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Generalized symmetric extension for size-limited multirate filter banks

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3 Author(s)
R. H. Bamberger ; Dept. of Electr. Eng. & Comput. Sci., Washington State Univ., Pullman, WA, USA ; S. L. Eddins ; V. Nuri

A multirate (MR) filter bank is called size-limited if the total number of output samples equals the number of input samples. A method called symmetric extension improved performance in subband image compression systems compared to the earlier method of circular convolution. However, the symmetric extension method was developed only for two-band uniform filter banks, and required even-length linear phase analysis filters. The authors generalize the symmetric extension method to the M-band, possibly nonuniform filter banks, where M⩾2. The length restriction on the analysis filters is relaxed

Published in:

IEEE Transactions on Image Processing  (Volume:3 ,  Issue: 1 )