Title :
Design of 2-D digital filters with octagonal passband and stopband boundaries
Author :
Shpak, Dale J. ; Antoniou, Andreas
Author_Institution :
Dept. of Eng., R. Roads Mil. Coll., Victoria, BC, Canada
fDate :
12/1/1991 12:00:00 AM
Abstract :
A method for the design of 2-D digital filters with octagonal passband and stopband boundaries is described. The method involves cascading four 1-D FIR (finite impulse response) or IIR (infinite impulse response) digital filters. Consequently, it is easy to apply and leads to fast, economical, and efficient designs. By choosing appropriate passband- and stopband-edge frequencies for the 1-D filters, 2-D filters with approximately circular or elliptical passband and stopband boundaries can readily be designed. Additionally, it is possible to realize causal 2-D IIR filters with linear-phase passbands by using 1-D IIR filters having linear-phase passbands
Keywords :
band-pass filters; cascade networks; two-dimensional digital filters; 2D digital filters; FIR; IIR; cascade networks; causal filters; circular boundaries; elliptical boundaries; linear-phase passbands; octagonal boundaries; passband boundaries; passband-edge frequencies; stopband boundaries; stopband-edge frequencies; Band pass filters; Design methodology; Design optimization; Digital filters; Finite impulse response filter; Frequency domain analysis; IIR filters; Matrix decomposition; Passband; Two dimensional displays;
Journal_Title :
Circuits and Systems, IEEE Transactions on
