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Method of image processing using parametric template matching

  • US 5,943,442 A
  • Filed: 06/03/1997
  • Issued: 08/24/1999
  • Est. Priority Date: 06/12/1996
  • Status: Expired due to Fees
First Claim
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1. A template matching method for matching an image with a plurality of template images to detect the maximum correlation value therebetween, comprising the steps of:

  • (a) calculating an inverse matrix H-1 of a correlation matrix H using, as its elements, normalized correlations between a plurality of first template images;

    (b) calculating a normalized correlation between a normalized image of each of a plurality of normalized first template images and at least one normalized second template image to obtain a correlation vector G; and

    (c) calculating, from said correlation vector G and said inverse matrix H-1, an estimated parameter w that maximizes a normalized correlation between said normalized second template image and a normalized interpolated template image obtained by linearly combining, by said estimated parameter w, said normalized first template images.

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