Progressive Side Information Refinement Algorithm for Wyner-Ziv Codec
نویسندگان
چکیده
منابع مشابه
EXIT-Based Side Information Refinement in Wyner-Ziv Video Coding
The accuracy of the side information (SI) is critical in the performance of distributed video coding algorithms. The side information is typically built at decoder based on the reconstructed data and on channel coding parity bits transmitted by the encoder. The optimal encoding rate is generally difficult to compute precisely due to the dynamics of video content with varying correlation. Effect...
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In current interframe video compression systems, the encoder performs predictive coding to exploit the similarities of successive frames. The Wyner-Ziv Theorem on source coding with side information available only at the decoder suggests that an asymmetric video codec, where individual frames are encoded separately, but decoded conditionally (given temporally adjacent frames) could achieve simi...
متن کاملSide information generation in Wyner-Ziv decoder
Wyner-Ziv (WZ) encoder is a low -complexity encoder and can be made to achieve compression comparable to traditional high complexity encoders but at the expense of a high-complexity decoder. The high complexity of the decoder is mainly attributed to the generation of side information which involves motion estimation. In this paper sub-pixel motion estimation and intra-prediction based on H.264 ...
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The accuracy of motion estimation (ME) plays an important role in improving the coding efficiency of Wyner-Ziv video coding (WZVC). Most existing WZVC schemes perform ME at the decoder side. The unavailability of the current frame at the decoder side usually limits the accuracy of ME, which results in the degradation of the side information (SI) quality, as well as the coding efficiency of WZVC...
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Distributed Video Coding (DVC) is a video coding paradigm which mainly exploits the source statistics at the decoder based on the availability of side information at the decoder. This paper considers feedback channel based Transform Domain Wyner-Ziv (TDWZ) DVC. The coding efficiency of TDWZ video coding does not match that of conventional video coding yet, mainly due to the quality of side info...
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ژورنال
عنوان ژورنال: IEICE Transactions on Information and Systems
سال: 2011
ISSN: 0916-8532,1745-1361
DOI: 10.1587/transinf.e94.d.1641