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| Paper: | SPTM-P11.2 |
| Session: | Filter Banks and Subband Coding |
| Time: | Friday, May 21, 09:30 - 11:30 |
| Presentation: |
Poster |
| Topic: |
Signal Processing Theory and Methods: Multi-rate Signal Processing & Wavelets |
| Title: |
DYADIC-BASED FACTORIZATIONS FOR REGULAR PARAUNITARY FILTER BANKS |
| Authors: |
Ying-Jui Chen; Massachusetts Institute of Technology | | |
| | Soontorn Oraintara; University of Texas, Arlington | | |
| | Kevin Amaratunga; Massachusetts Institute of Technology | | |
| Abstract: |
M-channel paraunitary filter banks (PUFBs) can be designed and implemented using either degree-one or order-one dyadic-based factorization. This paper summarizes how regularity of a desired degree is structurally imposed on such factorizations for any number of channels M>=2 and any phase responses. The regularity conditions are found to be conveniently expressed in terms of recently reported M-channel lifting structures, which allow fast and reversible implementations. Design examples are presented and they outperform previously reported ones in transform-based image coding. |
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