High-accuracy color reproduction (color management systems)

Gamut mapping is a key technology which realizes good matching between orig inal, displayed, and printed colors. We examined the application of gamut m apping algorithms to device profiles to achieve color transformation in col or management systems (CMSs). As a new performance evaluation method, we fo cused on errors that occur during this transformation. To obtain a mapping method suitable for implementation, we developed a new gamut mapping algori thm called "Chroma Proportional Clipping (CPC)." This algorithm preserves c hroma and tone while reducing interpolation errors. The reproduction of chr oma and tone was evaluated subjectively, and the reduction of errors was ev aluated based on color differences. Compared with three conventional algori thms, CPC was given the best mean score in subjective evaluations of color matching. Also, CPC has a relatively small reduction of errors of 14.2 CIEL AB units.