Fuzzy edge-sensitive error concealment algorithm for video transmission

An edge-sensitive error concealment algorithm is proposed as a post-processing tool at the decoder side, to recover the losing motion vectors and image blocks during the video sequences transmission. In order to recovery more accurate motion vectors, we consider the influence of edge. For a lost block, we use a fuzzy edge detector to obtain the edge information on boundary pixels of its four neighboring blocks. With the edge information, we construct an energy function for boundary matching error. And the motion vector corresponding to the minimum of energy function is the estimation of the lost block's motion vector. Simulation results show that the proposed algorithm can recover the image with higher quality in different rates of lost block, comparing to the existing traditional algorithms.