Halftone processing method for digital facsmile apparatus

Details Halftone processing method for digital facsmile apparatus Halftone processing method for digital facsmile apparatus

1982-07-07

1984-11-27

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358280, H04N 140

Patent

active

044854080

ABSTRACT:
A halftone processing method for a digital facsimile apparatus utilizing the dither method is disclosed which permits a threshold level to be changed at every desired number of picture elements in the horizontal scan direction. The change of the threshold level may occur selectively at every other picture element, every two picture elements every three picture elements and every four picture elements.

REFERENCES:
patent: 3393269 (1968-07-01), Zeuthen
patent: 4414581 (1983-11-01), Kato

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