Title :
Two dimensional IIR and FIR digital notch filter design
Author :
Pei, Soo-Chang ; Tseng, Chien-Cheng
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
The two-dimensional 2-D digital notch filter design problem is investigated. A simple algebraic method for 2-D infinite impulse response (IIR) notch filter design is developed. This approach not only has closed-form transfer function, but also satisfies the bounded input bounded output (BIBO) stability condition. The Lagrange multiplier method is used to design 2-D finite impulse response (FIR) notch filters. This design is optimal in least square sense. The 2-D notch filter is applied to eliminate sinusoidal or narrowband interferences superimposed on an image. Simulation results are presented to demonstrate the effectiveness of these approaches
Keywords :
FIR filters; IIR filters; filtering theory; image processing; interference suppression; notch filters; stability; transfer functions; two-dimensional digital filters; 2D FIR filters; 2D IIR filters; BIBO stability; Lagrange multiplier method; algebraic method; bounded input bounded output; closed-form transfer function; digital notch filter design; finite impulse response; image interference; infinite impulse response; narrowband interferences; sinusoidal interference; Digital filters; Finite impulse response filter; IIR filters; Interference elimination; Lagrangian functions; Least squares methods; Narrowband; Stability; Transfer functions; Two dimensional displays;
Conference_Titel :
Circuits and Systems, 1993., ISCAS '93, 1993 IEEE International Symposium on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-1281-3
DOI :
10.1109/ISCAS.1993.393867
