Experimental results on error concealment techniques to hide the video quality degradation due to bit errors and cell losses from the viewer's perception are presented in this paper.First the impact of bit error and cell loss in a hybrid DPCM/DCT coding algorithm is described through three different video sequeuce simulations,Them two effective schemes that conceal the intormation loss cansed by bit errors and cell losses based on the information in the previous frame are presented.These error concealment techniques work very well in realtime playback as long as the location of bit error and cell loss is properly detected by the decoder.
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