Color processing apparatus and method, and non-transitory computer readable medium

摘要

A color processing apparatus includes a correction unit. When, among colors on a color gamut boundary from a lowest-lightness color on an achromatic color axis to a highest-chroma color in a predetermined color space in an output color gamut of an output device in the color space, there exist a high-lightness color whose lightness is higher than that of the highest-chroma color and a color with the same lightness as that of the high-lightness color but with different chroma, and when there exists a low-lightness color whose lightness is lower than that of the lowest-lightness color on the achromatic color axis in the color space, the correction units corrects the low-lightness color to a higher lightness side higher than that of the lowest-lightness color on the achromatic color axis.

主权项

1. A color processing apparatus comprising:
an output device with an output color gamut on a color boundary in a redetermined color space in a color space; and a correction unit that corrects a low-lightness color to a higher lightness side higher than that of a lowest-lightness color on an achromatic color axis when (1) there exists, among colors on a color gamut boundary from the lowest-lightness color on the achromatic color axis to a highest-chroma color in the output color gamut, a high-lightness color whose lightness is higher than that of a highest-chroma color and a color with a same lightness as that of the high-lightness color but with a different chroma, and (2) there exists a low-lightness color whose lightness is lower than that of the lowest-lightness color on the achromatic color axis in the color space.