Image processing apparatus and method

摘要

An apparatus sets a chromaticity point serving as a gray reference in a color gamut of a color space that an output device is able to output, specifies, in the color gamut of the color space that the output device is able to output, a first minimum lightness point on a lightness axis of the set chromaticity point and a second minimum lightness point that is achromatic, and generates a gray line that passes through a black point that is a minimum lightness point on a line connecting the first minimum lightness point and the second minimum lightness point, the first minimum lightness point, and the set chromaticity point and reaches a white point in the color gamut of the color space that the output device is able to output.

主权项

1. An apparatus comprising:
a setting unit configured to set a chromaticity point serving as a gray reference in a color gamut of a color space that an output device is able to output; a first specifying unit configured to specify a first minimum lightness point on a lightness axis of the chromaticity point set by the setting unit in the color gamut of the color space that the output device is able to output; a second specifying unit configured to specify a second minimum lightness point that is achromatic in the color gamut of the color space that the output device is able to output; and a generation unit configured to generate a gray line that passes through a black point that is a minimum lightness point on a line connecting the first minimum lightness point specified by the first specifying unit and the second minimum lightness point specified by the second specifying unit, the first minimum lightness point, and the chromaticity point set by the setting unit, wherein the gray line reaches a white point in the color gamut of the color space that the output device is able to output, wherein the line connecting the first minimum lightness point and the second minimum lightness point is a line of an outermost shell of the color gamut.