water Gas Transfer, Selected Papers, 3rd Intern. Symp. on Air-Water Gas Transfer},
	year = {1995},
	pages = {3--12},
	publisher = {AEON},
	organization = {AEON},
	doi = {10.5281/zenodo.10326},
	author = {Bernd J{\"a}hne and Bernd J{\"a}hne},
	editor = {E. C. Monahan}
}
@conference {scholz1995a,
	title = {In situ determination of cell concentration in bioreactors with a new depth from focus technique},
	booktitle = {Computer Analysis of Images and Patterns},
	volume = {970},
	year = {1995},
	pages = {392--399},
	publisher = {Springer},
	organization = {Springer},
	abstract = {A new depth-from-focus technique is introduced that requires only a single image to determine the distance of simple shaped objects from the focal plane. The technique has been applied to evaluate the concentration of cells in a bioreactor during a fermentation process. Since the low-intensity fluorescent light gathered by a light-amplifying camera results in images of low signal-to-noise ratio, an adaptive smoothing filter is used. A sharpness criterion derived from bandpass decomposition of the image in a Laplacian pyramid is used to define a virtual measuring volume. In this volume, process parameters such as cell concentration, cell size and intensity of cell fluorescence are evaluated. The technique is also suitable for other types of simple objects.},
	doi = {10.1007/3-540-60268-2_321},
	author = {Thomas Scholz and Bernd J{\"a}hne and H. Suhr and G. Wehnert and P. Geissler and K. Schneider}
}
@conference {haussecker1995,
	title = {In situ measurements of the air-sea gas transfer rate during the MBL/CoOP west coast experiment},
	booktitle = {Air-Water Gas Transfer - Selected Papers from the Third International Symposium on Air-Water Gas Transfer},
	year = {1995},
	pages = {775--784},
	publisher = {AEON},
	organization = {AEON},
	doi = {10.5281/zenodo.10407},
	author = {Horst Hau{\ss}ecker and Bernd J{\"a}hne and Bernd J{\"a}hne},
	editor = {E. C. Monahan}
}
@article {suhr1995a,
	title = {In-situ microscopy for on-line characterization of cell-populations in bioreactors, including concentration measurements by depth from focus},
	journal = {Biotechnology and Bioengineering},
	volume = {47},
	year = {1995},
	pages = {106--116},
	abstract = {A new technique is presented which allows the use of a front-end sensor head for in situ and on-line characterization of cell concentration and cell size during fermentation. An epifluorescence microscope is mounted in a port of a bioreactor viewing directly into the agitated broth. Still images from cells are generated using pulsed illumination. They are directly visualized on a monitor and used for automatic image analysis. The cell concentration and morphological information are determined by counting and evaluating the cell images with respect to their depth from focus characteristic. An in situ microscope was successfully tested during yeast fermentations and yielded results which correlated well with results from a hemocytometer.},
	doi = {10.1002/bit.260470113},
	author = {H. Suhr and G. Wehnert and K. Schneider and C. Bittner and Thomas Scholz and Peter Gei{\ss}ler and Bernd J{\"a}hne and T. Scheper}
}
@conference {haussecker1995b,
	title = {Interaction of short wind waves and turbulent shear flow as revealed by simultaneous wave slope and surface turbulence visualization},
	booktitle = {IAPSO Proceedings, XXI General Assembly, Honolulu, Hawai, August 1995, PS-10 Spatial Structure of Short Ocean Waves},
	number = {19},
	year = {1995},
	pages = {387},
	abstract = {Much work has been undertaken to understand the energy balance of wind waves, but almost no studies about the interaction between waves and turbulence are available up to now. In order to observe waves and surface turbulence simultaneously, measurements were performed in the large wind wave flume of Delft Hydraulics, The Netherlands. A new instrumental setup was used, combining an imaging slope gauge (ISG) with an active infrared technique (CFT). The ISG records time series of the two-dimensional slope within an image sector of 0.4m by 0.4m and a temporal resolution of 16ms. With the CFT, infrared radiators are used to force a constant heat flux through the water surface. The resulting surface temperature within the first 20 fim is observed with a Radiance 1 focal plane array IR camera in the 3-5um wavelenght range. With digital image processing techniques the dynamical behaviour of the water surface can be extracted. The resulting image sequences of temperature patterns are used to compute the 2-D flow field at the water surface. The flow field and wave slope image sequences reveal the significant influence of the turbulence distribution on the shape of the short wind waves. By analyzing properties of the wave field as wave length and phase velocity provided by the ISG the spatial structures of the surface waves can be compared with the scales of the turbulence structures and their dynamics.},
	author = {Horst Hau{\ss}ecker and Markus Beyer and Bernd J{\"a}hne}
}
@conference {geissler1995,
	title = {Measurements of bubble size distributions with an optical technique based on depth from focus},
	booktitle = {Air-Water Gas Transfer, Selected Papers, 3rd Intern. Symp. on Air-Water Gas Transfer},
	year = {1995},
	pages = {351--362},
	publisher = {AEON},
	organization = {AEON},
	doi = {10.5281/zenodo.10400},
	author = {Peter Gei{\ss}ler and Bernd J{\"a}hne and Bernd J{\"a}hne},
	editor = {E. C. Monahan}
}
@conference {hering1995b,
	title = {Measurements of enhanced turbulence in short wind-induced water waves},
	booktitle = {Air-Water Gas Transfer, Selected Papers, 3rd Intern. Symp. on Air-Water Gas Transfer},
	year = {1995},
	pages = {775--784},
	publisher = {AEON},
	organization = {AEON},
	doi = {10.5281/zenodo.10328},
	author = {Frank Hering and Dietmar Wierzimok and Bernd J{\"a}hne and Bernd J{\"a}hne},
	editor = {E. C. Monahan}
}
@conference {klinke1995,
	title = {Measurements of short ocean waves during the MBL ARI West Coast Experiment},
	booktitle = {Air-Water Gas Transfer, Selected Papers, 3rd Intern. Symp. on Air-Water Gas Transfer},
	year = {1995},
	pages = {165--173},
	publisher = {AEON},
	organization = {AEON},
	doi = {10.5281/zenodo.10399},
	author = {J. Klinke and Bernd J{\"a}hne and Bernd J{\"a}hne},
	editor = {E. C. Monahan}
}
@conference {dieter1995,
	title = {Measurements of velocity profiles in the aqueous boundary layer at a wind-driven water surface},
	booktitle = {Air-Water Gas Transfer, Selected Papers, 3rd Intern. Symp. on Air-Water Gas Transfer},
	year = {1995},
	pages = {145--152},
	publisher = {AEON},
	organization = {AEON},
	doi = {10.5281/zenodo.10393},
	author = {Jochen Dieter and Frank Hering and Roland Bremeyer and Bernd J{\"a}hne and Bernd J{\"a}hne},
	editor = {E. C. Monahan}
}
@conference {klinke1995b,
	title = {A new instrument for the optical measurement of the fine structure of the water surface in the field},
	booktitle = {IAPSO Proceedings, XXI General Assembly, Honolulu, Hawai, August 1995, PS-10 Spatial Structure of Short Ocean Waves},
	number = {19},
	year = {1995},
	pages = {388},
