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http://dx.doi.org/10.5909/JEB.2012.17.1.140

Transform-domain Wyner-Ziv Residual Coding using Temporal Correlation  

Cho, Hyon-Myong (School of Information and Communication Engineering. Sungkyunkwan University)
Eun, Hyun (School of Information and Communication Engineering. Sungkyunkwan University)
Shim, Hiuk-Jae (School of Information and Communication Engineering. Sungkyunkwan University)
Jeon, Byeung-Woo (School of Information and Communication Engineering. Sungkyunkwan University)
Publication Information
Journal of Broadcast Engineering / v.17, no.1, 2012 , pp. 140-151 More about this Journal
Abstract
In Wyner-Ziv coding, key picture is encoded by conventional H.264/AVC intra coding which has low complexity. Although inter coding is more efficient than intra coding, its complexity is much higher than intra coding due to its motion estimation. Since the main feature of Wyner-Ziv coding is low complexity of encoder, inter coding is not suitable to encode key picture in Wyner-Ziv coding. However, inter picture coding with zero motion vector can be usable for Wyner-Ziv key picture coding instead of intra coding. Moreover, while current transform-domain Wyner-Ziv residual coding only utilizes temporal correlation of WZ picture, if zero motion coding is jointly used to encode key picture in transform-domain Wyner-Ziv residual coding, there will be a significant improvement in R-D performance. Experimental results show that the complexity of Wyner-Ziv coding with the proposed zero motion key picture coding is higher than conventional Wyner-Ziv coding with intra key picture coding by about 9%, however, there are BDBR gains up to 54%. Additionally, if the proposed zero motion key coding is implemented on top of the transform-domain Wyner-Ziv residual coding, the result shows rate gains up to 70% in BDBR compared to conventional Wyner-Ziv coding with intra key picture coding.
Keywords
DVC; Wyner-Ziv coding; Zero motion; Wyner-Ziv residual coding;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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