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 2π 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.
Copyright © 2000, Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Society of Photo-Optical Instrumentation Engineers (SPIE)
Riasati, Vahid R.; Banerjee, Partha P.; Abushagur, Mustafa A. G.; and Howell, Kenneth B., "Rotation-Invariant Synthetic Discriminant Function Filter for Pattern Recognition" (2000). Electrical and Computer Engineering Faculty Publications. 268.
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