Title :
Spatially adaptive IIR analysis-synthesis filter banks for image coding
Author :
Smith, Mark J T ; Chung, Wilson C.
Author_Institution :
Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
Infinite-impulse-response (IIR) time-varying filter banks and their application to finite-support signals are analysed. The filter bank is based on computationally efficient recursive polyphase sections that dynamically change in response to the input signal. In the absence of quantization, reconstruction can be made exact. By proper choice of an adaptation scheme, it is shown that time varying filter banks can yield improvement over conventional ones
Keywords :
Z transforms; adaptive filters; digital filters; filtering and prediction theory; image coding; time-domain analysis; time-varying networks; IIR analysis-synthesis filter banks; Z-transform domain analysis; finite-support signals; image coding; infinite impulse response filters; recursive polyphase sections; spatially adaptive filters; time varying filter banks; time-domain analysis; Channel bank filters; Computational efficiency; Filter bank; Finite impulse response filter; Image analysis; Image coding; Image reconstruction; Signal analysis; Signal synthesis; Time varying systems;
Conference_Titel :
Signals, Systems and Computers, 1992. 1992 Conference Record of The Twenty-Sixth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-8186-3160-0
DOI :
10.1109/ACSSC.1992.269144
