Optical pattern recognition using circular harmonic expansion
- 15 November 1982
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 21 (22), 4016-4019
- https://doi.org/10.1364/ao.21.004016
Abstract
Presented in this paper is an optical implementation of a shift- and rotation-invariant pattern recognition technique. A computer-generated hologram is designed to match with one of the circular harmonic components of the target. Experimental results with simple photographic objects show that targets with different locations and orientations can be simultaneously recognized by the optical system.Keywords
This publication has 11 references indexed in Scilit:
- Rotation-invariant digital pattern recognition using circular harmonic expansionApplied Optics, 1982
- Digital multiple correlation for pattern recognitionApplied Optics, 1982
- Incoherent method for rotation-invariant recognitionApplied Optics, 1982
- Hybrid optical processor for pattern recognition and classification using a generalized set of pattern functionsApplied Optics, 1982
- Circular harmonic image reconstruction: experimentsApplied Optics, 1981
- Aerial reconnaissance film screening using optical matched-filter image-correlator technologyApplied Optics, 1978
- Optical reconstruction from projections via circular harmonic expansionOptics Communications, 1978
- Deformation invariant optical processors using coordinate transformationsApplied Optics, 1977
- Representation of a Function by Its Line Integrals, with Some Radiological Applications. IIJournal of Applied Physics, 1964
- Representation of a Function by Its Line Integrals, with Some Radiological ApplicationsJournal of Applied Physics, 1963