Title :
Design of polar-separable FIR filters by radial slice approximations
Author :
Rau, Richard ; McClellan, James H.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
We introduce the design of polar-separable 2-D FIR filters by radial slice approximations (RSA). It is a two step procedure. First, 1-D filters for the radial and the angular components are designed. Then the desired filter response is approximated on many radial slices in a weighted mean square sense. In the case of circular filters, RSA outperforms other design procedures in terms of ripple size and circularity of the passband. Examples of filters with nonconstant angular functions prove the flexibility of the new method
Keywords :
FIR filters; approximation theory; band-pass filters; deconvolution; filtering theory; frequency response; frequency-domain synthesis; low-pass filters; two-dimensional digital filters; 2D FIR filters; circular filters; deconvolution problem; equiripple filter; filter response; nonconstant angular functions; passband circularity; polar-separable filter design; radial slice approximations; ripple size; signal processing; weighted mean square approximation; Contracts; Deconvolution; Design engineering; Equations; Finite impulse response filter; Frequency domain analysis; Frequency response; Kernel; Passband; Signal design;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on
Conference_Location :
Munich
Print_ISBN :
0-8186-7919-0
DOI :
10.1109/ICASSP.1997.599479
