发明名称 |
ELECTRONIC SCREENING |
摘要 |
<p>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. A selection of a screen angle is made from a plurality of screen angles.</p> |
申请公布号 |
CA1004988(A) |
申请公布日期 |
1977.02.08 |
申请号 |
CA19740212814 |
申请日期 |
1974.11.01 |
申请人 |
PRINTING DEVELOPMENTS, INC. |
发明人 |
MOE, WILLIAM W.;LOTZ, ROBERT W.;GREEN, ETHAN R.;FAZIO, RODOLFO |
分类号 |
B41J2/44;G03F5/00;G03G15/04;H04N1/40;H04N1/405;H04N1/52 |
主分类号 |
B41J2/44 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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