Title :
3-D wavelet coding of video with arbitrary regions of support
Author :
Minami, Gavin ; Xiong, Zixiang ; Wang, Albert ; Mehrotra, Sanjeev
Author_Institution :
Dept. of Electr. Eng., Hawaii Univ., Honolulu, HI, USA
fDate :
9/1/2001 12:00:00 AM
Abstract :
We examine 3-D wavelet coding of video with arbitrary regions of support (AROS). A critically sampled wavelet transform is applied to the AROS and a modified 3-D set partitioning in hierarchical trees (SPIHT) algorithm is used to quantize and code the wavelet coefficients in the AROS only. Experiments show that, for typical MPEG-4 pre-segmented sequences, our proposed method can achieve a gain of up to 5.6 dB in average PSNR at the same rate over 3-D SPIHT coding of regular volumes that embed the AROS of the given video sequences
Keywords :
image sequences; transform coding; video coding; wavelet transforms; 3-D wavelet coding; AROS; MPEG-4 pre-segmented sequences; SPIHT algorithm; critically sampled wavelet transform; gain; modified 3-D set partitioning in hierarchical trees; regions of support; video sequences; wavelet coefficients; Bit rate; Discrete wavelet transforms; Filters; Image coding; MPEG 4 Standard; PSNR; Video coding; Video sequences; Wavelet coefficients; Wavelet transforms;
Journal_Title :
Circuits and Systems for Video Technology, IEEE Transactions on
