Title :
Design of 2-D recursive filters having approximately circularly symmetric variable magnitude characteristics
Author :
Fallah, S. ; Ramachandran, V. ; Gargour, C.S.
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
It is shown that it is possible to obtain variable magnitude characteristics in a two-dimensional recursive digital filter. This is accomplished by the substitution of first-order allpass sections instead of the delay units in the realized filter. Coefficient conditions are obtained so that the various filters are stable and their characteristics are approximately circularly symmetric
Keywords :
filtering and prediction theory; two-dimensional digital filters; 2D filters; coefficient conditions; digital filter; first-order allpass sections; recursive filters; two dimensional filters; variable magnitude characteristics; Delay; Filters; Polynomials; Stability; Transfer functions;
Conference_Titel :
Circuits and Systems, 1989., Proceedings of the 32nd Midwest Symposium on
Conference_Location :
Champaign, IL
DOI :
10.1109/MWSCAS.1989.102045
