Title :
Joint Source-Channel Decoding forH.264 Coded Video Stream
Author :
Wang, Yue ; Yu, Songyu ; Yang, Jing
Author_Institution :
Inst. of Image Commun. & Inf. Process., Shanghai Jiao Tong Univ.
fDate :
Oct. 30 2005-Nov. 2 2005
Abstract :
H.264 is the newest video coding standard and has achieved a significant improvement in coding efficiency. The entropy coding methods used in H.264 are CAVLC and CABAC. Although these two variable length code methods can achieve high compression, they are very sensitive to channel errors. This paper presents a joint source-channel MAP (maximum a posteriori probability) decoding method to dealing with this sensitivity to channel errors and applied it to the decoding of the motion vector in H.264 coded video stream. Although H.264 codec has proposed several error resilience methods, we believe this method could provide additional error resilience to H.264 stream. Experiment indicates that our JSCD achieves significant improvement than a separate scheme
Keywords :
code standards; combined source-channel coding; entropy codes; maximum likelihood decoding; variable length codes; video codecs; video coding; video streaming; CABAC; CAVLC; H.264 codec; JSCD; MAP decoding; coded video stream; entropy coding method; error resilience method; joint source-channel decoding; maximum aposteriori probability; motion vector; variable length code method; video coding standard; Channel coding; Code standards; Error correction; Image coding; Iterative decoding; Resilience; Source coding; Streaming media; Video coding; Video compression; H.264; JSCD; MAP; entropy coding; error resilience; noisy channel;
Conference_Titel :
Multimedia Signal Processing, 2005 IEEE 7th Workshop on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-9288-4
Electronic_ISBN :
0-7803-9289-2
DOI :
10.1109/MMSP.2005.248680
