Patent ID: 8144931
Filing Date: 2012-03-27
Classification: G06K

Abstract:
1. A method for acquiring and tracking a target object comprising: constructing a plurality of complex composite digital correlation filters wherein some of said complex composite digital correlation filters are sensitive only to range of said target object, and others of said complex composite digital correlation filters are sensitive to orientation and range of said target object, obtaining a train of digital images, processing said digital images of said train of digital images for digital correlation, using a digital correlator, and where said target object is initially at a longer range, correlating processed images of said train of digital images with at least some of those said complex composite digital correlation filters that are sensitive only to range of said target object, and after a target object correlation is found, predictively selecting for correlation, said ones of said plurality of complex composite digital correlation filters based on at least range, pose and movement of said target object, tracking said target object in said at least range, pose and movement using predictively selected ones of said plurality of complex composite digital correlation filters sensitive to range and orientation of said target object.