Electronic screening with galvanometer recorders

Details Electronic screening with galvanometer recorders Electronic screening with galvanometer recorders

1978-08-25

1980-02-19

Konick, Bernard

Facsimile and static presentation processing

Facsimile

Recording apparatus

358302, 346109, H04N 122

Patent

active

041897528

ABSTRACT:
A continuous-tone image, which can be in full color, is scanned to produce color-separation images in halftone dots. Edges of features in the scanned image are sensed, and the positions and shapes of the halftone dots that define corresponding edges in the halftone reproductions are adjusted so that they conform better to the feature edges. This reduces or eliminates the apparent serrations or roughness of feature edges in the halftone reproductions otherwise caused by misalignment of the halftone dots with the feature edges and improves image definition.

REFERENCES:
patent: 2818465 (1957-12-01), Brink
patent: 3153698 (1964-10-01), Hall
patent: 3197558 (1965-07-01), Ernst
patent: 3413411 (1968-11-01), Stauffer
patent: 3506779 (1970-04-01), Brown
patent: 3627908 (1971-12-01), Dalley
patent: 3636251 (1972-01-01), Daly
patent: 3646262 (1972-02-01), Moe
patent: 3887939 (1975-06-01), Hart
patent: 3956587 (1976-05-01), Nelson
patent: 3983319 (1976-09-01), Moe

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