Physiological primary colors, which correspond to tristimulus values of each of picture elements of an image on a hard copy, are obtained. A parameter, which represents the degree of incomplete chromatic adaptation, is determined in accordance with a correlated color temperature of a white point of a...http://www.google.fr/patents/US5920358?utm_source=gb-gplus-shareBrevet US5920358 - Method of transforming colors of image
