Source-channel prediction in error resilient video coding
ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 1
Optimizing motion compensated prediction for error resilient video coding
IEEE Transactions on Image Processing
A robust fine granularity scalability using trellis-based predictive leak
IEEE Transactions on Circuits and Systems for Video Technology
An enhancement of leaky prediction layered video coding
IEEE Transactions on Circuits and Systems for Video Technology
Reference frame modification techniques for temporal and spatial scalability
Image Communication
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A conventional video codec uses encoder reconstruction of previous frames for motion compensated prediction. This is designed to minimize the encoder prediction error and assumes error free transmission. In this paper we use a modified prediction mechanism both at the encoder and decoder and propose techniques to improve the error resilience of H.264/AVC when transmitted over error prone networks. In our schemes we provide greater emphasis on Intra pixels during the formation of the reference frame used for prediction, thereby achieving better resilience. We also incorporate leaky prediction to further improve the robustness. We apply leaky prediction selectively at a macroblock level based on a simple mean square error metric in order to reduce the bit-rate penalty. Substantial performance gains have been observed in simulations. The effectiveness of using leaky prediction can be observed in medium and fast moving video sequences.