Title :
A simplified lattice structure of first-order linear-phase filter banks
Author :
Tanaka, Yuichi ; Ikehara, Masaaki ; Nguyen, Truong Q.
Author_Institution :
EEE Dept., Keio Univ., Yokohama, Japan
Abstract :
A simplified lattice structure for first-order linear-phase filter banks (FOLPFBs) is presented in this paper. A FOLPFB is a generalized version of biorthogonal linear-phase filter banks regarding their synthesis filter lengths. FOLPFBs´ structure is more complicated and has more parameters than that in other FBs. We propose a method to reduce their redundant parameters without losing their properties. Moreover, regularity can be imposed which reduces the design freedom as well as improves the perceptual quality in image coding.
Keywords :
image coding; image filtering; lattice filters; linear phase filters; FOLPFB structure; biorthogonal linear-phase filter bank; first-order linear-phase filter banks; image coding; simplified lattice structure; synthesis filter length; Encoding; Europe; Frequency synthesizers; Image coding; Image reconstruction; Lattices; Signal processing;
Conference_Titel :
Signal Processing Conference, 2007 15th European
Conference_Location :
Poznan
Print_ISBN :
978-839-2134-04-6
