The quasi-invariant derivatives can be used to suppress undesired edges such as shadow, shading and specular edges. LITERATURE: J. van de Weijer, Th. Gevers, A.W.M Smeulders " Robust Photometric Invariant Features from the Color Tensor" IEEE Trans. Image Processing, vol. 15 (1), January 2006.

ColorFeatures
.............\canny.m
.............\castle.tif
.............\ColorHarris.m
.............\ColorStructureTensor.m
.............\ColorStructureTensor2.m
.............\color_canny.m
.............\color_gradient.m
.............\demo_color_canny.m
.............\demo_color_harris.m
.............\demo_quasi_invariant_edges.m
.............\dilation33.m
.............\fill_border.m

.............\gDer.m
.............\getmaxpoints.m
.............\HSI_der.m
.............\make_image.m
.............\O2RGB.m
.............\opponent_der.m
.............\RGB2luminance.m
.............\RGB2O.m
.............\speelgoed.tif
.............\spherical_der.m
.............\star_sym_color.m
.............\visualize_corners.m

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