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Proceedings Paper

Incoherent Optical Correlators
Author(s): David Casasent; Neil Carender; James Connelly
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Paper Abstract

Optical correlators utilizing spatially incoherent light are examined and compared with coherent correlators. Frequency and image domain optical correlator architectures are discussed. The effect of speckle noise and input noise is examined. Simplified linear systems and Fourier transform descriptions of incoherent processors are provided. Simulation results are presented to quantitatively compare the performance of coherent and incoherent systems processing inputs containing additive noise. We consider pattern recognition correlator applications, rather than imaging systems in which the SNR of incoherent systems is better. For pattern recognition applications, SNR, PSR, and discrimination effects are very different as we show.

Paper Details

Date Published: 1 April 1990
PDF: 17 pages
Proc. SPIE 1194, Optics, Illumination, and Image Sensing for Machine Vision IV, (1 April 1990); doi: 10.1117/12.969843
Show Author Affiliations
David Casasent, Carnegie-Mellon University (United States)
Neil Carender, Carnegie-Mellon University (United States)
James Connelly, Carnegie-Mellon University (United States)

Published in SPIE Proceedings Vol. 1194:
Optics, Illumination, and Image Sensing for Machine Vision IV
Donald J. Svetkoff, Editor(s)

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