Slice error detection and correction decoder for H.264/AVC video sequences

In this paper, we propose a slice error detection and correction decoder (SEDCD) for the H.264/AVC encoded video sequence. Error detection is accomplished by making use of the CRC checksum as well as syntax analysis. Once errors are detected in the slice, a tree-search - based algorithm is invoked in order to identify and correct the errors. A unique feature of our proposed SEDCD is that it exploits the knowledge about the syntax failure to aid in its search for the errors. Through simulations, we show that the SEDCD can improve the PSNR by a maximum of 3.5 dB as compared to one without any error correction.