Patent ID: 6738532
Filing Date: 2004-05-18
Classification: G06K,G06T

Abstract:
A method of registering images comprising:capturing a first original image of a scene under surveillance; capturing a second original image of said scene under surveillance; coarsely matching said first original image to said second original image to give approximate angle and offset parameters of said first original image to said second original image; finely matching said first original image to said second original image based on the approximate angle and offset parameters of said coarsely matching step; reducing said first original image to form a second reduced first original image having a common scenic scale as said second original image so that scenic objects appearing in both images have a common extent; and rotating the second reduced first original image by a rotational difference between the first and second original images to form a second rotated and reduced first original image; wherein the finely matching step further comprises selecting a plurality of first offset patch images from the second rotated and reduced first original image from a grid of pre-selected locations uniformly and symmetrically spread around an extent of the second rotated and reduced first original image.