000125008 001__ 125008
000125008 005__ 20190316234306.0
000125008 0247_ $$2doi$$a10.1155/2009/683510
000125008 02470 $$2ISI$$a000285105700001
000125008 037__ $$aARTICLE
000125008 245__ $$aImproved Side Information Generation for Distributed Video Coding by Exploiting Spatial and Temporal Correlations
000125008 269__ $$a2009
000125008 260__ $$c2009
000125008 336__ $$aJournal Articles
000125008 500__ $$aSpecial Issue on Distributed Video Coding
000125008 520__ $$aDistributed Video Coding (DVC) is a new paradigm in video coding, which is receiving a lot of interests nowadays. Side Information (SI) generation is a key function in the DVC decoder, and plays a key-role in determining the performance of the codec. This paper proposes an improved motion compensated frame interpolation for SI generation in DVC, which exploits both spatial and temporal correlations in the sequences. Partially decoded Wyner-Ziv (WZ) frames, based on initial SI by motion compensated temporal interpolation, are exploited to improve the performance of the whole SI generation. More specifically, an enhanced temporal frame interpolation is proposed, including motion vector refinement and smoothing, optimal compensation mode selection, and a new matching criterion for motion estimation. The improved SI technique is also applied to a new hybrid spatial and temporal error concealment scheme to conceal errors in WZ frames, where the error-concealed results from spatial concealment are used to improve the performance of temporal concealment. Simulation results show that the proposed scheme can achieve up to 1.0 dB improvement in rate distortion performance in WZ frames for video with high motion, when compared to state-of-the-art DVC. In addition, both the objective and perceptual quality of the corrupted sequences are significantly improved by the proposed hybrid error concealment scheme, outperforming both spatial and temporal concealments alone.
000125008 6531_ $$aError-Concealment
000125008 6531_ $$aInterpolation
000125008 700__ $$aYe, Shuiming
000125008 700__ $$aOuaret, Mourad
000125008 700__ $$0241060$$g149769$$aDufaux, Frederic
000125008 700__ $$0240223$$g105043$$aEbrahimi, Touradj
000125008 773__ $$j2009$$tEURASIP Journal on Image and Video Processing (special issue on DVC)
000125008 8564_ $$zURL
000125008 8564_ $$uhttps://infoscience.epfl.ch/record/125008/files/2009_JIVP_ye_et_al.pdf$$zn/a$$s2982440
000125008 909C0 $$0252077$$pMMSPL
000125008 909CO $$particle$$ooai:infoscience.tind.io:125008$$qGLOBAL_SET$$pSTI
000125008 937__ $$aMMSPL-ARTICLE-2008-001
000125008 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000125008 980__ $$aARTICLE