Real-time optical generation of circular or Mellin radial-harmonic filters
- 1 February 1990
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America A
- Vol. 7 (2) , 225-230
- https://doi.org/10.1364/josaa.7.000225
Abstract
Invariant pattern-recognition systems use spatial filters that are, in most cases, computer-generated holograms. A novel approach for the optical generation of circular-harmonic or radial-harmonic filters is presented, together with experimental results.Keywords
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