	abstract = {The measurement of the fine structure of the ocean surface constitutes a difficult task. Here, we describe the technical details of a new instrument that allows the full reconstruction of the water surface with sub-millimeter spatial resolution in areas of up to of 15cm x 20cm The single camera system is based on the imaging slope gauge used in previous laboratory experiments to obtain a single slope component of the water surface. The light source was modified such that two arrays of light emitting diodes (LEDs) are used to produce intensity gradients at right anglesJn order to obtain both slope components of the water surface with a monochrome CCD camera, the LED arrays are illuminated successively within a few milliseconds. The whole system is mounted on a the frame of a buoy which follows the orbital motion of the long waves and is critically damped to prevent instability in rougher conditions. Even at high wind speeds, the ambient wave field is not disturbed by the structure. The onboard computer for data acquisition and image processing is remotely controlled from a ship. Battery power allows free-floating operation for a duration of approximately eight hours. In addition to the optical wave slope gauge, the instrument contains a digital gyro sensor which collects stabilized pitch, roll, and magnetic azimuth data, a Young wind speed anemometer, as well as global positioning and temperature sensors.},
	author = {J. Klinke and Bernd J{\"a}hne}
}
@conference {balschbach1995,
	title = {A new instrument to measure steep wind-waves},
	booktitle = {IAPSO Proceedings, XXI General Assembly, Honolulu, Hawai, August 1995, PS-10 Spatial Structure of Short Ocean Waves},
	number = {19},
	year = {1995},
	pages = {387},
	abstract = {Current instruments to measure the spatial structure of short waves are limited to quite low slopes. Capillary waves, however, may show slopes well above one (45 degrees inclination). A new instrument has been designed to measure the spatial structure of steep capillary waves. It was designed to specifically address a number of basic questions: Is the limiting form for Crapper capillary waves ever reached? Can a bubble be trapped by such a wave? Do solitary capillary/gravity waves - as recently postulated by Longuet-Higgins - exist in wind/wave fields? The instrument uses the basic design as used in previous instruments of our research group but includes two important enhancements. By the use of a telecentric illumination and camera lens, the influence of wave height on the slope measurement is eliminated. Colored light is used to encode both slope components simultaneously and to correct for uneven intensity distribution in the light source and intensity losses by reflection at the water surface. This contribution describes the setup of the instrument and its calibration in detail. First results from the circular wind/wave facility at Heidelberg University are reported in a separate paper.},
	author = {G{\"u}nther Balschbach and M. Menzel and Bernd J{\"a}hne}
}
@conference {scheuermann1995,
	title = {Oberfl{\"a}chenkonturvermessung mikroskopischer Objekte durch Projektion statistischer Rauschmuster},
	booktitle = {Proc. 17. DAGM-Symposium Mustererkennung, Bielefeld, 13.-15. September 1995},
	year = {1995},
	pages = {319--326},
	author = {Scheuermann, T. and Pfundt, G. and Eyerer, P. and Bernd J{\"a}hne}
}
@conference {geissler1995a,
	title = {One-image depth-from-focus for concentration measurements},
	booktitle = {Proc. ISPRS Intercommission Workshop {\textquoteleft}From Pixels to Sequences{\textquoteright}, Zurich, March 22 - 24, 1995, In Int{\textquoteright}l Arch. of Photog. and Rem. Sens.},
	volume = {XXX-5W1},
	year = {1995},
	pages = {122--127},
	publisher = {RISC Books},
	organization = {RISC Books},
	doi = {10.5281/zenodo.14891},
	author = {Peter Gei{\ss}ler and Bernd J{\"a}hne},
	editor = {Baltsavias, E. P.}
}
@conference {hering1995a,
	title = {Particle tracking in space time sequences},
	booktitle = {Computer Analysis of Images and Patterns},
	volume = {970},
	year = {1995},
	pages = {294--301},
	publisher = {Springer},
	organization = {Springer},
	abstract = {A particle tracking technique at high particle concentration for the evaluation of flow fields beneath water waves is described. A 1-4 cm thick light sheet parallel to the main wave propagation direction was used to illuminate small polystyrol seeding particles. The depth of the light sheet was chosen such that the particles stay long enough in the illuminated area to enable tracking. An area of up to 14.0x10.0 cm2 is observed by a CCD camera. An automatic tracking algorithm is described to 800 particles/image, yielding both Lagrangian and Eulerian vector field. Test measurements show that the standard deviation for the velocity estimation is below 3\%.},
	doi = {10.1007/3-540-60268-2_309},
	author = {Frank Hering and Merle, M. and Dietmar Wierzimok and Bernd J{\"a}hne}
}
@conference {hering1995,
	title = {A robust technique for tracking particles over long image sequences},
	booktitle = {Proc. ISPRS Intercommission Workshop {\textquoteleft}From Pixels to Sequences{\textquoteright}, Zurich, March 22 - 24, 1995, In Int{\textquoteright}l Arch. of Photog. and Rem. Sens.},
	volume = {XXX-5W1},
	year = {1995},
	pages = {74--79},
	publisher = {RISC Books},
	organization = {RISC Books},
	doi = {10.5281/zenodo.14890},
	author = {Frank Hering and Merle, M. and Dietmar Wierzimok and Bernd J{\"a}hne},
	editor = {Baltsavias, E. P.}
}
@conference {klinke1995a,
	title = {Spatial measurement of short ocean waves during the MBL-ARI West Coast Experiment},
	booktitle = {IAPSO Proceedings, XXI General Assembly, Honolulu, Hawai, August 1995, PS-10 Spatial Structure of Short Ocean Waves},
	number = {19},
	year = {1995},
	pages = {390},
	abstract = {During the MBL-ARI West Coast Experiment in April 1995 a new instrument for the optical measurement of ocean waves in the capillary-gravity and capillary range will be deployed. The optical system is mounted on the frame of a wave follower, and provides digital images of the water surface gradient in an area of 15cm X 20cm with submillimeter resolution at sampling rates of up to lOOHz. From single gradient images, the height of the water surface is reconstructed, and from the time sequences, intermittent phenomena such as microscale wave breaking can be studied. The instrument will be used in conjunction with the scanning laser slope gauge on the LADAS research catamaran from Woods Hole Oceanographic Institute. The intercomparison of the data allows an accurate performance assessment of both systems.In addition to the surface gradient image sequences, long wave data, wind speeds, as well as air and water temperatures will be collected. We present first results from the MBL-ARI West Coast Experiment, including directional wave number spectra, directional wave number-frequency spectra, surface reconstructions, and 2-D slope distributions of short ocean waves.},
	author = {J. Klinke and Bernd J{\"a}hne}
}
@book {jaehne1996,
	title = {Technische Bildverarbeitung - Maschinelles Sehen},
	year = {1995},
	publisher = {Springer},
	organization = {Springer},
	doi = {10.1007/978-3-642-61403-3},
	url = {http://d-nb.info/94569895X},
	author = {Bernd J{\"a}hne and R. Massen and B. Nickolay and H. Scharfenberg}
}
@conference {frew1995a,
	title = {Variation of air--water gas transfer with wind stress and surface viscoelasticity},
	booktitle = {Air-water Gas Transfer, Selected Papers from the Third International Symposium on Air-Water Gas Transfer},
	year = {1995},
	pages = {529--541},
	publisher = {AEON},
	organization = {AEON},
	doi = {10.5281/zenodo.10405},
	author = {Nelson M. Frew and E. J. Bock and W. R. McGilles and A. Karachintsev and T. Hara and Thomas M{\"u}nsterer and Bernd J{\"a}hne and Bernd J{\"a}hne},
	editor = {E. C. Monahan}
}
@conference {jaehne1995e,
	title = {Vision for waves},
	booktitle = {IAPSO Proceedings, XXI General Assembly, Honolulu, Hawai, August 1995, PS-10 Spatial Structure of Short Ocean Waves},
	number = {19},
	year = {1995},
	pages = {391},
