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Proceedings Paper

Optical Word Recognition By Coherent Optical Correlation
Author(s): Joseph E. Hinds; David Casasent; Frank Caimi
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Paper Abstract

Results are presented of an initial program to determine the feasibility of the use of a coherent optical matched spatial filter correlator for location of all pages in a microfilm database on which a given key word occurs. A modified frequency plane correlator system is used to quantify the correlation degradation effects of various differences (font, point size, etc.) expected between text inputs. The use of weighted matched spatial filter synthesis to decrease these correlation degradation effects is also analyzed. Quantitative experimental data are also included.

Paper Details

Date Published: 10 July 1979
PDF: 8 pages
Proc. SPIE 0177, Optical Information Storage, (10 July 1979); doi: 10.1117/12.957242
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. 0177:
Optical Information Storage
Kenneth G. Leib, Editor(s)

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