The U.S. Army Missile Command is investigating several optical correlator systems for target acquisition, recognition, and tracking. The correlation signal is often less than ideal and surrounded by a very noisy background. A morphological approach to noise rejection in the correlation plane could enhance the performance of these systems.A morphological algorithm, realized via threshold decomposition, has been tested to provide noise rejection in the correlation plane of an optical correlator system. The peak-signal-to-peak-noise ratio has been greatly enhanced, and this algorithm lends itself to implementation as a real-time (video frame rate) processor.
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