Burst-Packet-Loss Concealment for MPEG-2 Video

In this paper, we propose an object-based error-concealment technique for MPEG-2 video transmitted in a burst-packet-loss environment. A burst packet loss typically impairs consecutive slices for the reconstructed picture. The proposed object-based error concealment proceeds in two stages, by intra-picture and inter-picture estimation respectively. In the first stage, regions of the missing area are estimated by using the motion vectors adjacent to the missing area. In the second stage, the singular objects with respect to uniformly moving background within the missing area are identified and compensated from the prediction pictures. As compared with conventional concealment approaches, the proposed method achieves better PSNR performance and relieves the visual discontinuity over the compensated region.