Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1991-06-27
1992-07-14
Brinich, Stephen
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358466, 358455, 358433, G06K 940
Patent
active
051308231
ABSTRACT:
For highlight or dark areas of images, the error terms diffused to neighborhood pixels include components which are periodic with respect to a wavelength where the wavelength is a function of the density level of the pixels from which the error terms are diffused. In this manner, patterned artifacts or "worms" in the highlight or dark areas of the images are reduced or illuminated.
REFERENCES:
patent: 4196454 (1980-04-01), Warren
patent: 4205341 (1980-05-01), Mitsuya et al.
patent: 4339774 (1982-07-01), Temple
patent: 4419696 (1983-12-01), Hamano et al.
patent: 4466021 (1984-08-01), Hibbard
patent: 4654721 (1987-03-01), Goertzel et al.
patent: 4891714 (1990-01-01), Klees
patent: 4958238 (1990-09-01), Katayama et al.
patent: 4962542 (1990-10-01), Klees
patent: 4975786 (1990-12-01), Katayama et al.
patent: 5008950 (1991-04-01), Katayama
"Color Compulsive Error Diffusion", by John C. Dalton, SPSE Advances in Non-Impact Printing Technologies, pp. 59-60 (1984).
"Error Diffusion Using Random Field Models", by John C. Dalton et al., pp. 333-339.
"Digital HalfToning Using Biased Error Diffusion", by D. Anastassiou, IBM Technical Disclosure Bulletin, vol. 26, No. 10B, Mar. 1984.
"Digital HalToning", by Robert Ulichney, Massachusetts Institute of Technology, Section 8.2, pp. 239-252, 1987.
Brinich Stephen
Cactus
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