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Proceedings Paper

Some limitations on optical filtering imposed by physical systems
Author(s): Richard D. Juday
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Paper Abstract

Until recently, optimal filter theory has not explicitly included several limitations imposed by the physical nature of spatial light modulators and detectors. We review recent theory that includes colored input noise; finite magnitude and finite contrast ratio of a spatial light modulator; single-drive spatial modulators that couple their effect between amplitude and phase, or are limited to real values; and electronic noise in correlation detection. We set up a signal to noise metric to optimize, and we use several approaches to its optimization. One is the Cauchy-Schwartz inequality, another is differential calculus (variational calculus and partial differential equations), and the third is a relaxation similar to annealing.

Paper Details

Date Published: 1 April 1992
PDF: 17 pages
Proc. SPIE 10262, Optical Pattern Recognition: A Critical Review, 102620D (1 April 1992); doi: 10.1117/12.59857
Show Author Affiliations
Richard D. Juday, NASA/Johnson Space Ctr. (United States)


Published in SPIE Proceedings Vol. 10262:
Optical Pattern Recognition: A Critical Review
Joseph L. Horner; Bahram Javidi, Editor(s)

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