Facsimile and static presentation processing – Static presentation processing – Attribute control
Reexamination Certificate
2008-05-13
2008-05-13
Rogers, Scott A. (Department: 2625)
Facsimile and static presentation processing
Static presentation processing
Attribute control
C358S003240, C358S003270, C358S519000, C358S521000
Reexamination Certificate
active
07372597
ABSTRACT:
In a method and system for processing a photographic image having lightness values, L*, representing one of the colorimetric values of an original scene, the photographic image is transformed. The transformed image has a gamma as a function of CIE 1976 L*, which includes a dark region having a rising slope, a light region having a falling slope, and a plateau region having a slope constantly within 5 percent of a maximum value in said plateau region. The rising slope is at least twice as large as the absolute value of the falling slope. The plateau region is between 10 L* and 30 L* wide. Gamma is a derivative of visually perceived reproduced CIE 1976 L* versus scene CIE 1976 L*. Gamma has a maximum slope between 1.5 and 2.0.
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Brust Thomas B.
Jin Elaine W.
Keller Brent
Topfer Karin
Eastman Kodak Company
Rogers Scott A.
Walker Robert Luke
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