Dynamics of asymmetric color matching

It is known that the human color constancy is not complete, We conducted as ymmetric color matching experiments to clarify a simple question: what was it that the observer matched. Observers made apparent-color matches between Munsell color chips under D-65 illumination and a color chip presented on a CRT. The observers' matches showed incomplete color constancy. We applied relative cone-weight transformation to each observer's results under contr ol condition, so as to equate the unique-white point for each illuminant co ndition. The result of this simple transformation showed good match to the actual data. Our results suggest what the observer was doing during the asy mmetric color matches was picking up apparent-color signal, achieved from t he test color chip under D-65, and reconstructing it with respect to the un ique-white by a simple cone response scaling.