Variability in Color Discrimination Data Explained by a Generic Model with Nonlinear and Adaptive Procesing

摘要

A generic model of color discrimination is pre- sented. It involves adaptive nonlinearities at photoreceptor level and in color-opponent pathways. This model, with few parameters, can reproduce the various aspects of the ob- served data from six individual observers, as reported in studies by MacAdam, Wyszecki and Fielder, and Brown and MacAdam. It is base on two main hypotheses:(1)all the Observers have the same kind of nonlinear adaptive func- Tions;(2)each observer has his or her own coding of color Oppositions.