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Proceedings Paper

Real-time adaptive optical joint transform correlator
Author(s): Tien-Hsin Chao; George F. Reyes; Youngchul Park; David Collins
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Paper 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.

Paper Details

Date Published: 23 March 1998
PDF: 5 pages
Proc. SPIE 3386, Optical Pattern Recognition IX, (23 March 1998); doi: 10.1117/12.304788
Show Author Affiliations
Tien-Hsin Chao, Jet Propulsion Lab. (United States)
George F. Reyes, Jet Propulsion Lab. (United States)
Youngchul Park, Jet Propulsion Lab. (United States)
David Collins, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 3386:
Optical Pattern Recognition IX
David P. Casasent; Tien-Hsin Chao, Editor(s)

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