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System and method for counting ridges in a captured print image

  • US 20040109590A1
  • Filed: 08/01/2003
  • Published: 06/10/2004
  • Est. Priority Date: 08/02/2002
  • Status: Active Grant
First Claim
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1. A method for counting print ridges in a captured print image frame, comprising the steps of:

  • (A) traversing a pixel path through the captured print image frame;

    (B) determining a hysteresis band for the pixel path;

    (C) counting a number of crossings of the determined hysteresis band while traversing the pixel path; and

    (D) determining a number of print ridges based on the counted number of hysteresis band crossings.

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