It appears that the human visual system does not project the RGB image into separate processing channels. In this sense, our approach uses the compact reprentation of rotors (quaternions) to process color images. In the experimental part, we compare our rotor color edge detector with standard edge detectors, this shows that our detector behaves as an holistic filter which discriminates edges produced by shadows. We believe that our approach may encourage the design of powerful algorithms for compact color processing.

edb@gdl.cinvest.av.mx