Facsimile and static presentation processing – Natural color facsimile – Color correction
Reexamination Certificate
2008-07-08
2008-07-08
Williams, Kimberly A (Department: 2625)
Facsimile and static presentation processing
Natural color facsimile
Color correction
C358S001900, C358S518000, C358S003230, C345S601000, C348S649000
Reexamination Certificate
active
11047299
ABSTRACT:
A table representing a color gamut for a device for use in a color management system where colors are represented in a color appearance space comprises data representing a collection of hue slices through a boundary surface of the color gamut. The collection of hue slices comprises entries for vertex point hue slices obtained at each vertex point on the boundary surface of the color gamut, and entries obtained for additional hue slices between adjoining vertex point hue slices, where a number of the additional hue slices is determined such that there is no more than a specified angular difference between each hue slice. Each hue slice is represented by a hue value and a collection of hue slice points each containing a lightness value and a chroma value. The hue slice points of each hue slice are ordered in the table based on an angular altitude of each point, the angular altitude of each point being determined between a lightness axis of the color gamut and a vector projected from a midpoint of the lightness axis to the hue slice point.
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Haikin John S.
Sloan Rocklin J.
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