Patent ID: 8045186

Claim:
An image processing system programmed on a non-transitory computer-readable medium comprising: a profile generating section that generates a color conversion profile on a basis of (i) first colorimetric values obtained from a first color chart, which includes a plurality of first color patches and is output from a target device, and (ii) second colorimetric values obtained from a second color chart, which includes a plurality of second color patches and is output from an output device other than the target device, the color conversion profile used for converting color data depending on the target device into color data depending on the output device; a designating section that allows a user to designate a color region including a plurality of colors and uses one of a mean of the colors, a median of the colors and a modal value of the colors as a designated color; a calculating section that calculates difference information between (i) a first data value obtained by converting the designated color into a device-independent color space and (ii) a second data value obtained by converting the designated color using the generated color conversion profile into a second color and then converting the second color into the device-independent color space; and a correcting section that corrects the first colorimetric values based on the calculated difference information, wherein the correcting section causes the profile generating section to generate the color conversion profile again based on the corrected first colorimetric values and the second colorimetric values, and the correcting section assigns different weights to respective components of the different information calculated by the calculating section.