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Detection Of Motion With A Phase-Conjugate MirrorPhotorefractive image-processing apparatus generates images of rapidly moving objects and suppresses images of stationary and slowly moving objects. Resembles apparatus described in article, "Improved Interferometric Photorefractive Optical Processor", NPO-17773. Principle of operation similar, except system includes two video cameras and instead of transparencies, electro-optical spatial light modulators used to impress image information from video camera on laser beams.
Document ID
19910000507
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Cheng, Li-Jen (Caltech)
Liu, Tsuen-Hsi (Caltech)
Date Acquired
August 14, 2013
Publication Date
October 1, 1991
Publication Information
Publication: NASA Tech Briefs
Volume: 15
Issue: 10
ISSN: 0145-319X
Subject Category
Physical Sciences
Report/Patent Number
NPO-17784
ISSN: 0145-319X
Report Number: NPO-17784
Accession Number
91B10507
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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