Title :
Analytical expressions of 2-D complex cepstrum
Author :
Prasad, K.P. ; Unbehauen, R.
Author_Institution :
Universitÿt Erlangen-Nÿrnberg, Lehrstuhl fÿr Allgemeine und Theoretische Elektrotechnik, Erlangen, West Germany
Abstract :
An analytical expression for complex cepstrum of a 2-dimensional second-order (finite) real discrete signal is derived for minimum phase condition in terms of multinomial coefficients and signal values. The theoretical cepstral expression obtained agrees favourably with the actually computed cepsta using a reasonably large size DFT to minimise any effects of aliasing. A few important properties of 2-D cepstrum as an extension of the 1-D case are stated.
Keywords :
filtering and prediction theory; two-dimensional digital filters; complex cepstrum; minimum phase condition; multinomial coefficients; second-order real discrete signal; two-dimensional digital filters;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830566
