| 摘要 |
A method (for, e.g., proof) of mapping only colors which fall outside a color gamut on its boundary calculates color differences from all the points in the color gamut, and determines a mapping destination by interpolating points with smaller color differences. For this reason, as the number of points that express the device color gamut increases, a mapping destination search requires longer time. Hence, calorimetric values indicating the color gamut of an output device are obtained, information indicating the boundary of the color gamut is generated based on the calorimetric values, and it is determined whether a color signal falls outside the color gamut. The color signal which falls outside the color gamut is mapped on the boundary on the basis of the information indicating the boundary of the color gamut.
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