Correlating cyan and magenta planes for error diffusion halftoni

Details Correlating cyan and magenta planes for error diffusion halftoni Correlating cyan and magenta planes for error diffusion halftoni

1997-06-23

1999-09-07

Lee, Thomas D.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358534, 358456, 382252, H04N 146

Patent

active

059499656

ABSTRACT:
The present invention performs error diffusion halftoning while taking into account multiple color planes, such as cyan and magenta, when determining the placement of a dot in any of the color planes. Using this technique, printed dots of two or more colors are dispersed so as to avoid noticeable clumping of dots of two or more colors. This technique can be used to augment any existing error diffusion method.

REFERENCES:
patent: 3916096 (1975-10-01), Everett et al.
patent: 4339774 (1982-07-01), Temple
patent: 5313287 (1994-05-01), Barton
patent: 5739917 (1998-04-01), Shu et al.
Hewlett-Packard Patent Application 08/812,777 Mar. 6, 1997 Fast Error Diffusion Algorithm.

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