Medium recording color transformation lookup table, printing apparatus, printing method, medium recording printing program, color transformation apparatus, and medium recording color transformation program

摘要

When printing a photograph including colors in the range of the green hue to the blue hue wherein the color gamut of the printer is wider in the direction of chroma rise, the colors of its print result will be poorer in tones than the colors of the actual subject. ;According to the present invention, color gamut shift is executed for gamut mapping in which the shape of the color gamut of the first image processing device expands so as to be close to the shape of the color gamut of the second image processing device in a homogenous hue range. Moreover, color gamut expansion is executed for gamut mapping in which a certain region of the resulting gamut after the color gamut shift further expands into the color gamut of the second image processing device. Based on the thus defined relationship fo color gamut between the color gamut of the first image processing device and the color gamut of the second image processing device, color transformation is executed. In circumstances where a plurality of color gamuts are available on an image processing device, gamut mapping relationships between the first and second devices are defined for each gamut, thereby finer adjustment can be performed. Thus, image output in desirable colors can be obtained by making effective use of the color gamuts of the image processing device.