Title :
Image coding based on regular cosine-modulated filter banks
Author :
Uto, Toshiyuki ; Ichiwara, Katsuhiro ; Ikehara, Masaaki ; Ohue, Kenji
Author_Institution :
Ehime Univ., Matsuyama
Abstract :
In this paper, a novel design method of regular cosine-modulated filter banks (CMFB´s) have been presented for image coding. After introducing a regularity constraint on lattice parameters of a prototype filter in paraunitary (PU) CMFB´s, we derive a regularity condition for perfect reconstruction (PR) CMFB´s. Finally, we design regular 8-channel 32-length PUCMFB and PRCMFB by a unconstrained optimization of residual lattice parameters, and several simulation results for test images are shown for evaluating the proposed image coder based on the CMFB´s with one degree of regularity.
Keywords :
channel bank filters; digital filters; image coding; image reconstruction; lattice filters; image coder; image coding; perfect reconstruction; prototype filter; regular cosine-modulated filter banks; residual lattice parameters; unconstrained optimization; Computer science; Design methodology; Design optimization; Filter bank; Image coding; Image reconstruction; Lattices; Nonlinear filters; Prototypes; Testing;
Conference_Titel :
Circuits and Systems, 2007. MWSCAS 2007. 50th Midwest Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
978-1-4244-1175-7
Electronic_ISBN :
1548-3746
DOI :
10.1109/MWSCAS.2007.4488618
