Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1990-09-17
1993-03-23
Fuller, Benjamin R.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358447, 358457, 358465, H04N 140
Patent
active
051969424
ABSTRACT:
A method of reproducing gray levels on a device capable of displaying a limited number of gray levels. A system is disclosed for partitioning an image composed of pixels into halftone cells, each having multiple pixels. Each input pixel value within a halftone cell is translated into an output pixel value in accordance with a set of threshold arrays.
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Frahm Eric
Fuller Benjamin R.
Xerox Corporation
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