Multi-bit rendering method and arrangement for continuous tone p

Details Multi-bit rendering method and arrangement for continuous tone p Multi-bit rendering method and arrangement for continuous tone p

1992-06-05

1993-04-20

Fuller, Benjamin R.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358455, 358457, 358458, 358459, 358462, 358466, H04N 123

Patent

active

052047539

ABSTRACT:
A method and arrangement for reproducing an original image, scans and digitizes an original image into pixels of a digitized image. A dot template, a bit-depth, and a dot type structure are selected. A set of gray dot patterns are generated from the dot template, pixel bit-depth and dot type structure that are selected. A 4-quadrant tone reproduction on the set of gray dot patterns is then performed to produce a set of thresholding values at each pixel of the digitized image. A first signal corresponding to a gray level halftoned representation of the digitized image using the thresholding values is then produced. From the first signal, a gray level halftoned reproduction of the original image is printed.

REFERENCES:
patent: 4736254 (1988-04-01), Kotera
patent: 5075780 (1991-12-01), Shibahara
patent: 5130821 (1992-07-01), Ng

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