Distributed Video Coding Using Wavelet

Xun Guo, Yan Lu, Feng Wu, Wen Gao
2006 IEEE International Symposium on Circuits and Systems  
This paper proposes a distributed video coding scheme based on the zerotree entropy (ZTE) coding. Wyner-Ziv theory on source coding with side information is taken as the basic coding principle, which makes independent encoding and joint decoding possible. In this scheme, wavelet transform is used to exploit the spatial correlation of a Wyner-Ziv frame. The quantized wavelet coefficients are reorganized in terms of the zero tree structure so as to identify the significant and insignificant
more » ... insignificant coefficients. The significance map is intra-codec and transmitted. In particular, the significant coefficients are independently encoded with turbo coder, and only the parity bits are transmitted. At the decoder, a predictive frame generated through motion-compensated prediction is used as the side information, with which the Wyner-Ziv frame can be conditionally decoded. Experimental results show that, compared to the traditional intra-frame coding and pixeldomain Wnyer-Ziv video coding, the proposed scheme can achieve a better coding performance, especially at low bit rates. I.
doi:10.1109/iscas.2006.1693861 dblp:conf/iscas/GuoLWG06 fatcat:t6sqa6x3ujdrzbs454anwvp5si