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

fYear

1998

fDate

4-7 Oct 1998

Firstpage

702

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 1998. ICIP 98. Proceedings. 1998 International Conference on

Conference_Location

Chicago, IL

Print_ISBN

0-8186-8821-1

Type

conf

DOI

10.1109/ICIP.1998.727356

Filename

727356