Improved Side-Information in Distributed Video Coding
ICICIC '06 Proceedings of the First International Conference on Innovative Computing, Information and Control - Volume 2
Hybrid error concealment method for H.264 video transmission over wireless networks
IWCMC '07 Proceedings of the 2007 international conference on Wireless communications and mobile computing
New hybrid error concealment for digital compressed video
EURASIP Journal on Applied Signal Processing
Classification-based spatial error concealment for visual communications
EURASIP Journal on Applied Signal Processing
Second-order derivative-based smoothness measure for error concealment in DCT-based codecs
IEEE Transactions on Circuits and Systems for Video Technology
IEEE Transactions on Circuits and Systems for Video Technology
Novel sequential error-concealment techniques using orientation adaptive interpolation
IEEE Transactions on Circuits and Systems for Video Technology
Overview of the H.264/AVC video coding standard
IEEE Transactions on Circuits and Systems for Video Technology
IEEE Transactions on Circuits and Systems for Video Technology
Distributed video coding: trends and perspectives
Journal on Image and Video Processing - Special issue on distributed video coding
Compensating for motion estimation inaccuracies in DVC
ICISP'10 Proceedings of the 4th international conference on Image and signal processing
Progressively refined wyner-ziv video coding for visual sensors
ACM Transactions on Sensor Networks (TOSN)
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Distributed video coding (DVC) is a video coding paradigm allowing low complexity encoding for emerging applications such as wireless video surveillance. 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 SI generation for DVC, which exploits both spatial and temporal correlations in the sequences. Partially decoded Wyner-Ziv (WZ) frames, based on initial SI bymotion 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. 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 qualities of the corrupted sequences are significantly improved by the proposed hybrid error concealment scheme, outperforming both spatial and temporal concealments alone.