A novel frame recovery algorithm based on spatial and temporal correlation

In video transmission over unreliable channels such as wireless channels or the Internet, transmission errors by for example packet loss are inevitable. For low bit-rate video applications, the loss of a packet may result in the loss of a whole video frame. In this paper, we propose a new algorithm to recover the lost frame. The proposed algorithm explores the spatial and temporal correlation among motion vectors integrative, and then estimates the motion vector field of the lost frame. Finally, adaptive overlapped block motion compensation is used to reconstruct the concealed picture. Results show that the proposed algorithm outperforms other techniques in both PSNR and subjective visual quality.