Apparatus for non-linear error diffusion thresholding of multile

Details Apparatus for non-linear error diffusion thresholding of multile Apparatus for non-linear error diffusion thresholding of multile

1989-04-24

1990-01-02

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358458, 358459, H04N 140

Patent

active

048917141

ABSTRACT:
Apparatus for converting multilevel video images into a bi-level image having an accurate rendition of the original multilevel grayscale of the image. The apparatus can correct for non-linearities introduced by current error diffusion techniques.

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patent: 4680645 (1987-07-01), Dispoto et al.
An Adaptive Algorithm for Spatial Grayscale, Floyd and Steinberg, proceeding of the S.I.D., vol. 17/2, second quarter 1976.
Edge Enhanced Digital Halftone, Machol, IBM, vol. 19, No. 1, Jun. 1976.
Multiple Error Correction Algorithm for Halftone, Continuous Tone and Text Production, Fox, Friedman, Schaadt, Stucki and Wong, IBM, vol. 23, No. 10, Mar. 81.

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