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Proceedings Paper

Coherent Optical Pattern Recognition System For Optical Word Recognition On A Microfilm Data Base
Author(s): Joseph E. Hinds; David Casasent; Frank Caimi
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Paper Abstract

The results are provided of the second phase of a program to determine the feasibility of fabrication of a coherent optical pattern recognition system to locate all pages in a microfilm data base on which a given key word occurs. Results obtained using an optical frequency plane correlator system with weighted matched spatial filter synthesis in a scaling correlator topology have been most promising. By proper matched spatial filter synthesis and system design, correlation degradations due to various expected differences between the input and reference functions in this optical word recognition system have been decreased to acceptable levels.

Paper Details

Date Published: 4 December 1979
PDF: 8 pages
Proc. SPIE 0201, Optical Pattern Recognition, (4 December 1979); doi: 10.1117/12.965605
Show Author Affiliations
Joseph E. Hinds, Central Intelligence Agency (United States)
David Casasent, Carnegie-Mellon University (United States)
Frank Caimi, Carnegie-Mellon University (United States)


Published in SPIE Proceedings Vol. 0201:
Optical Pattern Recognition
David P. Casasent, Editor(s)

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