Optical Word Recognition By Coherent Optical Correlation

Joseph E. Hinds; David Casasent; Frank Caimi

doi:10.1117/12.957242

10 July 1979 Optical Word Recognition By Coherent Optical Correlation

Joseph E. Hinds, David Casasent, Frank Caimi

Proceedings Volume 0177, Optical Information Storage; (1979) https://doi.org/10.1117/12.957242
Event: Technical Symposium East, 1979, Washington, D.C., United States

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.

Citation Download Citation

Joseph E. Hinds, David Casasent, and Frank Caimi "Optical Word Recognition By Coherent Optical Correlation", Proc. SPIE 0177, Optical Information Storage, (10 July 1979); https://doi.org/10.1117/12.957242

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