Patent ID: 8630021

Claim:
A color processing apparatus for generating a profile for color separation that indicates a relationship between input color values in an input color space and output signal values to be output to an image forming device, the apparatus comprising: an estimator, configured to estimate a color value in a color space, which is represented by lightness and chromaticity, of an output color reproduced by an output signal value, wherein the output signal value is obtained by sampling a range of the output signal value and corresponds to an input color value of a grid point of the input color space; a calculator, configured to calculate an evaluation value of tonality between a color value estimated to an input color value of a grid point of interest of the input color space by the estimator and color values estimated to input color values of grid points adjacent to the grid point of interest by the estimator; a determiner, configured to determine whether or not the evaluation value becomes less than a predetermined threshold value by changing the input color value of the grid point of interest; a setting section, configured to set the output signal value, which reproduces an output color corresponding to the estimated color value of the grid point of interest, to the grid point of interest when the input color value of the grid point of interest, whose the evaluation value becomes less than the predetermined threshold value, is obtained, wherein the calculator calculates the evaluation value by enlarging weight in a direction of the lightness more than weight in a direction of the chromaticity.