Color gamut mapping with black point compensation

Facsimile and static presentation processing – Natural color facsimile – Black signal synthesis

Reexamination Certificate

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Details

C358S001900, C358S518000, C358S519000, C382S162000, C382S167000

Reexamination Certificate

active

07554705

ABSTRACT:
The disclosure is directed to techniques for gamut mapping with modified black point compensation (BPC). The gamut mapping techniques promote well-distributed tone compression so that substantial loss of detail in highlight and shadow regions can be avoided. The gamut mapping techniques may be particularly useful in converting rich saturated images, such as RGB photographs, for presentation as much less saturated output, such as typical newsprint. Other example applications include conversion of CMYK Specifications for Web Offset Printing (SWOP) printing to CMYK Specifications for Newsprint Advertising Production (SNAP) newsprint, and conversion of RGB photos with camera profiling software to CMYK for all types of printing.

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