Space-variant optical correlation by the use of random binary phase modulation
Author:
Ruikang K. Wang a
| Affiliation: | a Centre for Science and Technology in Medicine, School of Postgraduate Medicine, Keele University, Stoke-on-Trent, England |
DOI:
10.1080/09500349808231922
Publication Frequency:
21 issues per year
Subjects:
Fibre Optics;
Optics & Optoelectronics.;
Optics, Optoelectronic Effects, Devices & Systems;
Optoelectronics;
Theoretical Physics;
Formats available:
PDF
(English)
Previously published as:
Optica Acta: International Journal of Optics
(0030-3909)
until 1987
View Article:
View Article (PDF)
Abstract
A simple method to achieve space-variant pattern recognition is proposed with a typical VanderLugt arrangement, in which the input pattern is modulated by a random binary phase function. The output correlation location can be programmed into the filter function. With the introduction of random binary phase modulation, the impulse response of either phase-only or binary phase-only filter function is not edge enhanced, resulting in higher Horner efficiency. Computer simulations are conducted to verify the proposed method.
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