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METHOD FOR AUTOMATICALLY DETERMINING THE ACCEPTABILITY OF A DIGITAL IMAGE

  • US 20100303363A1
  • Filed: 08/12/2010
  • Published: 12/02/2010
  • Est. Priority Date: 12/09/2004
  • Status: Active Grant
First Claim
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1. A method for automatically determining the acceptability of an input digital image for a printing operation, said method comprising the steps of:

  • (a) forming a low resolution analysis image from the input digital image;

    (b) detecting edge pixels representing edges in the low resolution analysis image;

    (c) obtaining an edge map of the edge pixels in the low resolution analysis image;

    (d) dividing the edge map into a plurality of blocks, where each block may contain edge pixels from the edge map;

    (e) identifying two or more blocks having the largest number of edge pixels;

    (f) obtaining from the input image two or more important areas in the input image that correspond to the two or more blocks identified in step (e);

    (g) calculating a salient acceptability feature based upon edge occurrence in each of the important areas;

    (h) calculating a statistical measure of edge occurrence from the salient acceptability features calculated in step (g); and

    (i) using the statistical measure of edge occurrence to determine the acceptability of the digital input image for printing.

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