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Image comparison by asymmetric dynamic warping

  • US 8,405,681 B2
  • Filed: 06/24/2009
  • Issued: 03/26/2013
  • Est. Priority Date: 06/24/2009
  • Status: Expired due to Fees
First Claim
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1. A method for image comparison, comprising:

  • reading from a memory in a computerized image processor a source image and a target image;

    segmenting the source and target images, using the image processor, into respective pluralities of source and target arrays, respectively comprising source and target array elements, each array element comprising a matrix of one or more pixels from a respective image, each of the source arrays having a respective position in the source image, and each of the target arrays corresponding respectively to one of the source arrays based on the respective position;

    applying an asymmetric warping process between each of the source arrays and each of the respectively corresponding target arrays so as to compute respective array similarity scores; and

    combining the respective array similarity scores so as to compute an image similarity score of the target image with respect to the source image.

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