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A Set of Invariants Within the Power Spectrum of Unitary Transformations
December 1978 (vol. 27 no. 12)
pp. 1213-1216
S. Wendling, Laboratory of Artificial Intelligence, University of Besancon
This correspondence presents a device for designing unitary transformations based on the Hadamard transform process. The notion of "invariants" within the power spectrum of one-dimensional transformations is developed and the specific case of some widespread transformations is considered. The results are extended to two-dimensional transformations and a character recognition experiment using the invariants thus obtained is presented.
Index Terms:
power spectrum, Character recognition, Hadamard?Haar?Fourier transform, metric invariants by translation
Citation:
S. Wendling, G. Gagneux, G. Stamon, "A Set of Invariants Within the Power Spectrum of Unitary Transformations," IEEE Transactions on Computers, vol. 27, no. 12, pp. 1213-1216, Dec. 1978, doi:10.1109/TC.1978.1675030
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