Fuzzy Logic Based Error Concealment Algorithm for H.264 Video Transmission

In this paper, a new error concealment algorithm is proposed for the coding standard H.264. The algorithm consists of a block size determination step to determine the size type of the lost block and a motion vector recovery step to find the lost motion vector. The former step uses fuzzy logic method to select the size type of the lost block from the current frame. In the latter step, the optimal motion vector for the lost block is chosen from multiple previous reference frames with the minimum value of the side match distortion. The proposed algorithm determines the most correct mode for the lost block, and save much more computation time for motion vector recovery. Experimental results show that the proposed algorithm achieves 0.5-3 dB improvement than conventional VM method.