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Pattern matching apparatus

  • US 6,804,387 B1
  • Filed: 07/28/2000
  • Issued: 10/12/2004
  • Est. Priority Date: 08/27/1999
  • Status: Expired due to Fees
First Claim
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1. A pattern matching apparatus performing a pattern matching while comparing a template picture with a picture under inspection, said apparatus comprising:

  • maximum score detection means for shifting the template picture with respect to the picture under inspection in order to compute matching scores between the two pictures and thereby to detect a maximum score among the matching scores as well as a maximum position in which the maximum score is generated;

    means for computing a correction value based on matching scores generated at positions adjacent to said maximum position; and

    means for correcting said matching score by adding said maximum score with said correction value.

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