Patent ID: 7362920
Filing Date: 2008-04-22
Classification: G06K,G06T

Abstract:
1. A method of aligning a pair of images comprising the steps of: providing a pair of images with a first image and a second image, wherein said images comprise a plurality of intensities corresponding to a domain of points in a D-dimensional space, identifying salient feature regions in both the first image and the second image, including computing, for each pixel x in one image in the pair of images, a local entropy for one or more regions of scale s about pixel x; hypothesizing a correspondence between each pair of salient feature regions, wherein a first region of each pair is on the first image and a second region of each pair is on the second image; measuring the likelihood of the hypothesized correspondence of each pair of feature regions; and determining a joint correspondence from a set of pairs of feature regions with the greatest likelihood of corrcspondence.