Color space converting apparatus and method of color space...

Details Color space converting apparatus and method of color space... Color space converting apparatus and method of color space...

2007-09-25

2007-09-25

Williams, Kimberly (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S002100, C358S518000, C345S589000

Reexamination Certificate

active

10099887

ABSTRACT:
When an sRGB color space and an wRGB color space have a common white point in a device-independent color space, the CPU31of a color printer20eliminates deviation of the white points of the two color spaces occurring when a color value of the sRGB color space has been converted to a color value of the wRGB color space using a matrix operation L, by correcting the coefficients of matrix L. As a result of correction a matrix L′ is obtained. CPU31executes gamma correction on the RGB color space color value obtained by a matrix operation S, and then executes matrix operation L′. CPU31executes inverse gamma correction on the color value obtained by a matrix operation L′.

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