Error concealment of intra coded video frames

In this paper, we propose a procedure to recover lost slices in intra-coded H.264/AVC video frames. The procedure recovers missing pixels by exploiting only the video frame spatial redundancy, with no reference to past frames. This situation is interesting in correspondence to scene changes. The proposed scheme determines the presence of a dominant edge by analyzing the pixels in a neighbor of the lost slice. Missing pixels are reconstructed by interpolating in the direction of the dominant edge, if it is present, or by smooth interpolation. Experimental results show that the proposed scheme compares favorably with existing state-of-the-art methods, both objectively and subjectively.