Patent ID: 6411304
Filing Date: 2002-06-25
Classification: H04N

Abstract:
A color data conversion apparatus for converting first color data included in a first color gamut, according to prespecified target color data within a second color gamut, to second color data within the second color gamut; said apparatus comprising:an acquiring unit for acquiring third color data which is at the same hue angle as that of the first color data and also has the highest chroma within the second color gamut as well as fourth color data for an achromatic color having the same lightness as that of the third color data; and a converting unit for setting target color data on a first line linking the fourth color data acquired by said acquiring unit to color data corresponding to a black color in the second color gamut, on a second line linking the fourth color data to color data corresponding to a white color in the second color gamut, or on a third line linking the fourth color data to the third color data, and converting the first color data to the second color data according to the set target color data.