Patent ID: 8134763
Filing Date: 2012-03-13
Classification: H04N

Abstract:
1. A color conversion apparatus for converting an input point defined in a three-dimensional first color space into an output point defined in a three-dimensional second color space, the color conversion apparatus comprising: a position identifying unit that identifies a two-dimensional position for an input point defined in a three-dimensional first color space, the two-dimensional position being defined on a specific plane passing through a first white point, a first black point and the input point, the first white point and the first black point being defined in the first color space; a first conversion unit that converts the input point into an intermediate point that is defined in a device-independent color space; a second conversion unit that converts the intermediate point into a temporary output point that is defined in a three-dimensional second color space; and an output point identifying unit that identifies, in the second color space, an output point, whose position, defined on a plane that passes through a second white point, a second black point and the temporary output point, corresponds to the two-dimensional position identified by the position identifying unit, the second white point and the second black point being defined in the second color space.