Patent ID: 8582173

Claim:
A color processing apparatus comprising: an input range obtaining unit configured to obtain an input range of input color data represented in an extended RGB color space, a range of the extended RGB color space being extended from a range of a base RGB color space; a setting unit configured to set grid point coordinate values for each of a plurality of color components in the extended RGB color space based on the input range of the input color data; and a generating unit configured to generate a look-up table by performing conversion processing on each look-up table coordinate value which is a combination of a grid point coordinate value set for the plurality of color components, and to store a result of the conversion processing in the look-up table for a target device, wherein the setting unit sets the grid point coordinate value such that each of primary colors having a value of 0 or 1 of the base RGB color space is located at a grid point, and the plurality of color components have identical grid point coordinate values between the primary colors, and wherein the setting unit sets the grid point coordinate value that is determined independently from the target device.