Patent ID: 7944595

Claim:
A color processing method comprising: using a processor to perform the steps of: generating patch data corresponding to grid points obtained by dividing an input color space, supplying the patch data to a target printer to print a plurality of first patches corresponding to the respective grid points on a print medium, and obtaining colorimetry results of the plurality of first patches; generating patch data corresponding to some of the grid points and an additional point between these grid points, supplying the patch data to the target printer to print a plurality of second patches corresponding to the some grid points and the additional point on a print medium of the same type as the print medium used for printing the plurality of first patches, and obtaining colorimetry results of the plurality of second patches, wherein the some of the grid points are included in a region of the input color space where a desirable color prediction is not obtained by a linear interpolation using the colorimetry results of the plurality of first patches; and performing an interpolation calculation to obtain a colorimetric value of the additional point, based on colorimetric values of grid points around the additional point in the colorimetry results of the plurality of first patches using, as weights, distances on the color space between the colorimetric value of the additional point and the colorimetric values of grid points around the additional point in the colorimetry results of the plurality of second patches.