Facsimile and static presentation processing – Natural color facsimile – Color correction
Reexamination Certificate
2011-07-12
2011-07-12
Thompson, James A (Department: 2625)
Facsimile and static presentation processing
Natural color facsimile
Color correction
C358S515000, C358S518000
Reexamination Certificate
active
07978385
ABSTRACT:
A patch image generating section101generates a patch image by resolving the RGB space into an arbitrary number of steps, and by converting into a CMYK space via an LUT. A patch image calorimetric section102outputs the patch image onto a recording medium via a printer, and carries out colorimetry of the output image with a calorimeter. As calorimetric values, calorimetric values represented in an L*a*b* space independent of the RGB space and CMYK space are obtained. A linear space generating section104calculates ideal spatial distribution in the color space of the LUT according to the calorimetric values supplied. A color separation evaluation value calculating section105compares the ideal spatial distribution in the color space of the LUT with actual measurement data of the LUT. According to the compared results, color separation evaluation values are calculated from differences between the ideal value and actual measurement values.
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Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Thompson James A
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