Title :
Two-dimensional linear phase cosine modulated filter banks
Author :
Lin, Yuan-Pei ; Vaidyanathan, P.P.
Author_Institution :
Dept. of Electr. Eng., California Inst. of Technol., Pasadena, CA, USA
Abstract :
A filter bank is referred to as cosine modulated when all the analysis and synthesis filters are cosine modulated versions of one or two prototypes. The one-dimensional (1D) cosine modulated filter bank (CMFB) is well-known for low design cost and low complexity. In the application of subband coding, it is sometimes desirable that the individual filters have linear phase. In this paper, we consider the class of 2D paraunitary CMFB with FIR linear phase filters. Necessary and sufficient conditions for perfect reconstruction of the 2D linear phase CMFB are presented
Keywords :
FIR filters; delay circuits; filtering theory; two-dimensional digital filters; 2D cosine modulated filter banks; FIR linear phase filters; perfect reconstruction; subband coding; two-dimensional filter banks; Channel bank filters; Costs; Filter bank; Finite impulse response filter; Image analysis; Image reconstruction; Nonlinear filters; Phase modulation; Prototypes; Sufficient conditions;
Conference_Titel :
Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3073-0
DOI :
10.1109/ISCAS.1996.540355
