Process for providing digital halftone images with random error

Details Process for providing digital halftone images with random error Process for providing digital halftone images with random error

1990-04-13

1992-04-21

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358455, 358458, 358463, H04N 140

Patent

active

051073463

ABSTRACT:
A digital halftoning method and apparatus with error diffusion reduces visibly discernible artifacts. In the error diffusion method and apparatus, a range function provides random factors which are used to spread erros to neighboring pixels.

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