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Proceedings Paper

Novel approach to real-time joint-Fourier transform correlation
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Paper Abstract

Current methods for real-time optical correlation employing a jointFourier transform approach use a spatial light modulator (SLM) in the focal plane to store the interference intensity which is subsequently read out by coherent light. Because the resolution required for accurate representation of the image transform is extremely high the spatial light modulators which meet the specifications are prohibitively expensive. We propose a novel approach to jointFourier transform correlation (JTC). The method obviates the use of the spatial light modulator in the focal plane and still preserves the real time aspects of the measurements. The approach incorporates the use of acousto-optic technology for optical mixing SLMs for image representation and electronically tuned detection of the heterodyne optical signal.

Paper Details

Date Published: 1 July 1990
PDF: 2 pages
Proc. SPIE 1319, Optics in Complex Systems, (1 July 1990); doi: 10.1117/12.34769
Show Author Affiliations
Ting-Chung Poon, Virginia Polytechnic Institute and State Univ. (United States)
Ronald J. Pieper, Virginia Polytechnic Institute (United States)

Published in SPIE Proceedings Vol. 1319:
Optics in Complex Systems
F. Lanzl; H.-J. Preuss; G. Weigelt, Editor(s)

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