Patent ID: 8446634

Claim:
A color conversion apparatus configured to converts an input color signal to a color signal within an output gamut that is reproducible by an image output device, the color conversion apparatus comprising: a line input unit configured to input an input line containing a plurality of input color signals on a line that connects either a white point or a black point and an arbitrary chromatic color point and; an input line correction unit configured to corrects the whole input line in such a manner that a maximum saturation point having a highest saturation on the input line is mapped onto a surface of the output gamut; a surface mapping unit configured to maps, onto the surface of the output gamut, each of the input color signals contained in the corrected input line; and a near-surface determination unit configured to determine whether the corrected input line corrected by the input line correction unit or each of points constituting the corrected input line is located near the surface of the output gamut, wherein the surface mapping unit is configured such that when the near-surface determination unit determines that the corrected input line or each of the points constituting the corrected input line is located near the surface of the output gamut, the surface mapping unit maps each of the input color signals contained in the corrected input line onto the surface of the output gamut.