Title :
An analysis of coefficient inaccuracy for 2-D FIR direct form digital filters
Author_Institution :
Centre Commun. d´´Etudes de Telediffusion et de Telecommun., Cesson-Sevigne, France
Abstract :
An analysis is presented of filter frequency errors due to coefficient quantization in direct-form realizations of zero-phase two-dimensional finite-impulse response (2-D FIR) digital filters. Applying a method already used for 1-D FIR digital filters, the case of 2-D FIR filters with octagonal or quadrantal symmetry is considered. Based on the analysis, statistical bounds on the frequency-response errors and on the word length of the filter coefficients are developed and verified by experimental data
Keywords :
roundoff errors; two-dimensional digital filters; 2-D FIR direct form digital filters; analysis; coefficient inaccuracy; coefficient quantization; direct-form realizations; experimental data; filter coefficients; filter frequency errors; finite-impulse response; frequency-response errors; octagonal symmetry; quadrantal symmetry; statistical bounds; two-dimensional; word length; zero-phase 2D FIR filters; Chebyshev approximation; Degradation; Digital filters; Finite impulse response filter; Frequency domain analysis; Frequency response; Guidelines; Quantization; Statistical analysis; Two dimensional displays;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.112512
