Title :
Error concealment enhancement by using the reliability outputs of a SOVA in MPEG-2 video decoder
Author_Institution :
Inst. for Commun. Technol., German Aerosp. Res. Establ., Oberpfaffenhofen, Germany
Abstract :
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 (ECTs) may be applied at the receiver. The 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 for terrestrial broadcasting
Keywords :
Viterbi decoding; code standards; error detection; image enhancement; source coding; telecommunication standards; television broadcasting; variable length codes; video coding; MPEG-2 intercoded pictures; MPEG-2 source coding algorithm; MPEG-2 video decoder; SOVA; bit error; bitstream; channel disturbances; error concealment enhancement; error concealment techniques; error detection technique; picture quality degradation; picture replenishment; receiver; reliability outputs; soft output Viterbi algorithm; soft output values; terrestrial broadcasting; variable length coding; Broadcasting; Communications technology; Concatenated codes; Decoding; Degradation; HDTV; OFDM; Source coding; TV; Viterbi algorithm;
Conference_Titel :
Signals, Systems, and Electronics, 1995. ISSSE '95, Proceedings., 1995 URSI International Symposium on
Conference_Location :
San Francisco
Print_ISBN :
0-7803-2516-8
DOI :
10.1109/ISSSE.1995.497934
