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Optical Engineering

Rotation-invariant synthetic discriminant function filter for pattern recognition
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Paper Abstract

The ring synthetic discriminant function (RSDF) filter for rotation-invariant response is discussed for pattern recognition. This method uses one half of a slice of the Fourier transform of the object to generate the transfer function of the filter. This is accomplished by rotating the one half of a slice in the Fourier domain through 2? rad about the zero-frequency point of the Fourier plane. This filter has the advantage of always matching at least one half of a slice of the Fourier transform of any rotation of the image. An analytical discussion of the filter construction and correlation results are presented along with simulated correlation results for a particular target image. These results and established metrics are used for comparison with benchmark algorithms.

Paper Details

Date Published: 1 May 2000
PDF: 6 pages
Opt. Eng. 39(5) doi: 10.1117/1.602479
Published in: Optical Engineering Volume 39, Issue 5
Show Author Affiliations
Vahid R. Riasati, Univ. of South Alabama (United States)
Partha P. Banerjee, Univ. of Alabama in Huntsville (United States)
Mustafa A. G. Abushagur, Photronix SDN BHD (United States)
Kenneth B. Howell, Univ. of Alabama in Huntsville (United States)


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