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Image processing for pattern extraction

  • US 5,335,294 A
  • Filed: 07/20/1992
  • Issued: 08/02/1994
  • Est. Priority Date: 07/23/1991
  • Status: Expired due to Fees
First Claim
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1. An image processing method comprising the steps of:

  • inputting an image;

    storing a start point;

    searching for black pixels, starting from the stored starting point, and tracing an outline of a pattern including black pixels located in the searching;

    discriminating whether a whole pattern has been extracted by a tracing operation in said searching and tracing step;

    moving the start point if it is discriminated in said discriminating step that no whole pattern has been extracted;

    repeating said searching and tracing step starting from the moved start point; and

    if it is discriminated in said discriminating step that a whole pattern has been extracted, outputting the extracted pattern.

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