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Proceedings Paper

Laboratory implementation of optimal filter algorithms for coupled spatial light modulators
Author(s): Stanley E. Monroe Jr.; Colin Soutar; Richard D. Juday
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Paper Abstract

The classical matched filter used as the basis for optical correlation filters requires a spatial light modulator (SLM) which can effect fully complex modulation. Practical (single) SLMs cannot achieve this modulation, but many can be made to operate in a `phase-mostly' or `amplitude-mostly' mode. Successful correlators have been constructed using phase-mostly SLMs in the filter plane by disregarding the usually small coupling of amplitude. During the last few years, new theories have been developed on the construction of filters for coupled modulators for a variety of metrics. The liquid crystal cell modulator, which can be operated in a variety of coupled modes, presents a unique opportunity to implement these algorithms. This paper reports on such laboratory measurements.

Paper Details

Date Published: 25 October 1993
PDF: 6 pages
Proc. SPIE 1959, Optical Pattern Recognition IV, (25 October 1993); doi: 10.1117/12.160296
Show Author Affiliations
Stanley E. Monroe Jr., Lockheed Engineering and Sciences Co. (United States)
Colin Soutar, NASA Johnson Space Ctr. (Canada)
Richard D. Juday, NASA Johnson Space Ctr. (United States)

Published in SPIE Proceedings Vol. 1959:
Optical Pattern Recognition IV
David P. Casasent, Editor(s)

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