Moment invariants to affine transformation of colours
A type of color descriptor (called CAMI) to characterize (planar) colour patterns is proposed. The CAMIs are invariant to full affine photometric transformations of the 3 colour bands. A constructive method is provided to generate CAMIs involving colour moments of arbitrary order and degree. The CAMIs can better cope with changing illuminations and white balance changes than most other descriptors. The CAMIs are moderately robust against (small) changes in viewpoint of 3D objects.
moment invariants affine transformation colour pattern recognition image retrieval