	abstract = {For almost a century, researchers have tried to use imaging techniques for spatial measurement of short wind waves. A comparative survey of these techniques is given. The early techniques were all based on stereo imaging, while more recently shape from reflection (Stilwell photography) and shape from refraction techniques such as laser scanning slope gauges and imaging surface gradient methods have been used by a number of researchers. Theoretical analysis and experimental evidence clearly show that the shape from refraction techniques are the most suitable method for spatial measurements of short gravity and capillary waves. Although these techniques give an unprecedented insight into the dynamics of short wind waves, only digital image processing techniques open the way for a quantitative analysis. A number of techniques beyond Fourier analysis including scale-space analysis, Hilbert transformation, and various advanced filter techniques are envisioned to have a major impact in the near future.},
	author = {Bernd J{\"a}hne}
}
@conference {jaehne1995c,
	title = {Zuverl{\"a}ssig, Schnell und Genau? - Bedeutung von Algorithmen in der Bildverarbeitung f{\"u}r die Praxis},
	booktitle = {Bildverarbeitung{\textquoteright}95 - Forschen, Entwickeln, Anwenden},
	year = {1995},
	pages = {3--14},
	publisher = {Technische Akademie Esslingen},
	organization = {Technische Akademie Esslingen},
	doi = {10.5281/zenodo.14708},
	author = {Bernd J{\"a}hne},
	editor = {Ahlers, R. -J.}
}
@conference {jaehne1994,
	title = {Analytical studies of low-level motion estimators in space-time images using a unified filter concept},
	booktitle = {Proc. Conference on Computer Vision and Pattern Recognition (CVPR {\textquoteright}94), Seattle, 20.-23. June 1994},
	year = {1994},
	pages = {229--236},
	doi = {10.1109/CVPR.1994.323834},
	author = {Bernd J{\"a}hne}
}
@article {jaehne1994a,
	title = {Bildverarbeitung f{\"u}r die Meeresforschung},
	journal = {Ruperto Carola},
	number = {3},
	year = {1994},
	pages = {10--15},
	doi = {10.5281/zenodo.14915},
	url = {http://www.uni-heidelberg.de/uni/presse/rc7/2.html},
	author = {Bernd J{\"a}hne}
}
@booklet {waas1994,
	title = {Combined height/slope/curvature measurements of short ocean wind waves},
	year = {1994},
	author = {Stefan Waas and Bernd J{\"a}hne}
}
@conference {jaehne1994b,
	title = {A comparative analytical study of low-level motion estimators in space-time images},
	booktitle = {Proc. 16. DAGM-Symposium Mustererkennung},
	year = {1994},
	doi = {10.5281/zenodo.14887},
	author = {Bernd J{\"a}hne}
}
@conference {jaehne1994c,
	title = {Depth from focus with one image},
	booktitle = {Proc. Conference on Computer Vision and Pattern Recognition (CVPR {\textquoteright}94), Seattle, 20.-23. June 1994},
	year = {1994},
	pages = {713--717},
	doi = {10.1109/CVPR.1994.323885},
	author = {Bernd J{\"a}hne and Peter Gei{\ss}ler}
}
@article {jaehne1994d,
	title = {Imaging of short ocean wind waves: a critical theoretical review},
	journal = {J. Opt. Soc. Am. A},
	volume = {11},
	year = {1994},
	pages = {2197--2209},
	abstract = {Optical techniques to measure the small-scale shape of the ocean surface, i.e., the short wind waves, are theoretically reviewed. The well-known shape-from-shading and shape-from-stereo paradigms from computer vision are applied to a specular reflecting surface such as the ocean surface and are used to study a variety of techniques. The analysis shows that most techniques for the imaging of short wind waves, such as Stilwell photography and various stereo techniques, have significant deficiencies. Stereophotography is plagued by insufficient height resolution for small waves and by the problem that, because of the specular nature of reflection at the water surface, features seen in one image are not necessarily found in the other (correspondence problem). Techniques based on light reflection (shape from reflection) are useful only for deriving wave-slope statistics, and techniques based on light refraction (shape from refraction) are found to be most suitable for wave slope imaging.},
	doi = {10.1364/JOSAA.11.002197},
	author = {Bernd J{\"a}hne and J. Klinke and Stefan Waas}
}
@conference {hausecker1994,
	title = {In-situ measurements of the air-sea gas transfer using heat as a proxy tracer},
	booktitle = {Proc. 2nd Inter. Conf. on Air-Sea Interaction and on Meteorology and Oceanography of the Coastal Zone, Lisbon, 22.--27. September 1994},
	year = {1994},
	author = {Horst Hau{\ss}ecker and Bernd J{\"a}hne}
}
@conference {beyer1994,
	title = {Laboratory studies of long-wave/short-wave interaction using wavelet analysis of space-time images},
	booktitle = {Proc. 2nd Inter. Conf. on Air-Sea Interaction and on Meteorology and Oceanography of the Coastal Zone, Lisbon, 22.--27. September 1994},
	year = {1994},
	author = {Markus Beyer and Bernd J{\"a}hne and W. K. Melville}
}
@conference {muensterer1994,
	title = {A LIF technique for the measurement of concentration profiles in the aqueous mass boundary layer},
	booktitle = {Proc.\ 7th Intern.\ Symp.\ on Appl.\ of Laser Techn.\ to Fluid Mechanics, Lisbon, Portugal, July 11.--14. 1994},
	volume = {II},
	year = {1994},
	pages = {29.4.1--5},
	author = {Thomas M{\"u}nsterer and Bernd J{\"a}hne}
}
@conference {klinke1994,
	title = {Measurements of the small-scale structure of the water surface with a new optical instrument},
	booktitle = {Proc. 2nd Inter. Conf. on Air-Sea Interaction and on Meteorology and Oceanography of the Coastal Zone, Lisbon, 22.--27. September 1994},
	year = {1994},
	author = {J. Klinke and Bernd J{\"a}hne}
}
@conference {scholz1994,
	title = {A new depth from focus technique for in situ determination of cell concentration in bioreactors},
	booktitle = {Proc. 16. DAGM-Symposium Mustererkennung},
	year = {1994},
	pages = {145--150},
	doi = {10.5281/zenodo.14888},
	author = {Thomas Scholz and Bernd J{\"a}hne and H. Suhr and G. Wehnert and Peter Gei{\ss}ler and K. Schneider}
}
@booklet {jaehne1993i,
	title = {Air-sea gas exchange},
	year = {1993},
	author = {Bernd J{\"a}hne}
}
@conference {geissler1993a,
	title = {Depth-from-focus zur Bestimmung der Konzentration und Gr{\"o}{\ss}e von Gasblasen},
	booktitle = {Proc. 15. DAGM-Symposium Mustererkennung},
	year = {1993},
	note = {DAGM award},
	pages = {560--567},
	publisher = {Springer},
	organization = {Springer},
	author = {Peter Gei{\ss}ler and Bernd J{\"a}hne and S. J. P{\"o}ppl},
	editor = {H. Handels}
}
@book {jaehne1993h,
	title = {Digital Image Processing --- Concepts, Algorithms, and Scientific Applications},
	year = {1993},
	publisher = {Springer},
	organization = {Springer},
	edition = {2},
	doi = {10.1007/978-3-662-21817-4},
	url = {http://d-nb.info/931193567},
	author = {Bernd J{\"a}hne}
}
@book {jaehne1993g,
	title = {Digitale Bildverarbeitung},
	year = {1993},
	publisher = {Springer},
	organization = {Springer},
	edition = {3},
	doi = {10.1007/978-3-662-22662-9},
	url = {http://d-nb.info/931125731},
	author = {Bernd J{\"a}hne}
}
@conference {haussecker1993a,
	title = {Ein Mehrgitterverfahren zur Bewegungssegmentierung in Bildfolgen},
	booktitle = {Proc. 15. DAGM-Symposium Mustererkennung},
	year = {1993},
	pages = {27--31},
	doi = {10.5281/zenodo.14549},
	author = {Horst Hau{\ss}ecker and Bernd J{\"a}hne}
}
@conference {netzsch1993,
	title = {Ein schnelles Verfahren zur L{\"o}sung des Stereokorrepondenzproblems bei der 3D-Particle Tracking Velocimetry},
	booktitle = {Proc. 15. DAGM-Symposium Mustererkennung},
	year = {1993},
	author = {T. Netzsch and Bernd J{\"a}hne}
}
@conference {jaehne1993,
	title = {Image sequence analysis of ocean wind waves},
	booktitle = {Imaging in Transport Processes},
	year = {1993},
	pages = {257--268},
	publisher = {Begell House Publishers},
	organization = {Begell House Publishers},
	url = {http://www.dl.begellhouse.com/references/1bb331655c289a0a,36adf33e6f249361.html},
	author = {Bernd J{\"a}hne and J. Klinke and Peter Gei{\ss}ler and Frank Hering},
	editor = {S. Sideman and K. Hijikata}
}
@conference {jaehne1993a,
	title = {Imaging of gas transfer across gas/liquid interfaces},
	booktitle = {Imaging in Transport Processes},
	year = {1993},
