Gray component replacement in color conversions

Details Gray component replacement in color conversions Gray component replacement in color conversions

2011-07-05

2011-07-05

Lee, Thomas D (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S504000

Reexamination Certificate

active

07973971

ABSTRACT:
A method includes receiving a first value in a first color space for conversion to a second value in a second color space. The first color space includes luminance, chroma, and hue components and the second includes black and multiple color components. The method includes identifying a color gamut limit of the second color space and determining multiple boundaries in the first color space corresponding to the limit. The method also includes identifying gray and saturation levels associated with first value based on a relationship of the luminance and chroma components and the boundaries. The method includes determining a black component value in the second color space using the identified gray level and the identified saturation level. The method also includes determining the second color value in the second color space using the black component value and the first value.

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