A comparison of different optimized structures of filter banks for video coding
Ilangko Balasingham, Arild Fuldseth, T.A. Ramstad · 2002
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.