The MPEG-2 compression algorithm is very sensitive to transmission errors due to the use of variable-length coding. Any errors can lead to noticeable degradation of image quality seriously, so that in part or entire slice information is lost until the next resynchronization point is reached. Error concealment (EC) methods offer one way of dealing with this problem. In this paper,two new algorithms, namely spatial EC based on edgematching and temporal EC based on block-matching, are presented to reconstruct the corrupted regions. According to the simulation results of experiments, the proposed methods can recover the high-quality MPEG-2 images.
展开▼
