Perfect reconstruction recursive QMF banks for image subband coding
- 9 December 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- No. 10586393,p. 746-750
- https://doi.org/10.1109/acssc.1991.186547
Abstract
A scheme for implementing a perfect reconstruction QMF (quadrature mirror filter) bank is considered. The scheme is based on a uniform DFT (discrete Fourier transform) L-band analysis filter bank realized using a polyphase decomposition of a lowpass L-th band filter (composed of stable allpass subfilters) followed by an L-band synthesis filter bank (realized using the transpose of the analysis filter bank with the allpass filters replaced by their inverse filters). In the subband coding of finite-length sequences, the instability problem of the inverse filters can be avoided by using the original stable allpass filter in each branch of the synthesis bank with time-reversed input and output. Conditions for perfect reconstruction are derived and illustrated with examples.<>Keywords
This publication has 7 references indexed in Scilit:
- IIR filterbank for subband coding of imagesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Application of an efficient parallel IIR filter bank to image subband codingSignal Processing, 1990
- Multirate digital filters, filter banks, polyphase networks, and applications: a tutorialProceedings of the IEEE, 1990
- Subband coding of images using vector quantizationIEEE Transactions on Communications, 1988
- Sub-band coding of monochrome and color imagesIEEE Transactions on Circuits and Systems, 1988
- Recursive Nth-band digital filters- Part I: Design and propertiesIEEE Transactions on Circuits and Systems, 1987
- Subband coding of imagesIEEE Transactions on Acoustics, Speech, and Signal Processing, 1986