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Template Matching Method, Template Matching Apparatus, And Recording Medium That Records Program For It

  • US 20080273800A1
  • Filed: 01/11/2006
  • Published: 11/06/2008
  • Est. Priority Date: 01/11/2005
  • Status: Active Grant
First Claim
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1. A template matching method of detecting the position of an image region similar to a template image region from on a reference image, comprising:

  • calculating the similarity of the image region to the template image region at rough position intervals;

    estimating the similarity at a position, where the similarity is not calculated, making use of the directional gradients of similarity obtained independently in a plurality of directions from the calculated values of similarity; and

    determining the position having a small calculated or estimated value of the similarity as the position of the similar image region.

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