	pages = {247--256},
	publisher = {Begell House Publishers},
	organization = {Begell House Publishers},
	url = {http://www.dl.begellhouse.com/references/1bb331655c289a0a,36adf33e6f249361.html},
	author = {Bernd J{\"a}hne},
	editor = {S. Sideman and K. Hijikata}
}
@conference {jaehne1993c,
	title = {New trends in image processing hard- and software},
	booktitle = {Proceedings Image Analysis for Pulp and Paper Research and Production},
	year = {1993},
	note = {Invited},
	pages = {1--12},
	author = {Bernd J{\"a}hne}
}
@conference {jaehne1993d,
	title = {Shape from shading techniques for short ocean wind waves},
	booktitle = {Imaging in Transport Processes},
	year = {1993},
	pages = {269--281},
	publisher = {Begell House Publishers},
	organization = {Begell House Publishers},
	url = {http://www.dl.begellhouse.com/references/1bb331655c289a0a,36adf33e6f249361.html},
	author = {Bernd J{\"a}hne and Stefan Waas and J. Klinke},
	editor = {S. Sideman and K. Hijikata}
}
@book {jaehne1993e,
	title = {Spatio-Temporal Image Processing: Theory and Scientific Applications},
	volume = {751},
	year = {1993},
	publisher = {Springer-Verlag},
	organization = {Springer-Verlag},
	doi = {10.1007/3-540-57418-2},
	author = {Bernd J{\"a}hne}
}
@conference {janssen1993,
	title = {The VIERS scatterometer algorithm},
	booktitle = {Proc. The Air-Sea Interface, Radio and Acoustic Sensing, Turbulence and Wave Dynamics, Marseille, 24--30. June 1993},
	year = {1993},
	pages = {749--754},
	publisher = {University of Miami},
	organization = {University of Miami},
	doi = {10.5281/zenodo.13994},
	author = {J. A. M. Janssen and C. J. Calkoen and van Halsema, D. and Bernd J{\"a}hne and P. A. E. M. Janssen and W. A. Oost and P. Snoeij and J. Vogelzang and H. Wallbrink},
	editor = {M. A. Donelan and W. H. Hui and W. J. Plant}
}
@article {jaehne1993f,
	title = {Wellenamplitudenmessungen mittels videometrischer Bildverarbeitung},
	journal = {Mitteilungsblatt der Bundesanstalt f{\"u}r Wasserbau},
	volume = {70},
	year = {1993},
	pages = {27--62},
	author = {Bernd J{\"a}hne and H.-J. K{\"o}hler and Ralf Rath and Dietmar Wierzimok}
}
@conference {klinke1992,
	title = {2D wave number spectra of short wind waves: results from wind-wave facilities and extrapolation to the ocean},
	booktitle = {Optics of the Air-Sea Interface: Theory and Measurement},
	volume = {1749},
	year = {1992},
	pages = {245-257},
	doi = {10.1117/12.138853},
	author = {J. Klinke and Bernd J{\"a}hne},
	editor = {L. Estep}
}
@conference {jaehne1992a,
	title = {Calibration and accuracy of optical slope measurements for short wind waves},
	booktitle = {Optics of the Air-Sea Interface: Theory and Measurements},
	volume = {1749},
	year = {1992},
	pages = {222--233},
	doi = {10.1117/12.138851},
	author = {Bernd J{\"a}hne and H. Schultz},
	editor = {L. Estep}
}
@conference {waas1992a,
	title = {Combined slope-height measurements of short wind waves: first results from field and laboratory measurements},
	booktitle = {Optics of the Air-Sea Interface: Theory and Measurements},
	volume = {1749},
	year = {1992},
	pages = {295--306},
	doi = {10.1117/12.138858},
	author = {Stefan Waas and Bernd J{\"a}hne},
	editor = {L. Estep}
}
@conference {halsema1992,
	title = {Comparisons of backscattering calculations with measurements made in a large wind/wave flume},
	booktitle = {Proc. IGARSS{\textquoteright}92},
	volume = {2},
	year = {1992},
	pages = {1451--1453},
	doi = {10.1109/IGARSS.1992.578480},
	author = {van Halsema, D. and C. J. Calkoen and W. A. Oost and P. Snoeij and J. Vogelzang and Bernd J{\"a}hne}
}
@conference {jaehne1992,
	title = {A critical theoretical review of optical techniques for short ocean wave measurements},
	booktitle = {Optics of the Air-Sea Interface: Theory and Measurements},
	volume = {1749},
	year = {1992},
	pages = {204--215},
	doi = {10.1117/12.138849},
	author = {Bernd J{\"a}hne and Stefan Waas and J. Klinke},
	editor = {L. Estep}
}
@conference {netzsch1992,
	title = {Dreidimensionale Messung turbulenter Str{\"o}mung mit Bildverarbeitung},
	booktitle = {Proc. 14. DAGM-Symposium zur Mustererkennung},
	year = {1992},
	pages = {150--153},
	publisher = {Springer},
	organization = {Springer},
	doi = {10.1007/978-3-642-77785-1_18},
	author = {T. Netzsch and Bernd J{\"a}hne},
	editor = {Fuchs, S. and Hoffmann, R.}
}
@conference {snoeij1992,
	title = {Microwave backscatter measurements made from the Dutch Ocean Research Tower {\textquoteright}Noordwijk{\textquoteright} compared with model predictions},
	booktitle = {Proc. IGARSS{\textquoteright}92},
	year = {1992},
	doi = {10.1109/IGARSS.1992.576808},
	author = {P. Snoeij and van Halsema, D. and W. A. Oost and C. J. Calkoen and Bernd J{\"a}hne and J. Vogelzang}
}
@conference {riemer1991a,
	title = {Bildfolgenanalyse im Orts-Wellenzahl-Raum},
	booktitle = {Proc. 13. DAGM-Symposium zur Mustererkennung 1991, M{\"u}nchen},
	year = {1991},
	note = {DAGM main award},
	doi = {10.1007/978-3-662-08896-8_28},
	author = {Riemer, K. and Thomas Scholz and Bernd J{\"a}hne}
}
@conference {snoeij1991,
	title = {Comparison of microwave backscatter measurements and small-scale surface wave measurements made from the Dutch ocean research tower {\textquoteright}Noordwijk{\textquoteright}},
	booktitle = {Proceedings IGARSS {\textquoteright}91},
	volume = {3},
	year = {1991},
	pages = {1289--1292},
	doi = {10.1109/IGARSS.1991.579315},
	author = {P. Snoeij and van Halsema, D. and W. A. Oost and C. J. Calkoen and J. Vogelzang and Bernd J{\"a}hne}
}
@book {jaehne1991c,
	title = {Digital Image Processing - Concepts, Algorithms, and Scientific Applications},
	year = {1991},
	publisher = {Springer},
	organization = {Springer},
	doi = {10.1007/978-3-662-11565-7},
	url = {http://d-nb.info/911090657},
	author = {Bernd J{\"a}hne}
}
@book {jaehne1991b,
	title = {Digitale Bildverarbeitung},
	year = {1991},
	publisher = {Springer},
	organization = {Springer},
	edition = {2},
	doi = {10.1007/978-3-662-06734-5},
	url = {http://d-nb.info/910564256},
	author = {Bernd J{\"a}hne}
}
@conference {halsema1991,
	title = {Dual-polarized scatterometer measurements of wind and mechanically generated waves in a very large wind/wave flume, the VIERS-1 project},
	booktitle = {Proc.\ 5th Int. Coll. Physical Measurements and Signatures in Remote Sensing, Courchevel, France},
	volume = {ESA SP-319},
	year = {1991},
	pages = {247--252},
	author = {van Halsema, D. and C. J. Calkoen and W. A. Oost and P. Snoeij and J. Vogelzang and Bernd J{\"a}hne}
}
@conference {calkoen1991a,
	title = {Evaluation of a two-scale model using extensive radar backscatter and wave measurements in a large wind-wave flume},
	booktitle = {Proceedings IGARSS {\textquoteright}91},
	volume = {2},
	year = {1991},
	pages = {885--888},
	doi = {10.1109/IGARSS.1991.580259},
	author = {Bernd J{\"a}hne and Bernd J{\"a}hne},
	editor = {C. J. Calkoen and P. Snoeij and van Halsema, D. and J. Vogelzang and W. A. Oost and C. J. Calkoen and P. Snoeij and J. Vogelzang and W. A. Oost and van Halsema, D.}
}
@conference {jaehne1991,
	title = {From mean fluxes to a detailed experimental investigation of the gas transfer process},
	booktitle = {2nd International Symposium on Gas Transfer at Water Surfaces - Air--Water Mass Transfer, Minneapolis 1990},
	year = {1991},
	pages = {244--256},
	publisher = {ASCE},
	organization = {ASCE},
	doi = {10.5281/zenodo.12204},
	author = {Bernd J{\"a}hne},
	editor = {Wilhelms, S. C. and John S. Gulliver}
}
@conference {wierzimok1991,
	title = {Measurement of wave-induced turbulent flow structure using digital image sequence analysis},
	booktitle = {Air-Water Mass Transfer, selected papers from the 2nd International Symposium on Gas Transfer at Water Surfaces, September 11--14, 1990, Minneapolis, Minnesota},
	year = {1991},
	pages = {200--209},
	publisher = {ASCE},
