Patent ID: 6331899
Filing Date: 2001-12-18
Classification: H04N

Abstract:
A method for generating single-channel color transformations, comprising the steps of:selecting a set of colorant values in a simulated device color space that are critical to render accurately;calculating the functions f.sub.c, f.sub.m, f.sub.y, and f.sub.k by finding output colorant values that minimize a colorimetric distance between input simulated colorant values and output colorant values, where said functions f.sub.c, f.sub.m, f.sub.y, and f.sub.k are single-channel color transformations given byc.sub.o =f.sub.c (c.sub.s)m.sub.o =f.sub.m (m.sub.s)y.sub.o =f.sub.y (y.sub.s)k.sub.o =f.sub.k (k.sub.s);and populating lookup tables with values determined as a result of said calculating step.