The present invention relates to a categorical color perception system which automatically judges a categorical color and aims to judge a categorical color name correctly under various ambient lights. Test color measured at an experiment is inputted to an input layer portion corresponding to test color components 101 , illumination light components at the experiment are inputted to an input layer portion corresponding to illumination light components 102 , and connection weights are obtained by learning with backpropagation method so as to output a categorical color judged by an examinee. Although a structure between the input layer portion corresponding to test color components 101 and the input-side hidden layer portion corresponding to test color components 103 and a structure between the input layer portion corresponding to illumination light components 102 and the input-side hidden layer portion corresponding to illumination light components 104 are independent, weights of structurally corresponding connections are made the same.
Categorical Color Perception System