| 摘要 |
When the color gamut of a printer is further expanded, if the same gamut expansion processing as in the prior art is applied, the chroma level becomes too high beyond necessity, resulting in extremely vivid colors. Hence, less than a favorable image is obtained. To solve this problem, information of each of an input gamut and output gamut is input, an expanding method of the input gamut is set, and an expanded gamut is generated by expanding the input gamut by that expanding method. Based on the information of the expanded gamut and output gamut, conversion characteristics required to convert the color values of the expanded gamut to those of the output gamut are calculated.
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