Method and apparatus for generating halftone images with adjuste

Details Method and apparatus for generating halftone images with adjuste Method and apparatus for generating halftone images with adjuste

1996-02-23

1998-07-07

Coles, Sr., Edward L.

Image analysis

Color image processing

358298, 358515, 358534, 358536, 358454, H04N 121, H04N 140, H04N 123, H04N 146

Patent

active

057780919

ABSTRACT:
Each image area in a total image is assigned with a screen angle mode Ms indicating whether screen angles of magenta and cyan separations are to be adjusted or not. Screen angle data representing screen angles of magenta and cyan are produced according to the screen angle modes Ms. A dot signal for recording a halftone image of each of the magenta and the cyan separations is generated by comparing screen pattern data of a certain screen angle specified by the screen angle data with image data for each color separation. Accordingly, the present invention effectively prevents a moire in any image area included in a printing image.

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