Patent ID: 7190487
Filing Date: 2007-03-13
Classification: G06F,G06K,H04N

Abstract:
1. A method of color conversion comprising: providing a first color domain input signal set having plural input signals, including compensating for hue shifts in the first color domain by inputting a CMY input signal and black generation; sorting the input signals of the first color domain input signal set according to signal intensity, including sorting the input signal sets into color domain components, V designing and generating plural CMYK 1-D look-up table sets for color polyhedrons; selecting a set of look-up tables for use with a specific color polyhedron, wherein said selecting is determined as a function of the input signal set; looking up values in the look-up table set as a function of a section of the specific color polyhedron; generating weights as a function of the sorted signal intensities, wherein generating weights includes generating weights w selecting a look-up table as a function of the sorted components and the order signal; and interpolating the output from the selected look-up tables as a function of the selected look-up table and the generated weights to produce a CMYK color domain signal set which is converted to a desired color domain signal set, including interpolating the color domain components with the weights and selected look-up table to provide a signal set for a desired color domain.