A color management system that transforms input image data from an input colorant space to an output colorant space using input and output device appearance transforms and a customizable gamut mapping algorithm. The gamut mapping algorithm is customizable based on the color management session in question,...http://www.google.com.hk/patents/US6704442?utm_source=gb-gplus-share專利 US6704442 - Composite color transformation using customized gamut mappings