Applying multipath routing to a video surveillance system deployed over a wireless mesh network
Proceedings of the 2nd ACM international workshop on Wireless multimedia networking and performance modeling
EURASIP Journal on Wireless Communications and Networking
Video Error Concealment Using Fidelity Tracking
IEICE - Transactions on Information and Systems
VLC/FLC data partitioning with intra AC prediction disabled
Journal of Visual Communication and Image Representation
Journal of Visual Communication and Image Representation
Adaptive interpolation for error concealment in H.264 using directional histograms
MCAM'07 Proceedings of the 2007 international conference on Multimedia content analysis and mining
Temporal error concealment for H.264 using optimum regression plane
MMM'08 Proceedings of the 14th international conference on Advances in multimedia modeling
A hybrid frame concealment algorithm for H.264/AVC
IEEE Transactions on Image Processing
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Compressed video sequences are very vulnerable to channel disturbances when they are transmitted through an unreliable medium such as a wireless channel. Transmission errors not only corrupt the current decoded frame, but they may also propagate to succeeding frames. A number of post-processing error concealment (ECN) methods that exploit the spatial and/or temporal redundancy in the video signal have been proposed to combat channel disturbances. Although these approaches can effectively conceal lost or erroneous macroblocks (MBs), all of them only consider spatial and/or temporal correlation in a single frame (the corrupted one), which limits their ability to obtain an optimal recovery. Since the error propagates to the next few motion-compensated frames in the presence of lost MBs in an I or P frame, error concealment should simultaneously minimize the errors not only in the current decoded frame but also in the succeeding B and P frames that depend on the corrupted frame. We propose a novel multiframe recovery principle which analyzes the propagation of a lost MB into succeeding frames. Then, MPEG-compatible spatial and temporal error concealment approaches using this multiframe recovery principle are proposed, where the lost MBs are recovered in such a way that the error propagation is minimized.