Patent ID: 8325199

Claim:
An image processing apparatus comprising: a characteristics acquisition unit that acquires perceived achromatic color region characteristics of additive color mixing applied in a display; and a transform method determination unit that determines a transform method from one color gamut of an input color space to another color gamut used by an output device, based on the color reproduction characteristics acquired by the characteristics acquisition unit, wherein the characteristics acquisition unit displays a first color made by mixing a plurality of color components in equal quantities and additional colors modified by value modification of at least one of the color components of the first color on the display and acquires color information selected from the thus displayed first color and additional colors, and wherein the transform method determination unit determines a transform method for hue transformation relative to an offset point in mixing additive primary colors that is calculated according to the color information acquired by the characteristics acquisition unit and toward a direction of the complementary color of the offset point in mixing additive primary colors.