Method and apparatus for vivid color correction in binary printi

Details Method and apparatus for vivid color correction in binary printi Method and apparatus for vivid color correction in binary printi

1994-10-11

1997-10-07

Bost, Dwayne

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358518, 358534, 358455, 358456, G06K 1500, G03F 308, H04N 140

Patent

active

056757166

ABSTRACT:
A vivid color correction technique eliminates artifacts from a predetermined tonal area of a halftone image to thereby improve the color vividness of that image. According to this technique, pixel tonal values associated with input colors are initially examined to determine a maximum color value. After error diffusion halftoning, the resulting binary pixel values are collectively processed to generate inter-color information for comparison with a selected harmonic color cluster. If the inter-color information specifies a color that does not match one of the colors of the selected harmonic cluster, the inter-color information is "corrected" to reflect an acceptable output color.

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