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Optical Engineering

Real-Time Image Subtraction Using A Liquid Crystal Light Valve
Author(s): E. Marom
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Paper Abstract

A technique for subtracting images in real time utilizing a single liquid crystal light valve (LCLV) is described. The two images are projected in registration on the LCLV through a common grating. The projections are chosen such that the grating's image due to one beam is complementary to that displayed by the second beam, thus generating an interlacing effect. The readout light beam is optically filtered, so that only different features in the two images are revealed. Experimental results are presented.

Paper Details

Date Published: 1 February 1986
PDF: 3 pages
Opt. Eng. 25(2) 252274 doi: 10.1117/12.7973815
Published in: Optical Engineering Volume 25, Issue 2
Show Author Affiliations
E. Marom, Hughes Research Laboratories (United States)

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