COLOR CORRECTION CONVERSION DERIVING METHOD, DEVICE USED FOR COLOR IMAGE REPRODUCTION SYSTEM, AND MEDIUM

摘要

PROBLEM TO BE SOLVED: To improve the accuracy of a mapping provided by means of the derived correction conversion by deriving the 2nd inverse conversion showing the composite approximate inversion between the forward and backward conversions and composing the 1st inverse conversion with the 2nd inverse conversion thereby obtaining the color correction conversion. SOLUTION: The 1st inverse conversion is derived from the forward conversion by the color correction conversion to a device which receives the device input and generates the device output based on the forward conversion that maps the device input of a device input color space to the device output of a device output color space. In this case, the device output serves as an output device 30 and the 1st inverse conversion maps a color to the device input color space from a 1st color space or the device input serves as an input device 10 and the 1st inverse conversion maps a color to a 2nd color space from the device output color space. Then the 2nd inverse conversion is derived to show the composite approximate inversion between the forward and backward conversions, and the 1st inverse conversion is composed with the 2nd inverse conversion to obtain the color correction conversion.