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Pattern searching method using neural networks and correlation

  • US 5,696,838 A
  • Filed: 01/23/1995
  • Issued: 12/09/1997
  • Est. Priority Date: 04/27/1993
  • Status: Expired due to Term
First Claim
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1. A method for locating a target pattern in an image, comprising the steps of:

  • dividing said image into a first plurality of sub-images, said dividing occurring without regard for image content;

    processing each of said first plurality of sub-images with a neural network to select therefrom a second set of sub-images each of which includes at least a portion of a candidate pattern;

    generating, based on said second set of sub-images, a third set of sub-images, each containing a candidate pattern at an estimated center thereof;

    processing each of said third set of sub-images with a neural network to generate a fourth set of sub-images each containing a candidate pattern; and

    processing said fourth set of sub-images with a correlator to determine if each of said fourth set of sub-images actually contains said target pattern.

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