Academic
Publications
Advanced side information creation techniques and framework for Wyner-Ziv video coding

Advanced side information creation techniques and framework for Wyner-Ziv video coding,10.1016/j.jvcir.2008.06.001,Journal of Visual Communication and

Advanced side information creation techniques and framework for Wyner-Ziv video coding   (Citations: 4)
BibTex | RIS | RefWorks Download
Recently, several distributed video coding (DVC) solutions based on the distributed source coding (DSC) paradigm have appeared in the literature. Wyner–Ziv (WZ) video coding, a particular case of DVC where side information is made available at the decoder, enable to achieve a flexible distribution of the computational complexity between the encoder and decoder, promising to fulfill novel requirements from applications such as video surveillance, sensor networks and mobile camera phones. The quality of the side information at the decoder has a critical role in determining the WZ video coding rate-distortion (RD) performance, notably to raise it to a level as close as possible to the RD performance of standard predictive video coding schemes. Towards this target, efficient motion search algorithms for powerful frame interpolation are much needed at the decoder. In this paper, the RD performance of a Wyner–Ziv video codec is improved by using novel, advanced motion compensated frame interpolation techniques to generate the side information. The development of these type of side information estimators is a difficult problem in WZ video coding, especially because the decoder only has available some reference, decoded frames. Based on the regularization of the motion field, novel side information creation techniques are proposed in this paper along with a new frame interpolation framework able to generate higher quality side information at the decoder. To illustrate the RD performance improvements, this novel side information creation framework has been integrated in a transform domain turbo coding based Wyner–Ziv video codec. Experimental results show that the novel side information creation solution leads to better RD performance than available state-of-the-art side information estimators, with improvements up to 2dB; moreover, it allows outperforming H.264/AVC Intra by up to 3dB with a lower encoding complexity.
Journal: Journal of Visual Communication and Image Representation - JVCIR , vol. 19, no. 8, pp. 600-613, 2008
Cumulative Annual
View Publication
The following links allow you to view full publications. These links are maintained by other sources not affiliated with Microsoft Academic Search.
    • ...The work in [2] improves the functionality by introducing a new hierarchical motion estimation technique using local affine motion models and a new motion estimation technique where the smoothness of the motion field is explicitly modeled...
    • ...Side information for Distributed Video Coding can be created by several methods, such as: frame extrapolation where a forthcoming frame is estimated based on past reference frame(s) [6], or frame interpolation where a frame is estimated based on neighboring frames using both past and future reference (decoded) frames [2]...
    • ...To overcome these problems, we propose a new scheme having two differences compared to those existing side information generation schemes (see Figure 3). First, an adaptive search range (ASR) is exploited to control the search range in the forward ME; and second, instead of using non-overlapped block motion compensation as [2][7], we apply the overlapped block motion compensation into this scheme that makes the scheme more effective in ...

    Xiem HoangVanet al. A flexible side information generation scheme using adaptive search ra...

    • ...This MCI solution is very efficient when compared to other SI creation solutions available in the literature [4], and contributes significantly for the good performance for the DVC codec; therefore, it is difficult to improve, especially for small GOP sizes and low/medium motion content...
    • ...Consider that a pair of symmetric motion vectors {(vx, vy), (−vx, −vy)} is estimated for a given block Ii with a BiME algorithm [4]...

    João Ascensoet al. A flexible side information generation framework for distributed video...

    • ...In [4] many advanced SI creating techniques are integrated into one framework and in [5] different SI estimators are analyzed by RD function, however VBMCI are not included in both works...
    • ...However it is argued that using the distortion as the search metric in WZVC is unreliable [3][4], so how to control the block splitting becomes a question for WZVC...
    • ...In [4][5] their MCI with 8x8 block has similar performance with our methods, the superiority of the proposed algorithm is confirmed...

    Sheng Fanget al. Variable Block Size Prediction For Wyner-Ziv Video Coding Using Struct...

Sort by: