Color processing device and its method

Details Color processing device and its method Color processing device and its method

2006-01-31

2008-12-09

Zimmerman, Mark (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C345S590000

Reexamination Certificate

active

07463386

ABSTRACT:
In order to implement color matching between different printers upon proofing or the like, color processing that absorbs not only a difference between gamuts but also differences among white, black, and a gray line is provided. Two pieces of gamut information of an appearance color space of first and second image devices are acquired. The color signals on a gray line of each gamut information are converted into those on a lightness axis of the appearance color space. A gamut indicated by the gamut information of the first image device is mapped within a gamut indicated by the gamut information of the second image device. Color signals after mapping, which correspond to a gray line of the first image device, are converted into gray color signals according to white and black indicated by the gamut information of the second image device.

REFERENCES:
patent: 7126718 (2006-10-01), Newman et al.
patent: 2002/0000993 (2002-01-01), Deishi et al.
patent: 2003/0184779 (2003-10-01), Ohga
patent: 2004-213317 (2004-07-01), None

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