Self-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.
Self-Amplified Optical Pattern Recognizer
NASA Tech Briefs ; 17 , 5
1993-05-01
Miscellaneous
No indication
English
Syntactic pattern recognizer for vehicle identification numbers
British Library Online Contents | 1995
|Self-amplified optical pattern recognition (Invited Paper) [2321-196]
British Library Conference Proceedings | 1994
|British Library Online Contents | 1996
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