Real-time adaptive optical joint transform correlator

Tien-Hsin Chao; George F. Reyes; Youngchul Park; David Collins

doi:10.1117/12.304788

23 March 1998 Real-time adaptive optical joint transform correlator

Tien-Hsin Chao, George F. Reyes, Youngchul Park, David Collins

Proceedings Volume 3386, Optical Pattern Recognition IX; (1998) https://doi.org/10.1117/12.304788
Event: Aerospace/Defense Sensing and Controls, 1998, Orlando, FL, United States

Abstract

A real-time optical joint transform correlator (OJTC) has been developed for direct-input optical correlation operation. Innovative features of this OJTC include: (1) two separate spatial light modulators, one for large-frame video rate input, the other for high-speed reference updating; and (2) a multiple quantum well holographic device (MQHD) for high-speed joint transform power spectrum detection and read-out. These system innovations have enabled real-time adaptive optical joint transform correlation to accommodate scale, rotation, and other variations required for real-world pattern recognition applications. System architecture and analysis will be depicted. Experimental results of invariant landmark tracking using this OJTC will be provided.

Citation Download Citation

Tien-Hsin Chao, George F. Reyes, Youngchul Park, and David Collins "Real-time adaptive optical joint transform correlator", Proc. SPIE 3386, Optical Pattern Recognition IX, (23 March 1998); https://doi.org/10.1117/12.304788

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