NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Self-Amplified Optical Pattern RecognizerSelf-amplified optical pattern recognizers developed for use in recognition of patterns, in optical computing, and in optoelectronic neural networks. In recognizer, photorefractive crystal serves as medium in which one holographically records diffraction-grating filter representing pattern with which recognition sought. Apparatus "self-amplified" because signal amplified within filter to many orders of magnitude greater than in prior optical pattern recognizers. Basic principle of operation applicable to many types of correlation filters, including (but not limited to) Vander Lugt matched filters, joint-transform filters, and phase-only filters.
Document ID
19930000269
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Liu, Hua-Kuang
(Caltech)
Date Acquired
August 16, 2013
Publication Date
May 1, 1993
Publication Information
Publication: NASA Tech Briefs
Volume: 17
Issue: 5
ISSN: 0145-319X
Subject Category
Physical Sciences
Report/Patent Number
NPO-18009
Accession Number
93B10269
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Available Downloads

There are no available downloads for this record.
No Preview Available