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Method and a device for matching images

  • US 6,563,951 B2
  • Filed: 02/17/1998
  • Issued: 05/13/2003
  • Est. Priority Date: 12/30/1997
  • Status: Expired due to Fees
First Claim
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1. A method for matching a first and a second image, each consisting of a plurality of binary pixels and having partially overlapping contents, the degree of correspondence between the contents of the images being determined for different displacement positions which represent different overlappings of the images, comprising the following steps:

  • determining a correlation score retrieval number for each of a plurality of coarse displacement positions of said first image relative to said second image, each correlation score retrieval number being determined from at least two pixel values from each image corresponding to each coarse displacement position, using said correlation score retrieval number to retrieve corresponding predefined correlation scores for at least two fine displacement positions simultaneously, and using the correlation scores in determining the degree of correspondence between the contents of the images.

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