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3-D IIR filtering using decimated DFT-polyphase filter bank structures

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2 Author(s)
Kuenzle, B. ; Dept. of Electr. & Comput. Eng., Univ. of Calgary, Alta., Canada ; Bruton, L.T.

Two three-dimensional (3-D) under-decimated uniform discrete Fourier transform polyphase filter bank structures are proposed along with two applications: first, the sub-pixel motion discrimination of two-dimensional spatial objects moving with approximately constant local velocity in a noisy 3-D spatio-temporal image sequence and, second, the selective filtering of 3-D spatio-temporal broad-band plane waves based on their directions of arrival. The desired 3-D filter passband shapes are realized utilizing combinations of highly selective first-order 3-D infinite-impulse response frequency-planar filters in each band between the analysis and synthesis sections. Measured spatio-temporal performance confirms the high-quality broad-band transmission of passband signals, high directional selectivity and low computational complexity.

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Circuits and Systems I: Regular Papers, IEEE Transactions on  (Volume:53 ,  Issue: 2 )