Systems and methods for adaptive dynamic range adjustment...

Details Systems and methods for adaptive dynamic range adjustment... Systems and methods for adaptive dynamic range adjustment...

2005-12-08

2009-02-17

Coles, Edward L (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S522000, C358S504000, C358S518000, C382S168000, C382S162000, C382S167000, C382S254000

Reexamination Certificate

active

07492486

ABSTRACT:
A method is described to match an original binary image with the dynamic range of a desired target document. The original binary image is restored first to contone and a histogram of the contone image is processed to generate a Tone Reproduction Curve (TRC) for the contone image with improved dynamic range. The histogram processing includes determining a histogram of the contone image, and generating the TRC based on matching the determined histogram with a target histogram profile. This helps in matching outputs from legacy devices to a desired quality.

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