Title :
A comparison of different optimized structures of filter banks for video coding
Author :
Balasingham, Ilangko ; Fuldseth, Arild ; Ramstad, Tor A.
Author_Institution :
Norwegian Univ. of Sci. & Technol., Trondheim, Norway
Abstract :
Optimized perfect reconstruction octave-band two-stage and three-stage tree-structured filter banks and optimized uniform four-channel and eight-channel filter banks are compared for hybrid video coding. The filter coefficients are optimized at each stage for subband coding gain for nonuniform filter banks. Six types of frequency partitionings are presented to compare the efficient utilization of the spatial redundancies in the prediction error image. The performance of the proposed filter banks are compared for PSNR and visual quality. The overall performance indicates that the optimized perfect reconstruction octave-band two-stage tree-structured (FB 22_22_8) filter bank is a good candidate for video coding
Keywords :
FIR filters; band-pass filters; circuit optimisation; filtering theory; image reconstruction; prediction theory; video coding; FIR analysis filters; FIR synthesis filters; PSNR; eight-channel filter banks; filter banks performance; filter coefficients; four-channel filter banks; frequency partitionings; hybrid video coding; nonuniform filter banks; octave band filter banks; optimized perfect reconstruction filter banks; optimized structures; prediction error image; spatial redundancies; subband coding gain; three-stage tree-structured filter banks; two-stage tree-structured filter banks; visual quality; Channel bank filters; Filter bank; Finite impulse response filter; Frequency; Image coding; Image reconstruction; PSNR; Redundancy; Signal synthesis; Video coding;
Conference_Titel :
Digital Signal Processing Workshop Proceedings, 1996., IEEE
Conference_Location :
Loen
Print_ISBN :
0-7803-3629-1
DOI :
10.1109/DSPWS.1996.555457
