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1 January 1987 Rotation Invariant Pattern Recognition
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Proceedings Volume 0813, Optics and the Information Age; (1987)
Event: 14th Congress of the International Commission for Optics, 1987, Quebec, Canada
This paper reports on recent progress on invariant pattern recognition. Circular harmonic component (CHC) matched filters allow pattern recognition that is invariant under translations and rotations of the objects, and does not require segmentation of the object from its background. Now that the problem of the proper center for expansion of the filter has been solved, it has become easier to use such filters. The performance of the filter may be improved without using multiple filters by using composite CHC filters. When both target discrimination and sidelobe reduction are required, a composite filter that is an average between two composite filters must be used. The use of other invariant features is discussed.
© (1987) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Henri H. Arsenault "Rotation Invariant Pattern Recognition", Proc. SPIE 0813, Optics and the Information Age, (1 January 1987);

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