Patent ID: 6819458
Filing Date: 2004-11-16
Classification: H04N

Abstract:
A color transform apparatus comprising:a source color vector calculator that is configured to calculate a source color vector connecting a center color set in gamut common to a first device and a source color in the gamut of the second device; a first gamut distance calculator that is configured to calculate a first gamut distance between said center color and an intersection at which said source color vector or an extended source color vector intersects the gamut of said first device; and a second gamut distance calculator that is configured to calculate a second gamut distance between said center color and an intersection at which said source color vector or an extended source color vector intersects the gamut of second first device; wherein a target color in said first device is set to a color corresponding to a vector obtained by multiplying the source color vector calculated in said source color vector calculator by a coefficient calculated from said first gamut distance and second gamut distance.