The method of the present invention first provides a plurality of representative color points existing on the surface of a gamut (s20), and sets a plurality of boundary lines that connect the plurality of representative color points substantially along the surface of the gamut (s22). The method subsequently...http://www.google.de/patents/US6075885?utm_source=gb-gplus-sharePatent US6075885 - Method of and apparatus for extracting cross plane area of gamut and computer program product for carrying out the extraction
