DocumentCode :
2957918
Title :
Constant Quality Aimed Bit Allocation for 3D Wavelet Based Video Coding
Author :
Ni, Zefeng ; Cai, Jianfei
Author_Institution :
Sch. of Comput. Eng., Nanyang Technol. Univ.
fYear :
2006
fDate :
9-12 July 2006
Firstpage :
1657
Lastpage :
1660
Abstract :
MCTF has been widely used in wavelet based video coding due to its attractive features. For MCTF based codecs, a fundamental question is how to allocate bits to each temporal band so that certain degree of constant quality can be achieved. In this paper, we propose a novel approach for constant quality aimed bit allocation among T-bands for the applications of adaptive stored video streaming. The basic idea of our proposed scheme is to adjust the energy gains based on an empirical model to compensate the different contributions from different types of T-bands, and more or less equally distribute the distortions among the T-bands at the same level. Experimental results show that our proposed bit allocation can greatly reduce the PSNR fluctuation with only slight degradation in average PSNR
Keywords :
adaptive codes; adaptive filters; motion estimation; video codecs; video coding; video streaming; wavelet transforms; 3D wavelet based video coding; MCTF based codec; T-band; adaptive stored video streaming; constant quality aimed bit allocation; motion compensated temporal filtering; Bit rate; Codecs; Degradation; Filtering; Fluctuations; Image reconstruction; Mathematical model; PSNR; Streaming media; Video coding;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Multimedia and Expo, 2006 IEEE International Conference on
Conference_Location :
Toronto, Ont.
Print_ISBN :
1-4244-0366-7
Electronic_ISBN :
1-4244-0367-7
Type :
conf
DOI :
10.1109/ICME.2006.262866
Filename :
4036935
Link To Document :
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