Patent ID: 7433511

Claim:
A processor-readable medium comprising processor-executable instructions for mapping color data, the processor-executable instructions comprising instructions for: adjusting a degree to which BG color coefficient generation is similar for process-neutral and K-only neutral images to produce BG coefficients; adjusting a degree to which UCR color coefficient generation is similar for process-neutral and K-only neutral images to produce UCR coefficients; and mapping CMY color data to CMYK color data using the produced BG coefficients and the produced UCR coefficients, wherein the mapping includes instructions for: moving points in a process-neutral color space, thereby mapping the CMYK data to reduce color in neutral colors in process-neutral images, wherein moving points in a process-neutral color space includes instructions for: mapping the process-neutral color space into a color space defined in Lab; establishing a first vector between a point on a neutral axis and a point having a neutral hue; establishing a second vector through the point on the neutral axis and a point to be moved and a point on a boundary of the color space defined in Lab; establishing a third vector through the point having neutral hue and the point on the boundary of the color space defined in Lab: establishing a fourth vector bisecting the second and the third vectors; projecting the point to be moved onto the fourth vector; and using formulas based on lengths of the vectors to move the point to be moved to a new location in the color space defined in Lab having similar L value.