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Image enhancement through discrete patch optimization

  • US 8,571,349 B1
  • Filed: 09/14/2012
  • Issued: 10/29/2013
  • Est. Priority Date: 04/27/2009
  • Status: Active Grant
First Claim
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1. A computer-implemented method of enhancing an image, comprising:

  • receiving an original image;

    automatically defining, by a processor, a set of sites for the original image, each site being a candidate to be patched and having a first resolution;

    receiving one or more images related to the original image; and

    for a first site of the set of sites, performing operations comprising;

    identifying a plurality of candidate labels from the one or more related images, each candidate label being a pixel region of one of the related images that is a potential patch for the first site and that has a second resolution higher than the first resolution;

    producing down-sampled label data by converting a label of the candidate labels from the second resolution to the first resolution;

    performing a pixel-by-pixel comparison of pixels in the down-sampled label data with corresponding pixels of the first site;

    determining a degree of difference between the label and the first site based on the pixel-by-pixel comparison;

    automatically selecting the label as a patch for the first site, the label selected responsive at least in part to the degree of difference between the label and the first site; and

    enhancing the image by applying the patch to the first site.

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