Error Concealment Enhancement by Using the Reliability Outputs of a SOVA in MPEG-2 Video Decoder

摘要

The MPEG-2 source coding algorithm is very sensitive to channel disturbances. A single bit error in the bitstream will cause a high degradation of picture quality due to the use of variable length coding. Therefore, for picture replenishment error concealment techniques (ECT's) may be applied at the receiver.rnThe aim of this article is to study the error concealment (EC) enhancements due to the use of the soft output values of the SOVA (Soft Output Viterbi Algorithm) as an error detection technique (EDT) for MPEG-2 inter coded pictures applied for terrestrial broadcasting.