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Proceedings Paper

Selection of LCTV operating curves for input and filter
Author(s): Richard D. Juday; Jennifer Lacroix; P. Karivaratha Rajan
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Paper Abstract

A liquid crystal television (LCTV) SLM's phase, amplitude, and polarization all influence our selection of operating curves for input and filter. With its continuum of drive voltage, the LCTV permits grey-level control in both locations. Selection of an optimum curve depends on expected variations in signal amplitude, presence of input scene structured noise, and other factors. Using modulators obtained from a commercially available projection LCTV, and with no specifically added input noise present, we have obtained laboratory results in which the ratio of peak intensity to correlator system noise exceeded 100:1. Unfortunately, it was massively inefficient to implement the algorithm which had been developed as the abstract for this paper was submitted. Fortunately, we have quite recently developed two insights that will speed it by several orders of magnitude, and we shall report that result in the future. We will also extend the work to include clutter objects and additive input scene noise.

Paper Details

Date Published: 1 July 1992
PDF: 5 pages
Proc. SPIE 1701, Optical Pattern Recognition III, (1 July 1992); doi: 10.1117/12.138313
Show Author Affiliations
Richard D. Juday, NASA Johnson Space Ctr. (United States)
Jennifer Lacroix, NASA Johnson Space Ctr. (United States)
P. Karivaratha Rajan, Tennessee Technological Univ. (United States)


Published in SPIE Proceedings Vol. 1701:
Optical Pattern Recognition III
David P. Casasent; Tien-Hsin Chao, Editor(s)

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