Body sets and lines: A reliable representation of images

This paper proposes a novel definition of color lines and sets, based on the dichromatic model for lambertian objects. The ends of the body vectors are robustly detected, from the clearest to the darkest through to a multi-level 2D histogram analysis. Finally, instead of classically defining the topographic map along one sole luminance direction, our body lines are designed along each body vector. Compared to existing topographic maps, our method is more compact while better preserving the color quality. Furthermore, it is faster to compute than.