	organization = {ASCE},
	doi = {10.5281/zenodo.12206},
	author = {Dietmar Wierzimok and Bernd J{\"a}hne},
	editor = {Wilhelms, S. C. and John S. Gulliver}
}
@conference {halsema1991a,
	title = {Modulation of the microwave backscatter by long gravity waves as measured in a very large wind/wave flume},
	booktitle = {Proc. IGARSS {\textquoteright}91},
	volume = {3},
	year = {1991},
	pages = {1293--1296},
	doi = {10.1109/IGARSS.1991.579316},
	author = {van Halsema, D. and P. Snoeij and C. J. Calkoen and W. A. Oost and J. Vogelzang and Bernd J{\"a}hne}
}
@conference {jaehne1991a,
	title = {New experimental results on the parameters influencing air-sea gas exchange},
	booktitle = {Air-Water Mass Transfer, selected papers from the 2nd International Symposium on Gas Transfer at Water Surfaces, September 11--14, 1990, Minneapolis, Minnesota},
	year = {1991},
	pages = {582--592},
	publisher = {ASCE},
	organization = {ASCE},
	doi = {10.5281/zenodo.12203},
	author = {Bernd J{\"a}hne},
	editor = {Wilhelms, S. C. and John S. Gulliver}
}
@conference {wierzimok1990a,
	title = {Automatic particle tracking beneath a wind-stressed wavy water surface with image processing},
	booktitle = {Proc.\ 5th Int. Symposium Flow Visualization, Praque 1989},
	year = {1990},
	pages = {943--956},
	doi = {dx.doi.org/10.5281/zenodo.14004},
	author = {Dietmar Wierzimok and Bernd J{\"a}hne}
}
@conference {snoeij1990a,
	title = {Dual-polarized scatterometer measurements of generated Wind and Gravity Wave in a Very Large Wind/Wave Tank},
	booktitle = {Proc. IGARSS{\textquoteright}90},
	year = {1990},
	pages = {2157--2160},
	doi = {10.1109/IGARSS.1990.688958},
	author = {P. Snoeij and C. J. Calkoen and W. A. Oost and van Halsema, D. and J. Vogelzang and Bernd J{\"a}hne}
}
@conference {snoeij1990,
	title = {A high resolution scatterometer for radar backscatter measurements of wind generated waves in wind/wave tanks},
	booktitle = {European Micro Wave Conference 1990},
	year = {1990},
	abstract = {In February 1988, combined measurements of microwave backscatter, wind, waves and gas exchange have been carried out in the large Delft Hydraulics wind/wave tank, with wind generated waves. In March 1989 a second exaperiment took place in the huge outdoor wave tank, the Delta tank, with wind generated waves and mechanically generated waves. These experiments were perfonned in the framework of the VIERS-1 project. In this project a number of Dutch and German institutes cooperate. Main objective is to increase the knowledge about the physics involved in the interaction of microwaves and the ocean surface and, from that point, to an improvement of the algorithms used for determination of wind speed and direction from satelliteborne microwave scatterometers. A second objective is to study the relation between the gas exchange at the water surface and the microwave backscatter. To achieve these objectives two wind/wave tank experiments and one ocean based platform experiment are scheduled. In this paper, the VIERS-l program will be outlined. The features of a specially designed high resolution scatterometer will be described and some results of both tank expermnents will be shown.},
	doi = {10.1109/EUMA.1990.336154},
	author = {P. Snoeij and J. Vogelzang and C. J. Calkoen and W. A. Oost and van Halsema, D. and Bernd J{\"a}hne}
}
@conference {jaehne1990,
	title = {Motion determination in space-time images},
	booktitle = {Proc. Computer Vision -- ECCV 90, Lecture Notes in Computer Science 427},
	year = {1990},
	pages = {161--173},
	abstract = {A new approach to determine motion from multiple images of a sequence is presented. Motion is regarded as orientation in a three-dimensional space with one time and two space coordinates. The algorithm is analogous to an eigenvalue analysis of the inertia tensor. Besides the determination of the displacement vector field it allows the classification of four regions with regard to motion: a) constant regions, where no velocity determination is possible; b) edges, where the velocity component perpendicular to the edge is determined; c) corners, where both components of the velocity vector are calculated; d) motion discontinuities, which are used to mark the boundaries between objects moving with different velocities. The accuracy of the new algorithm has been tested with artificially generated image sequences with known velocity vector fields. An iterative refinement technique yields more accurate results than the usage of higher order approximations to the first spatial and temporal derivatives. Temporal smoothing significantly improves the velocity estimates in noisy images. Displacements between consecutive images can be computed with an accuracy well below 0.1 pixel distances.},
	doi = {10.1007/BFb0014862},
	author = {Bernd J{\"a}hne},
	editor = {Faugeras, O.}
}
@article {jaehne1990a,
	title = {Two-dimensional wave number spectra of small-scale water surface waves},
	journal = {J. Geophys. Res.},
	volume = {95},
	number = {C7},
	year = {1990},
	pages = {11531--11646},
	abstract = {Two-dimensional wave slope spectra have been measured in the large Delft wind-wave facility using an imaging optical technique and digital image processing. The data cover wavelengths from 0.4 to 24 cm and wind speeds (U 10) from 2.7 to 17.2 ms-1. The spectral densities of small gravity waves at higher wind speeds are proportional to k ^-3.5 and u*. Capillary-gravity and capillary waves show features which clearly manifest that the energy balance for these waves is much different from that for gravity waves. The degree of saturation is approximately constant at a given wind speed, but strongly increases with friction velocity (proportional to u*^2.5). A sharp cutoff, which is almost independent of the wind speed, occurs at a wavelength of about 7 mm.},
	doi = {10.1029/JC095iC07p11531},
	author = {Bernd J{\"a}hne and Riemer, K.}
}
@conference {wierzimok1989,
	title = {Automatic particle tracking velocimetry beneath a wind-stressed wavy water surface with image processing},
	booktitle = {5th International Symposium on Flow Visualization},
	year = {1989},
	doi = {10.5281/zenodo.14004},
	author = {Dietmar Wierzimok and Bernd J{\"a}hne}
}
@conference {halsema1989b,
	title = {Comparisons of X-band Radar Backscatter Measurements with Area extended wave slop measurements made in a large Wind/Wave Tank},
	booktitle = {Proc. IGARSS{\textquoteright}89},
	volume = {5},
	year = {1989},
	pages = {2997--3001},
	doi = {10.1109/IGARSS.1989.575986},
	author = {van Halsema, D. and C. J. Calkoen and W. A. Oost and P. Snoeij and Bernd J{\"a}hne}
}
@book {jaehne1989b,
	title = {Digitale Bildverarbeitung},
	year = {1989},
	publisher = {Springer},
	organization = {Springer},
	doi = {10.1007/978-3-662-06734-5},
	url = {http://d-nb.info/890489467},
	author = {Bernd J{\"a}hne}
}
@conference {jaehne1989,
	title = {Energy balance in small-scale waves: an experimental approach using optical slope measuring technique and image processing},
	booktitle = {Radar Scattering from Modulated Wind Waves},
	year = {1989},
	pages = {105--120},
	publisher = {Kluwer Academic Publishers},
	organization = {Kluwer Academic Publishers},
	doi = {10.1007/978-94-009-2309-6_10},
	author = {Bernd J{\"a}hne},
	editor = {Komen, G. J. and W. A. Oost}
}
@inbook {halsema1989a,
	title = {First results of the VIERS-1 experiment},
	booktitle = {Radar Scattering from Modulated Wind Waves},
	year = {1989},
	pages = {49--57},
	publisher = {Kluwer Academic Publishers},
	organization = {Kluwer Academic Publishers},
	doi = {10.1007/978-94-009-2309-6_5},
	author = {Halsema, D. and Bernd J{\"a}hne and C. J. Calkoen and P. Snoeij},
	editor = {W. A. Oost and Komen, G. J. and W. A. Oost}
}
@article {jaehne1989a,
	title = {Investigating the transfer process across the free aqueous boundary layer by the controlled flux method},
