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Image registration using locally-weighted fitting

  • US 20070223794A1
  • Filed: 03/21/2006
  • Published: 09/27/2007
  • Est. Priority Date: 03/21/2006
  • Status: Active Grant
First Claim
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1. A computer-implemented method for image registration, comprising:

  • accepting a three-dimensional (3-D) image of an organ, the image comprising a first plurality of image points with respective image coordinates;

    accepting a map defining a distribution of values of a physiological parameter over the organ, the map comprising a second plurality of map points with respective map coordinates;

    associating respective confidence levels with one or more of the map coordinates and image coordinates;

    assigning weights to at least some of the map points and image points responsively to the confidence levels of the respective map coordinates and image coordinates; and

    fitting the 3-D image with the map by calculating a geometrical transformation between the map coordinates and the image coordinates based on the weights.

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