25 October 1989 Composite Pattern Recognition Using The Nonlinear Triple Processor
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Proceedings Volume 1134, Optical Pattern Recognition II; (1989); doi: 10.1117/12.961629
Event: 1989 International Congress on Optical Science and Engineering, 1989, Paris, France
Abstract
Real-time spatial domain image correlation and convolution were first demonstrated by White and Yariv using four-wave mixing in photorefractive nonlinear materials, but the full three channel input capability has not been exploited. We report experimental studies showing the application of the third input channel for composite pattern recognition and real-time spatial filtering of correlations or phase conjugate images. Potential applications are discussed for programmable image comparison, optical transformations to solve rotation and scale variance, and an all-optical cellular automaton computer.
© (1989) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Lawrence H. Domash, Conrad M. Gozewski, "Composite Pattern Recognition Using The Nonlinear Triple Processor", Proc. SPIE 1134, Optical Pattern Recognition II, (25 October 1989); doi: 10.1117/12.961629; https://doi.org/10.1117/12.961629
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KEYWORDS
Crystals

Laser crystals

Phase conjugation

Convolution

Composites

Image processing

Spatial frequencies

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