Patent ID: 8717648

Claim:
An image processing apparatus comprising: a setting unit configured to set a color index representing a category to which an achromatic color and at least one chromatic color that are included in image data belong; an adjustment unit configured to adjust a color tone of the achromatic color belonging to the category that is indicated by the set color index in accordance with a hue of the at least one chromatic color belonging to the category; a generation unit configured to generate image data including the at least one chromatic color belonging to the category and the achromatic color of which the color tone is adjusted by the adjustment unit; and a total amount regulation setting unit configured to set a total amount regulating value used for regulating a total amount of quantitative values of colors in an output color space, wherein the adjustment unit is configured to adjust the color tone of the achromatic color belonging to the category such that a color difference, which differs between the at least one chromatic color belonging to the category and the achromatic color belonging to the category in an input color space that represents colors included in input image data as quantitative values, is conserved also in the output color space that represents colors included in output image data as quantitative values, the adjustment unit is configured to adjust the color tones of the at least one chromatic color and the achromatic color such that a total amount of quantitative values of the at least one chromatic color belonging to the category and a total amount of quantitative values of the achromatic color belonging to the category in the output color space do not exceed the total amount regulating value, and the generation unit is configured to generate image data including the at least one chromatic color and the achromatic color of which the color tones are adjusted by the adjustment unit.