	journal = {Tellus},
	volume = {41B},
	number = {2},
	year = {1989},
	pages = {177--195},
	abstract = {Theory and experimental results of a new method are described directly investigating the transfer processes across the aqueous viscous boundary layer. The method is based on a known and controllable flux density being applied at the interface. Then the local transfer velocity can be determined by monitoring the tracer concentration at the water surface within minutes. Moreover, the time constant for the transport across the boundary layer ("surface renewal time") can be measured directly. Comparison of the theoretical and measured frequency response of the boundary layer yields significant deviations. The technique is put into operation for heat transfer measurements. Direct comparisons with gas exchange measurements in several wind/wave facilities verify that the gas transfer velocity can be accurately extrapolated from the heat transfer measurements. A new way is opened both for detailed studies of the transfer processes in wind/wave facilities and the urgently needed direct parameterization of the transfer velocity as a function of windshear, wave parameters, and water turbulence in natural systems as rivers, lakes and the ocean. This paper includes (as a first example) measurements on the fetch dependency of the transfer process.},
	doi = {10.1111/j.1600-0889.1989.tb00135.x},
	author = {Bernd J{\"a}hne and P. Libner and Fischer, R. and Thomas Billen and Erich J. Plate}
}
@conference {jaehne1989c,
	title = {Motion determination in space-time images},
	booktitle = {Image Processing III, SPIE Proceeding 1135, international congress on optical science and engineering, Paris, 24-28 April 1989},
	year = {1989},
	pages = {147--152},
	doi = {10.1117/12.961657},
	author = {Bernd J{\"a}hne}
}
@conference {jaehne1989d,
	title = {Optical measuring technique for small scale water surface waves},
	booktitle = {Advanced Optical Instrumentation for Remote Sensing of the Earth{\textquoteright}s Surface from Space, SPIE Proceeding 1129, International Congress on Optical Science and Engineering, Paris, 24-28 April 1989},
	year = {1989},
	pages = {147--152},
	doi = {10.1117/12.961496},
	author = {Bernd J{\"a}hne and Bernd J{\"a}hne},
	editor = {Stefan Waas and Stefan Waas}
}
@booklet {jaehne1989e,
	title = {Physics and chemistry of gas exchange on the ocean surface},
	year = {1989},
	author = {Bernd J{\"a}hne}
}
@conference {halsema1988,
	title = {VIERS-1: A Programme of Wind Scatterometry},
	booktitle = {Geoscience and Remote Sensing Symposium, Proc.\ IGARSS{\textquoteright}88},
	volume = {1},
	year = {1988},
	pages = {572},
	doi = {10.1109/IGARSS.1988.570207},
	author = {van Halsema, D. and de Loor, P. and Bernd J{\"a}hne}
}
@conference {wierzimok1987,
	title = {Bildfolgenanalyse dreidimensionaler turbulenter Str{\"o}mungen},
	booktitle = {Proc. 9. DAGM-Symposium zur Mustererkennung 1987},
	volume = {149},
	year = {1987},
	pages = {288},
	publisher = {Springer},
	organization = {Springer},
	doi = {10.1007/978-3-662-22205-8_71},
	author = {Dietmar Wierzimok and Bernd J{\"a}hne and J. Dengler},
	editor = {E. Paulus}
}
@article {libner1987a,
	title = {Ein neue Methode zur lokalen und momentanen Bestimmung der Wiederbel{\"u}ftungsraten von Gew{\"a}ssern},
	journal = {Wasserwirtschaft},
	volume = {77},
	number = {5},
	year = {1987},
	pages = {230--235},
	doi = {10.5281/zenodo.13129},
	author = {P. Libner and Bernd J{\"a}hne and Erich J. Plate}
}
@conference {jaehne1987,
	title = {Image sequence analysis of complex physical objects: nonlinear small scale water surface waves},
	booktitle = {Proc. of 1st International Conference on Computer Vision},
	year = {1987},
	pages = {191--200},
	publisher = {IEEE},
	organization = {IEEE},
	doi = {10.5281/zenodo.13126},
	author = {Bernd J{\"a}hne}
}
@article {jaehne1987a,
	title = {Measurement of the diffusion coefficients of sparingly soluble gases in water},
	journal = {J. Geophys. Res.},
	volume = {92},
	number = {C10},
	year = {1987},
	pages = {10,767--10,776},
	abstract = {The diffusion coefficients D of important gas tracers dissolved in water and seawater were measured with a modified Barrer method. The measurements include the gases He, Ne, Kr, Xe, H2, CH4, and CO2 dissolved in distilled water in the temperature range from 5 to 35{\textdegree}C, and He and H2 dissolved in seawater in the same temperature range. The maximum systematic error is estimated to be well below 5\%. The isotopic fractionation in the diffusion coefficient was determined to be (0.87 {\textpm} 0.05) for 13CO2/12CO2 and (15 {\textpm} 3)\% for 3He/4He.},
	doi = {10.1029/JC092iC10p10767},
	author = {Bernd J{\"a}hne and Gerhard Heinz and Wolfgang Dietrich}
}
@conference {jaehne1987c,
	title = {Neue Ans{\"a}tze zur Bildfolgenanalyse},
	booktitle = {Proc. 9. DAGM-Symposium zur Mustererkennung 1987},
	volume = {149},
	year = {1987},
	pages = {287},
	publisher = {Springer},
	organization = {Springer},
	doi = {10.1007/978-3-662-22205-8_70},
	author = {Bernd J{\"a}hne},
	editor = {E. Paulus}
}
@article {jaehne1987b,
	title = {On the parameters influencing air-water gas exchange},
	journal = {J. Geophys. Res.},
	volume = {92},
	year = {1987},
	pages = {1937--1950},
	abstract = {Detailed gas exchange measurements from two circular and one linear wind/wave tunnels are presented. Heat, He, CH4, CO2, Kr, and Xe have been used as tracers. The experiments show the central importance of waves for the water-side transfer process. With the onset of waves the Schmidt number dependence of the transfer velocity k changes from k proportional to Sc^-2/3 to k proportional to Sc^-1/2 indicating a change in the boundary conditions at the surface. Moreover, energy put into the wave field by wind is transferred to near-surface turbulence enhancing gas transfer. The data show that the mean square slope of the waves is the best parameter to characterize the free wavy surface with respect to water-side transfer processes.},
	doi = {10.1029/JC092iC02p01937},
	author = {Bernd J{\"a}hne and K. O. M{\"u}nnich and R. B{\"o}singer and A. Dutzi and Werner A. Huber and P. Libner}
}
@article {lifermann1987,
	title = {Une {\`e}tude en soufflerie de la r{\`e}flexion des hyperfr{\`e}quences par des champs de houles et de vagues},
	journal = {Oceanologia Acta},
	volume = {SP},
	year = {1987},
	pages = {15--22},
	doi = {10.5281/zenodo.13128},
	author = {A. Lifermann and Bernd J{\"a}hne and A. Ramamonjiarisoa}
}
@conference {jaehne1986,
	title = {Bildfolgenanalyse in der Umweltphysik: Wasseroberfl{\"a}chenwellen und Gasaustausch zwischen Atmosph{\"a}re und Gew{\"a}ssern},
	booktitle = {Proc. 8. DAGM-Symposium Mustererkennung 1986},
	year = {1986},
	note = {DAGM award},
	pages = {201--205},
	doi = {10.1007/978-3-642-71387-3_36},
	url = {http://www.ub.uni-heidelberg.de/archiv/18103},
	author = {Bernd J{\"a}hne}
}
@article {broecker1986,
	title = {Isotopic versus micrometeorologic ocean CO$_2$ fluxes: A serious conflict},
	journal = {J. Geophys. Res.},
	volume = {91},
	number = {C9},
	year = {1986},
	pages = {10517--10528},
