Image analysis – Color image processing – Color correction
Reexamination Certificate
2007-10-09
2007-10-09
Do, Ahn Hong (Department: 2624)
Image analysis
Color image processing
Color correction
C382S162000, C382S274000
Reexamination Certificate
active
10777124
ABSTRACT:
A gradation correction curve creation apparatus for creating gradation correction curves for improving color reproducibility in UCR process includes a first gradation correction curve creation section creating a first gradation correction curve based on measured density values and target density values of monochromatic patches, a second gradation correction curve creation section creating a second gradation correction curve based on measured calorimetric values and target calorimetric values of gray patches, a start position calculation section calculating start positions on the first and second gradation correction curves at which the gray component in color mixture starts replacement with K through UCR process, and a gradation correction curve combining section creating a third gradation correction curve by smoothly connecting the more shadowed side of the first gradation correction curve than the start position and the more highlighted side of the second gradation correction curve than the start position.
REFERENCES:
patent: 6388768 (2002-05-01), Hada et al.
patent: 6952288 (2005-10-01), Yamada et al.
patent: 2001-245171 (2001-09-01), None
patent: 2002-262122 (2002-09-01), None
Do Ahn Hong
Fujifilm Corporation
Sughrue Mion Pllc.
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