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Sub-pixel accuracy and valid correlation signal detection by forward and reverse correlation

  • US 7,961,954 B2
  • Filed: 08/19/2009
  • Issued: 06/14/2011
  • Est. Priority Date: 06/01/2006
  • Status: Active Grant
First Claim
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1. A method of calculating a correlation peak comprising:

  • determining a forward correlation peak from a forward correlation between a first image and a second image;

    determining a reverse correlation peak from a reverse correlation between the second image and the first image;

    validating the forward correlation peak;

    validating the reverse correlation peak; and

    combining the forward correlation peak and the reverse correlation peak to provide a combined correlation peak,wherein the determining, the validating, and the combining steps are performed using one or more computing devices.

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