| 摘要 |
PROBLEM TO BE SOLVED: To match a color displayed in a self light-emitting manner under optional environment light and the color obtained by the reflection of illumination light or the like by performing chrominance signal conversion, based on the white of a recording medium and the white of the environment light. SOLUTION: R1 G1 B1 data obtained from a scanner 301 are converted into chrominance signals X1 Y1 Z1 , independently of a device in a scanner RGB↑XYZ conversion part 302 based on the scanner characteristic information of a scanner profile 303. In a signal conversion part 304, based on the information 309 of ambient light obtained from a sensor 310, information 312 for paper obtained from a colorimetry device 314 and monitor white information 308 obtained from a monitor profile 306, reference white is obtained and conversion to the chrominance signals X2 Y2 Z2 considered so as to make a printer matter and a display object on a monitor supply the same color appearance under observation environment is performed by using it. Based on the monitor characteristic information of the monitor profile 306, in an XYZ↑monitor RGB conversion part 305, the X2 Y2 Z2 signals are converted into monitor device signals R2 G2 B2 .
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