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Proceedings Paper

Grayscale optical correlator
Author(s): Tien-Hsin Chao; George F. Reyes; Youngchul Park
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Paper Abstract

A compact (Camcorder size), ultrahigh-speed, grayscale optical correlator capable of using grayscale input and real-valued correlation filter is reported. The unique bipolar-amplitude correlation filter modulation capability has enabled the direct implementation of composite filter algorithm such as MACH[8]. The direct usage of grayscale input also eliminated the need of image preprocessing (e.g. Sobel filtering used for binary optical correlator). System architecture of this grayscale optical correlator will be described. Experimental results obtained using optically implemented MACH filter, for the first time, will also be provided.

Paper Details

Date Published: 23 March 1998
PDF: 5 pages
Proc. SPIE 3386, Optical Pattern Recognition IX, (23 March 1998); doi: 10.1117/12.304790
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)


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

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