Spatial and Temporal Error Concealment for H.264

摘要

In this paper, we propose a set of error concealment techniques to improve error resilience for H.264/AVC. A subblock-based refined temporal concealment using partial boundary match criteria is proposed, which improves the ability to deal with high motion activity areas. The spatial concealment adopts content adaptive scheme, which involves a bilinear spatial interpolation for uniform blocks, a directional spatial interpolation for edge blocks and a refined spatial block substitution for blocks with high details. Experimental results demonstrate that the proposed concealment techniques provide more error robustness for compressed stream over different packet loss rate than the original schemes suggested in H.264 without any encoder-side modifications.