	abstract = {Eddy correlation measurements over the ocean give CO2 fluxes an order of magnitude or more larger than expected from mass balance measurements using radiocarbon and radon 222. In particular, Smith and Jones (1985) reported large upward and downward fluxes in a surf zone at supersaturations of 15\% and attributed them to the equilibration of bubbles at elevated pressures. They argue that even on the open ocean such bubble injection may create steady state CO2 supersaturations and that inferences of fluxes based on air-sea pCO2 differences and radon exchange velocities must be made with caution. We defend the global average CO2 exchange rate determined by three independent radioisotopic means: prebomb radiocarbon inventories; global surveys of mixed layer radon deficits; and oceanic uptake of bomb-produced radiocarbon. We argue that laboratory and lake data do not lead one to expect fluxes as large as reported from the eddy correlation technique; that the radon method of determining exchange velocities is indeed useful for estimating CO2 fluxes; that supersaturations of CO2 due to bubble injection on the open ocean are negligible; that the hypothesis that Smith and Jones advance cannot account for the fluxes that they report; and that the pC02 values reported by Smith and Jones are likely to be systematically much too high. The CO2 fluxes for the ocean measured to date by the micrometeorological method can be reconciled with neither the observed concentrations of radioisotopes of radon and carbon in the oceans nor the tracer experiments carried out in lakes and in wind/wave tunnels.},
	doi = {10.1029/JC091iC09p10517},
	author = {Broecker, W. S. and Ledwell, J. R. and Takahashi, T. and R. Weiss and L. Merlivat and L. Memery and Bernd J{\"a}hne and K. O. M{\"u}nnich}
}
@article {jaehne1985,
	title = {He and Rn gas exchange experiments in the large wind-wave facility of IMST},
	journal = {J. Geophys. Res.},
	volume = {90},
	year = {1985},
	pages = {11,989--11,998},
	abstract = {In a collaboration between the Laboratoire de G{\'e}ochimie Isotopique (Centre d{\textquoteright}Etudes Nucl{\'e}aires, Saclay), the Institut de M{\'e}canique Statistique de la Turbulence (IMST, Marseille), and the Institut f{\"u}r Umweltphysik (Heidelberg), for the first time gas exchange experiments have been carried out in the large IMST wind-wave facility. The experiments included simultaneous measurements of Rn and He gas exchange rates, wave slope measurements at four fetches, and bubble measurements. Compared with transfer velocities measured previously in smaller tunnels, our results are considerably lower. This effect can be explained qualitatively by differences in the wave field, which must be taken into account as an important parameter for gas exchange. Wave breaking, starting at 12 m/s wind, was not intense. Consequently, only low bubble densities are obtained, not significantly enhancing gas exchange.},
	doi = {10.1029/JC090iC06p11989},
	author = {Bernd J{\"a}hne and Thomas Wais and L. Memery and G. Caulliez and L. Merlivat and K. O. M{\"u}nnich and M. Coantic}
}
@phdthesis {jaehne1985a,
	title = {Transfer processes across the free water interface},
	volume = {Habilitation},
	year = {1985},
	note = {IUP D-200},
	publisher = {Institut f{\"u}r Umweltphysik, Fakult{\"a}t f{\"u}r Physik und Astronomie, Univ. Heidelberg},
	type = {Habilitation thesis},
	abstract = {It is the aim of this thesis to discuss the transfer processes across a free gas-liquid interface. After some basic considerations, the state of the art presented in the literature is discussed. The only quantities studied so far are mean parameters like the transfer velocity for mass transfer and the friction velocity as a measure for momentum exchange. The discussion of the data obtained shows that this experimental approach is completely insufficient to explain the effects observed, mainly the large enhancement of mass transfer across the aqueous boundary layer for a free surface if compared to a solid one. Therefore methods providing a deeper insight into the complex transfer mechanisms have been developed. Special emphasize is put on their capabilities and their significance in proving and disproving theoretical concepts: - the study of the Schmidt number dependence of the mass transfer process, in order to obtain the shape of the turbulence increase at the surface - a comparison of the Schmidt number dependence and the velocity profile in the boundary layer, leading to a distinction of multi- and single-stage transport models - the measurement of the local and instantaneous transfer velocity across the boundary layer - a detailed study of water surface waves including the measurement of the phase speed and the coherency - the visualization of the surface waves and - the visualization of the mass transfer across the aqueous boundary layer both providing a direct insight into the two-dimensional structure of the processes. From the results obtained so far a clearer picture of the exchange processes and the turbulent structure at the free, wavy surface can be drawn already: With the onset of the waves at the free surface a new flow regime is established which has no analogue in flow at a solid surface. Eddies with length scales comparable to the dominant waves and closely linked to the wave field are an important feature of this structure. Kitaigorodskii{\textquoteright}s concept (1984) that turbulent patches generated by wave instability cause the enhanced gas exchange rates is in agreement with these findings. The development of the new methods promises further progress in understanding near-surface transport processes in the liquid.},
	doi = {10.11588/heidok.00016798},
	author = {Bernd J{\"a}hne}
}
@conference {liefermann1985,
	title = {Wind tunnel investigation of the characterization of radar backscattering by different wave fields},
	booktitle = {Third International Colloquium Spectral Signatures of Objects in Remote Sensing},
	volume = {1},
	year = {1985},
	pages = {137--140},
	abstract = {The motion phases of waves and sea swell that contribute to C and K-band reflection of radar waves were investigated in a wind tunnel designed to simulate air-sea interactions. Results at vertical incidence for various swells, water waves, winds, and combinations of wind and swell are presented. A very important contribution of wave breaking to radar backscattering strength is noted.},
	url = {http://adsabs.harvard.edu/abs/1985ssor.proc..137L},
	author = {A. Liefermann and A. Ramamonjiarisoa and Bernd J{\"a}hne}
}
@conference {jaehne1984,
	title = {A new optical bubble measuring device; a simple model for bubble contribution to gas exchange},
	booktitle = {Gas transfer at water surfaces},
	year = {1984},
	pages = {237--246},
	publisher = {Reidel},
	organization = {Reidel},
	doi = {10.1007/978-94-017-1660-4_22},
	author = {Bernd J{\"a}hne and Thomas Wais and Michael Barabas},
	editor = {W. Brutsaert and G. H. Jirka}
}
@conference {jaehne1984a,
	title = {Parameterization of air/lake gas exchange},
	booktitle = {Gas transfer at water surfaces},
	year = {1984},
	pages = {469--476},
	publisher = {Reidel},
	organization = {Reidel},
	doi = {10.1007/978-94-017-1660-4_42},
	author = {Bernd J{\"a}hne and K. H. Fischer and Johann Ilmberger and P. Libner and W. Weiss and D. Imboden and U. Lemnin and J. M. Jaquet},
	editor = {W. Brutsaert and G. H. Jirka}
}
@conference {jaehne1984b,
	title = {Wind/wave-tunnel experiments on the Schmidt number and wave field dependence of air-water gas exchange},
	booktitle = {Gas transfer at water surfaces},
	year = {1984},
	pages = {303--309},
	publisher = {Reidel},
	organization = {Reidel},
	doi = {10.1007/978-94-017-1660-4_28},
	author = {Bernd J{\"a}hne and Werner A. Huber and A. Dutzi and Thomas Wais and Johann Ilmberger},
	editor = {W. Brutsaert and G. H. Jirka}
}
@techreport {jaehne1983,
	title = {Messung des Gasaustausches und der Turbulenz an der Oberfl{\"a}che durch Sichtbarmachung der Grenzschicht},
	year = {1983},
	institution = {Institut f{\"u}r Umweltphysik, Universit{\"a}t Heidelberg},
	doi = {10.5281/zenodo.12201},
	author = {Bernd J{\"a}hne}
}
@conference {jaehne1983a,
	title = {Optical water waves measuring techniques},
	booktitle = {Talk, 1st International Symposium on Gas Transfer at Water Surfaces, Cornell University, Ithaca, New York, June 13--15, 1983},
	year = {1983},
	doi = {10.5281/zenodo.14008},
	author = {Bernd J{\"a}hne}
