Title :
Subband image coding using filter banks with non-uniform passband distribution
Author :
Lu, Xiqun ; Chen, Li ; Chan, Kwok-Ping
Author_Institution :
Dept. of Comput. Sci., Hong Kong Univ., Hong Kong
Abstract :
Subband filter banks with non-uniform passband distribution in frequency domain are studied. Several design examples are presented and compared with conventional uniform bandwidth filter banks. Image coding results show that filter banks with non-uniform bandwidth outperform filter banks with uniform bandwidth, especially in low bit rate coding
Keywords :
band-pass filters; data compression; filtering theory; frequency-domain analysis; image coding; frequency domain; linear phase paraunity filter banks; low bit rate coding; nonuniform bandwidth; nonuniform passband distribution; power spectral density; subband image coding; uniform bandwidth; uniform bandwidth filter banks; Bandwidth; Bit rate; Channel bank filters; Filter bank; Finite impulse response filter; Image analysis; Image coding; Image sequence analysis; Passband; Symmetric matrices;
Conference_Titel :
Information, Communications and Signal Processing, 1997. ICICS., Proceedings of 1997 International Conference on
Print_ISBN :
0-7803-3676-3
DOI :
10.1109/ICICS.1997.652213
