Color error diffusion

Details Color error diffusion Color error diffusion

2008-04-22

2008-04-22

Poon, King Y. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S001900, C358S003050, C358S003060, C358S534000, C382S252000, C345S597000, C345S616000

Reexamination Certificate

active

07362472

ABSTRACT:
A method for multi-toning an input digital image having input pixels with two or more color channels to form an output digital image having modified output levels. The method includes producing an error signal for each color channel, combining the error signals to produce a combined error signal, sorting the error signals to produce a set of sorted error signals, and determining modified output levels responsive to the set of sorted error signals and the combined error signal.

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IEEE IPA97 Conference Publication No. 443□□Title: Optimal Image Segmentation by Error Diffusion□□Inventors: DM Bethel, NK Laurance, and BG Sherlock□□Publication Date: Jul. 17, 1997.
Japanese Machine Translation of JP 11-055535 A□□Title: Image Processor□□Inventor: Toru Ikeda□□Publication Date: Feb. 26, 1999.
IEEE IPA97 Conference Publication No. 443□□“Optimal Image Segmentation by Error Diffusion”□□DM Bethel, NK Laurance, BG Sherlock□□Jul. 17, 1997.
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