@conference {scharr2000a, title = {An anisotropic diffusion algorithm with optimized rotation invariance}, booktitle = {Proceedings of the 22th DAGM Symposium on Pattern Recognition}, year = {2000}, pages = {460--467}, doi = {10.1007/978-3-642-59802-9_58}, author = {Hanno Scharr and Weickert, J.} }