1 April 1989 Symbolic Substitution Implemented By Spatial Filtering Logic
Author Affiliations +
Abstract
Symbolic substitution is a method of performing parallel optical logic by recognition and substitution of structural elements. With spatial filtering it is possible to perform logic operations without an active logic gate. This paper describes how symbolic substitution can be implemented optically by use of spatial filtering. Earlier implementations used an additive logic, where shifted versions of the input pattern were added and then thresholded. Our new method is a multiplicative method that sequentially tests the pattern elements.
Karl-Heinz Brenner, Karl-Heinz Brenner, Adolf W. Lohmann, Adolf W. Lohmann, Thomas M. Merklein, Thomas M. Merklein, } "Symbolic Substitution Implemented By Spatial Filtering Logic," Optical Engineering 28(4), 284390 (1 April 1989). https://doi.org/10.1117/12.7976966 . Submission:
JOURNAL ARTICLE
6 PAGES


SHARE
RELATED CONTENT

Digital Optical Iterative Pattern Recognizer
Proceedings of SPIE (May 03 1988)
Symbolic Substitution Methods For Optical Computing
Proceedings of SPIE (February 08 1988)
Optical logic elements based on fiber Bragg reflectors
Proceedings of SPIE (April 01 2002)
Symbolic Substitution Using Shadow-Casting
Proceedings of SPIE (February 08 1988)

Back to Top