A Comparison of Di erent Optimized Structures ofFilter Banks for Video
نویسندگان
چکیده
In this paper, optimized perfect reconstruction octave-band two-stage and three-stage tree-structured lter banks and optimized uniform four-channel and eight-channel lter banks are compared for hybrid video coding. The lter co-eecients are optimized at each stage for subband coding gain for nonuniform lter banks. Six types of frequency partitionings are presented to compare the eecient utilization of the spatial redundancies in the prediction error image. The performance of the proposed lter 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) lter bank is a good candidate for video coding purpose.
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