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We propose a novel error concealment algorithm to be used at the receiverside of a lossy image transmission system. Our algorithm involves hiding theedge map of the original image at the transmitter within itself using a robustwatermarking scheme. At the receiver, wherever a lost block is detected, theextracted edge information is used as border constraint for the spatialsmoothing employing the intact neighboring blocks in order to conceal errors.Simulation results show the superiority of our technique over existing methodseven in case of high packet loss ratios in the communication network.

Error Concealment in Image Communication Using Edge Map Watermarking and Spatial Smoothing