Patent ID: 7697165
Filing Date: 2010-04-13
Classification: H04N

Abstract:
1. A gamut compression method for compressing video data in a first gamut into video data in a second gamut, comprising the steps of: compressing a value of color data in the first gamut, not contained in the second gamut, into a value of color data contained in the second gamut through a predetermined compression calculation, utilizing a gamut compression device; and generating gradation in a manner such that a plurality of pieces of color data having the same value as a result of the compression in the compressing step become different in value in the second gamut, utilizing a color gradation generator, wherein the gradation generating step comprises modifying the plurality of pieces of color data having the same value to be different in value by enhancing one of a color component and a color attribute having a maximum difference in the state thereof prior to the compressing step so that the maximum difference is enlarged.