SYSTEM AND MEHTOD OF GAMUT MAPPING IMAGE DATA

摘要

A system and method of gamut mapping/clipping is described. The system and method applies to original images data color values in an original color space that have been transformed to obtain an original luminance value having an associated luminance/chrominance based color space and original chrominance value. The original luminance value is processed to obtain a processed color value having a processed luminance value and the original chrominance value. According to the system and method, the processed color value is mapped back into the original color gamut by selecting a target color value on a luminance axis. A different target color value is selectable for each of a plurality of color values of the image data. A mapped color value is then determined by linearly projecting from the processed color value towards the target color value. The mapped color value is located at the intersection of the gamut boundary of the original color space and the projection.