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Apparatus and method for halftone hybrid screen generation

  • US 6,775,032 B2
  • Filed: 02/27/2001
  • Issued: 08/10/2004
  • Est. Priority Date: 05/08/1998
  • Status: Expired due to Fees
First Claim
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1. An apparatus for halftone hybrid screen generation, comprising:

  • a video input, receiving video signals corresponding to gray scale pixel data in an image;

    a first halftoner, halftoning gray level pixels;

    a second halftoner, halftoning gray level pixels in a manner distinct from the first halftoner;

    a selector, using a segmenter on the gray level pixels to identify pictorial information as differentiated from text information;

    a halftone selector employing threshold comparisons to detect the high and low image density areas of those gray level pixels identified as pictorial information, and thereby direct which halftoner to use on a pixel.

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