Experiments were performed to test a set of general-purpose gamut-mapping functions. These gamut-mapping algorithms utilized contrast-preserving scaling functions. These algorithms were tested against the GCUSP gamut-mapping algorithm proposed by Morovic and Luo, which was shown to have very good universal gamut-mapping characteristics. The results of these experiments showed that vast improvements were obtained when linear lightness and chroma rescaling functions were replaced with contrast-preserving lightness and chroma rescaling functions. For these experiments, the gamut mapping consisted of sigmoidal lightness-remapping functions followed by either knee or sigmoid-like chromatic compression functions.
Department, Program, or Center
Chester F. Carlson Center for Imaging Science (COS)
IS&T/SID Seventh Color Imaging Conference: Color Science, Systems and Applications (1999) 167-172
RIT – Main Campus