Error concealment enhancement by using the reliability outputs of a SOVA in MPEG-2 video decoder

Author

Aign, Susanna

Author_Institution

Inst. for Commun. Technol., German Aerosp. Res. Establ., Oberpfaffenhofen, Germany

fYear

1995

Firstpage

59

Lastpage

62

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ISSSE.1995.497934

Filename

497934