}
@article {lange1982,
	title = {Comparison between an amplitude-measuring wire and a slope-measuring laser water wave gauge},
	journal = {Rev. Sci. Instrum.},
	volume = {53},
	number = {5},
	year = {1982},
	pages = {651--655},
	abstract = {Capillary waves produced in a laboratory wind wave tunnel have been measured using a wire resistance-type gauge (measuring wave amplitude) and a laser gauge (measuring wave slope). Comparison of power spectra of the gauges shows good agreement to 80 Hz, which is the upper frequency limit of the wire gauge. The upper frequency limit of the laser gauge depends upon laser beam diameter and is about 300 Hz.},
	doi = {10.1063/1.1137036},
	author = {Lange, P. A. and Bernd J{\"a}hne and Tschiersch, J. and Johann Ilmberger}
}
@incollection {jaehne1982,
	title = {Trockene Deposition von Gasen {\"u}ber Wasser (Gasaustausch)},
	year = {1982},
	publisher = {Battelle Institut},
	doi = {10.5281/zenodo.10278},
	author = {Bernd J{\"a}hne},
	editor = {Flothmann, D.}
}
@incollection {tschiersch1980a,
	title = {Gas exchange trough a rough water surface in a circular windtunnel; wave characteristics under limited and unlimited fetch},
	number = {17},
	year = {1980},
	pages = {63--70},
	publisher = {Univ. Hamburg},
	doi = {10.5281/zenodo.10260},
	author = {Tschiersch, J. and Bernd J{\"a}hne},
	editor = {H. C. Broecker and L. Hasse}
}
@incollection {jaehne1980a,
	title = {The influence of surface tension on gas exchange: measurements of gas exchange with alcohol/water mixtures in a circular wind-water tunnel},
	number = {17},
	year = {1980},
	pages = {103--108},
	publisher = {Univ. Hamburg},
	doi = {10.5281/zenodo.10262},
	author = {Bernd J{\"a}hne and U. Siegenthaler},
	editor = {H. C. Broecker and L. Hasse}
}
@incollection {jaehne1980,
	title = {Momentum induced gas exchange through a smooth water surface, models and experimental results from linear and circular wind-water tunnels},
	number = {17},
	year = {1980},
	pages = {55--62},
	publisher = {Univ. Hamburg},
	doi = {10.5281/zenodo.10257},
	author = {Bernd J{\"a}hne and K. O. M{\"u}nnich},
	editor = {H. C. Broecker and L. Hasse}
}
@phdthesis {jaehne1980b,
	title = {Zur Parametrisierung des Gasaustauschs mit Hilfe von Laborexperimenten},
	volume = {Dissertation},
	year = {1980},
	note = {IUP D-145, Link Nationalbibliothek http://d-nb.info/810123614},
	publisher = {Institut f{\"u}r Umweltphysik},
	abstract = {In der folgenden Arbeit werden in Laborexperimenten die Mechanismen des Gasaustausches zwischen Atmosph{\"a}re und Meer untersucht. Dazu wurde erstmals ein ringf{\"o}rmiger Wind-Wasser-Kanal eingesetzt, der gegen{\"u}ber linearen eine Reihe von Vorteilen aufweist. Der Einflu{\ss} der Zentrifugalkr{\"a}fte auf die Austauschprozesse erwies sich als gering. Gemessen wurden neben der Gasaustauschrate f{\"u}r CO2 der Transfer von W{\"a}rme in Wasser, die Verdunstungsrate, die Schubspannungsgeschwindigkeit und mit Hilfe einer optischen Methode Neigungsspektren und mittlere Neigungen der Wasserwellen. Im glatten Fall entspricht die viskose Grenzschicht beiderseits der Wasseroberfl{\"a}che v{\"o}llig der an einer festen Wand. Das best{\"a}tigen die Experimente sowohl durch die absoluten Raten als auch durch die Schmidtzahlabh{\"a}ngigkeit des Gasaustausches von Sc^(-2/3), die unmittelbar aus Kontinuit{\"a}ts{\"u}berlegungen resultiert. Mit dem Auftreten von Kapillarwellen steigen die Transfergeschwindigkeiten der wasserseitig kontrollierten Austauschprozesse stark an. Die Erh{\"o}hung des Gasaustausches ist besonders gro{\ss}, da sich gleichzeitig die Schrnidtzahlabh{\"a}ngigkeit auf Sc^(-1/2) {\"a}ndert. Zur Erkl{\"a}rung des hohen Anstiegs reichen die bisherigen theoretischen Vorstellungen eine Grenzschichtdickenvariation durch Kapillarwellen nicht aus. Die {\"A}nderung der Schmidtzahlabh{\"a}ngigkeit des Gasaustausches deutet vielmehr an, da{\ss} durch das Wellenfeld sich ein neuer Mechanismus des turbulenten Transports einstellt. Zur Parametrisierung des Einflusses der Wellen erscheint die mittlere quadratische Neigung der Wellen als geeignete Gr{\"o}{\ss}e. In {\"U}bereinstimmung mit Laborexperimenten an linearen Wind-Wasser-Kan{\"a}len entfaltet sich der Einflu{\ss} der Kapillarwellen in einem Schubspannungsgeschwindigkeitsbereich von u = 10-30 cm/sec (U10 = 3-8 m/sec). In diesem Bereich steigt der Gasaustausch mit u_*^2 bis u_*^3 an. Bei h{\"o}heren Geschwindigkeiten ist der Gasaustausch proportional zu u_*. Das Zusammenwirken von turbulentem Transport und chemischer Reaktion l{\"a}{\ss}t sich mit gen{\"u}gender Genauigkeit mit dem tau - Modell berechnen.},
	doi = {10.11588/heidok.00016796},
	author = {Bernd J{\"a}hne}
}
@article {jaehne1979,
	title = {Measurements of gas exchange and momentum transfer in a circular wind-water tunnel},
	journal = {Tellus},
	volume = {31},
	year = {1979},
	pages = {321--329},
	doi = {10.1111/j.2153-3490.1979.tb00911.x},
	author = {Bernd J{\"a}hne and K. O. M{\"u}nnich and U. Siegenthaler}
}
@mastersthesis {jaehne1977,
	title = {Gaschromatische Tritiumanreicherung, Trennung der Wasserstoffisotope bei Adsorption},
	year = {1977},
	note = {IUP D-100},
	school = {Institut f{\"u}r Umweltphysik, Fakult{\"a}t f{\"u}r Physik und Astronomie, Univ.\ Heidelberg},
	abstract = {Die vorliegende Arbeit untersucht die M{\"o}glichkeiten gaschromatographischer Anreicherung von Tritium zur Messung von Low-Level-Proben. Es konnte ein tr{\"a}gergasfreies Verfahren entwickelt werden, das aus einer Kombination von Frontalanalyse und Verdr{\"a}ngungsentwicklung besteht. Es ist einfach zu handhaben, aber genauso effektiv wie kompliziertere bisherige Verfahren mit Tr{\"a}gergas (Kapitel 2). Verbesserungen im Kolonnenbau machen gr{\"o}{\ss}ere Anreicherungsfaktoren m{\"o}glich. Durch eine optimalere Wahl der Adsorber und den {\"U}bergang zu tieferen Temperaturen (63,2{\textdegree}K, Sieden von fl{\"u}ssigem Stickstoff unter vermindertem Druck) l{\"a}{\ss}t sich die vierfache Menge an Wasserstoff im gleichen Volumen anreichern wie mit den bisherigen gaschromatographischenVerfahren. Das gaschromatographische Verfahren ist gegen{\"u}ber dem Trennrohr schneller und platzsparender: eine 20 Nl Wasserstoffprobe l{\"a}{\ss}t sich in weniger als 2 Stunden in einer 0,3 1 Kolonne bei 63,2{\textdegree}K auf 1,3 Nl mit mehr als 99,0\% Tritiumausbeute einengen. Auch gr{\"o}{\ss}ere Mengen H2 lassen sich verarbeiten, soda{\ss} der bisherige Anreicherungsweg f{\"u}r Low-Level-Tritiumproben weiter vereinfacht werden kann (Kapitel 7). Breiten Raum nehmen grundlegende Untersuchungen ein, die erst eine optimale Parameterwahl erm{\"o}glicht haben. Im Kapitel 4 werden Grundlagen der Adsorption beschrieben und die Adsorber auf ihre Adsorptionskapazit{\"a}ten verglichen, die Theorie der Adsorption selbst findet sich in Anhang A2, die Me{\ss}verfahren in Anhang A1. Die Untersuchung der Trennfaktoren der Adsorption ist Gegenstand von Kapitel 5. Da f{\"u}r HT geeignete Trennfaktoren in der Literatur fehlen, wurden sowohl eigene Messungen unternommen, als auch versucht mit 3 Adsorptionsmodellen die Beziehung der Trennfaktoren untereinander (logarithmische Verh{\"a}ltnisse, Bigeleisenfaktoren) theoretisch zu berechnen (Kapitel 5, Anhang A3). Dabei ergab sich, da{\ss} Isotopentrennfaktoren einschlie{\ss}lich der Ortho-Para-Trennung (Kapitel 3) ein geeignetes Mittel sind, zwischen verschiedenen Vorstellungen {\"u}ber die Adsorption zu unterscheiden, was mit Isothermenmessungen nur schwer m{\"o}glich ist (Anhang A2). Das Modell einer mobilen Adsorption der H -Molek{\"u}le mit einer weitgehenden St{\"o}rung der Rotation in einer Ebene senkrecht zur Oberfl{\"a}che entspricht den Messergebnissen am besten.},
	doi = {10.5281/zenodo.9208},
	url = {http://www.ub.uni-heidelberg.de/archiv/16797},
	author = {Bernd J{\"a}hne}
}
