Facsimile and static presentation processing – Static presentation processing – Attribute control
Reexamination Certificate
2007-12-04
2007-12-04
Williams, Kimberly A. (Department: 2625)
Facsimile and static presentation processing
Static presentation processing
Attribute control
C358S518000, C358S529000
Reexamination Certificate
active
10267649
ABSTRACT:
A regulated black colorant amount calculating section calculates a corresponding regulated black colorant amount from the L*a*b* of a plurality of typical color signals in a partial color gamut, which can be represented by three colors excluding black. An optimum black colorant amount modeling section performs color prediction modeling to predict an optimum black colorant amount in a whole color gamut from plural sets of the typical color signal and the regulated black colorant amount. At this time, an extrapolation prediction from a color in a partial color gamut to a whole color gamut is performed to predict the optimum black colorant amount in which a natural color reproduction. By using the color prediction modeling, the optimum black colorant amount determining section determines a corresponding optimum black colorant amount from the L*a*b* of an input lattice point. a YMCK signal calculating section determines residual YMC and outputs a YMCK signal.
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Ikegami Hiroaki
Ogatsu Hitoshi
Sasaki Makoto
Fuji 'Xerox Co., Ltd.
Williams Kimberly A.
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