Robust motion vector coding and error concealment in MCTF-based video coding
Error resilience is of paramount importance in video transmission over variable-bandwidth error-prone channels, such as wireless channels. In this paper, we investigate the influence of corrupted motion vectors in video coding based on motion compensated temporal filtering, and develop various error resilience and concealment mechanisms for this class of codecs. The experimental results show that our proposed motion vector coding technique significantly increases the robustness against transmission errors at the cost of less than 3% in terms of rate. It is also shown that our proposed spatial error-concealment mechanism leads to performance gains of up to 6 dB in comparison to a classical slicing-based approach employing no error concealment.