Wavelet based distributed video coding with spatial scalability

In this paper, an improved spatial scalable wavelet domain distributed video coding (DVC) scheme is proposed. In this scheme, we adaptively apply differential pulse code modulation (DPCM) Wyner-Ziv (WZ) coding and discrete cosine transform (DCT) based intra block coding to reduced-resolution layer....

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Vydané v:2008 IEEE International Symposium on Circuits and Systems s. 3458 - 3461
Hlavní autori: Bo Wu, Xiangyang Ji, Debin Zhao, Gao, Wen
Médium: Konferenčný príspevok.. Journal Article
Jazyk:English
Vydavateľské údaje: IEEE 01.01.2008
Predmet:
Block codes
Decoding
Discrete cosine transforms
Interpolation
Modulation coding
Pulse modulation
Scalability
Signal generators
Video coding
Wavelet domain
ISBN:9781424416837, 1424416833
ISSN:0271-4302
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Popis
Shrnutí:In this paper, an improved spatial scalable wavelet domain distributed video coding (DVC) scheme is proposed. In this scheme, we adaptively apply differential pulse code modulation (DPCM) Wyner-Ziv (WZ) coding and discrete cosine transform (DCT) based intra block coding to reduced-resolution layer. Due to the low energy nature of high-pass subbands, WZ coding can be directly used. At decoder, in full-resolution layer WZ frame decoding, an efficient side information (SI) generation technique for low-pass subband is proposed, in which motion compensated interpolation (MCI) is performed on full-resolution signal. On the other hand, a refined technique is also employed to generate the SI for high-pass subbands by taking advantage of inter-band correlation. Experimental results show that the proposed scheme provides an efficient wavelet domain DVC coding paradigm.
Bibliografia:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISBN:9781424416837
1424416833
ISSN:0271-4302
DOI:10.1109/ISCAS.2008.4542203