Patent ID: 7239422

Claim:
A method of generating a reduced color gamut boundary for a color output device, the color output device producing output colors using three or more colorants, wherein the amount of each colorant is controlled by a colorant control signal vector, comprising the steps of: a) determining a forward device model for the color output device relating the colorant control signal vector to the corresponding output color; b) determining a complete color gamut boundary for the color output device, comprising a set of color gamut boundary points; c) determining a set of candidate colorant control signal vectors for each point in the complete color gamut boundary; d) selecting a preferred colorant control signal vector from the set of candidate colorant control signal vectors for each point in the complete color gamut boundary using a cost function responsive to one or more cost attribute(s) that vary as a function of the colorant control signal vector; and e) defining a reduced color gamut boundary comprising a set of output colors by using the forward device model to determine the output colors for each of the preferred colorant control signal vectors.