Title :
Least-asymmetric signal extension for two-band paraunitary FIR filter banks
Author :
Niehsen, Wolfgang ; Brünig, Michael
Author_Institution :
Inst. fur Elektrische Nachrichtentech., Tech. Hochschule Aachen, Germany
Abstract :
An algorithm for least-asymmetric signal extension for two-band paraunitary FIR filter banks is derived. The development of the algorithm is governed by the symmetric signal extension method for perfect reconstruction filter banks with even-length linear-phase filters. The approach yields an equality-constrained least-squares problem which is solved efficiently. The computational load is evaluated and simulation results for comparison of least-asymmetric and circular signal extension are presented
Keywords :
FIR filters; channel bank filters; filtering theory; image reconstruction; image sequences; least squares approximations; linear phase filters; circular signal extension; computational load; equality-constrained least-squares problem; even-length linear-phase filters; image sequence; least-asymmetric signal extension; perfect reconstruction filter banks; simulation results; two-band paraunitary FIR filter banks; Channel bank filters; Computational modeling; Delay; Energy conservation; Filter bank; Finite impulse response filter; Frequency; Image coding; Image reconstruction; Signal synthesis;
Conference_Titel :
Image Processing, 1998. ICIP 98. Proceedings. 1998 International Conference on
Conference_Location :
Chicago, IL
Print_ISBN :
0-8186-8821-1
DOI :
10.1109/ICIP.1998.727356
