Weighted Motion Vectors of double Candidate Blocks Based Temporal Error Concealment Method for Video Transmission over Wireless Network
The error concealment(EC) method for video transmission over wireless network recommended by H.264 cannot reconstruct the corrupted image effectively, which was caused partly by the inaccurate predicted motion vector(MV).Thus a temporal error concealment(TEC) method based on weighted motion vectors of double candidate blocks in the previous frame is proposed in this paper. The proposed method conceals a corrupted block by the MV given by weighting motion vectors of double candidate blocks according to their different accuracy. Moreover, to improve the accuracy of a candidate block and its MV when searching a matched block in the reference frame, the reliability of the neighboring blocks of the current corrupted block was assigned by different reliability coefficients in terms of their different contribution to recover the corrupted block. The performances, on several standard video sequences, of the proposed TEC method have been compared with those obtained by the EC method in H.264. Experimental results show that the proposed method outperforms the method in H.264 both on PSNR and visual quality obviously.
H.264 video transmission error concealment double candidate blocks
Mingjing Ai Qixing Jiang
State Key Laboratory of Virtual Reality Technology and Systems Beihang University Beijing, China
国际会议
2010 International Conference on Educational and Network Technology(2010教育与网络技术国际会议 ICENT 2010)
秦皇岛
英文
478-481
2010-06-25（万方平台首次上网日期，不代表论文的发表时间）