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Large-memory real-time multichannel multiplexed pattern recognitionThe principle and experimental design of a real-time multichannel multiplexed optical pattern recognition system via use of a 25-focus dichromated gelatin holographic lens (hololens) are described. Each of the 25 foci of the hololens may have a storage and matched filtering capability approaching that of a single-lens correlator. If the space-bandwidth product of an input image is limited, as is true in most practical cases, the 25-focus hololens system has 25 times the capability of a single lens. Experimental results have shown that the interfilter noise is not serious. The system has already demonstrated the storage and recognition of over 70 matched filters - which is a larger capacity than any optical pattern recognition system reported to date.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Gregory, D. A.
(U.S. Army, Missile Laboratory, Redstone Arsenal AL, United States)
Liu, H. K.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Date Acquired
August 12, 2013
Publication Date
December 15, 1984
Publication Information
Publication: Applied Optics
Volume: 23
ISSN: 0003-6935
Subject Category
Accession Number
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