Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
January 19, 2010
Patent Application Number
11041438
Date Filed
January 25, 2005
Patent Citations Received
Patent Primary Examiner
Patent abstract
The present invention can extract a change not only from an orthorectified image but also from a plurality of images captured at different camera positions, under different lighting conditions, at different angles, and at different scaling factors. Foot-print information is extracted from each of images to be compared, and a change is detected by comparing the foot-print information.
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