Two dimensional nonseparable modulated filter banks

Author

Chan, S.C.

Author_Institution

Dept. of Electron. Eng., City Polytech. of Hong Kong, Kowloon, Hong Kong

Volume

iii

fYear

1994

fDate

19-22 Apr 1994

Abstract

It is well known that efficient perfect reconstruction (PR) FIR filter banks can be obtained by modulating a prototype filter. We present a class of two-dimensional nonseparable rectangular sampling PR modulated filter banks. The modulation is constrained to be separable while the prototype filter is allowed to be nonseparable. This lead to considerably simplification in the PR condition and design procedure. The resulting PR condition on the prototype is equivalent to the 4 channels PR property of a set of polyphase components. A design example of a 4-channel length (8×8) orthogonal nonseparable filter is also given to illustrate the proposed method

Keywords

FIR filters; band-pass filters; modulation; signal reconstruction; signal sampling; two-dimensional digital filters; 2D nonseparable modulated filter banks; FIR filter banks; modulated filter banks; modulation; orthogonal nonseparable filter; perfect reconstruction; polyphase components; prototype filter; rectangular sampling; Channel bank filters; Cities and towns; Design engineering; Filter bank; Finite impulse response filter; Image reconstruction; Lattices; Mirrors; Prototypes; Sampling methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on

Conference_Location

Adelaide, SA

ISSN

1520-6149

Print_ISBN

0-7803-1775-0

Type

conf

DOI

10.1109/ICASSP.1994.390070

Filename

390070