The design of signal-adapted multirate filter banks has been an area of research interest. The authors present the design of a 2-D finite impulse response (FIR) compaction filter followed by a 2-D FIR filter bank that packs the maximum energy of the input process into a few subbands. The energy compaction property of the 2-D compaction filter is extremely good for higher filter orders and converges to the ideal optimal solution as the order tends to infinity. The design procedure is very straightforward and involves a 2-D spectral factorisation.
|Number of pages||9|
|Journal||IEE Proceedings - Vision, Image and Signal Processing|
|Publication status||Published - 2001|
Vijayakumar, N., & Prabhu, K. M. M. (2001). Two-dimensional FIR compaction filter design. IEE Proceedings - Vision, Image and Signal Processing, 148(3), 173-181. https://doi.org/10.1049/ip-vis:20010186