Patent ID: 7643703

Claim:
A method of identifying differences between a pair of images, comprising: loading a source image and a target image into memory of a computer; constructing source and target edge images from the source and target images to enable processing of multiband images; displaying the source and target images on a display device of the computer; automatically aligning the source and target edge images by: a) computing figure of merit values for the source and target edge images; b) computing separation and ratio values for the source and target edge images; c) constructing small image versions of the source and target edge images; d) computing remap coefficients for the small image versions of the source and target edge images; e) remapping the small image versions using the remap coefficients; f) determining intensity peaks in the small image versions of the source and target edge images; and g) matching intensity peaks in the source and target edge images; and switching displaying of the source image and the target image on the display device to enable identification of differences between the source image and the target image.