Shaded picture signal processing system and method

Details Shaded picture signal processing system and method Shaded picture signal processing system and method

1981-01-19

1982-12-28

Britton, Howard

Facsimile and static presentation processing

Facsimile

Recording apparatus

358138, 364515, H04N 140

Patent

active

043665071

ABSTRACT:
A shaded picture signal processing system and method which produces recorded pictures of high quality with a small number of gradation levels with the resolution of the picture maintained nearly unchanged. False contours appearing as quantization distortion are removed by dispersing noise of equal magnitude to the false contours throughout the whole picture or a specified portion of the picture so that the false contours cannot be detected by the human eye.

REFERENCES:
patent: 4258393 (1981-03-01), Ejiri

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