Detection and Concealment of Transmission Errors in MPEG Images

Abstract

In this study, the detection and concealment approach to transmission errors in MPEG-2 images is proposed. For entropy-coded MPEG images, a transmission error in a codeword may cause the current codeword and its subsequent codewords within a slice to be misinterpreted, resulting in a great degradation of the received images. In the proposed approach, transmission errors within a slice of an MPEG image are detected by two successive procedures. When a block is determined to be a corrupted/lost one, the proposed GA approach to error concealment is employed to conceal the corrupted/lost block. Based on the simulation results obtained in this study, the proposed approach can recover high-quality MPEG images from the corresponding corrupted MPEG images. This shows the feasibility of the proposed approach.