DocumentCode :
3061589
Title :
Scalable video coding for failure-free video transmission
Author :
Tai, Pol Lin ; Liu, Chii Tung ; Wang, Jia Shung
Author_Institution :
Dept. of Comput. Sci., Nat. Tsing Hua Univ., Hsinchu, Taiwan
fYear :
2001
fDate :
36982
Firstpage :
40
Lastpage :
43
Abstract :
The authors propose a scalable video coding algorithm for low bit rate failure-free video transmission. In the failure-free video transmission, two channels are utilized to transmit the same video source. In the receiver, the video can be reconstructed by any single encoded bitstream. While receiving two encoded bitstreams, the image quality can be improved by combining two bitstreams. We develop a motion vector refinement technique to improve the image quality. In the encoder, the positions of the macroblocks for channel two are shifted by eight pixels from channel one. In the receiver, the motion vectors transmitted in each channel can be refined to more accurate motion vectors with smaller block size when two channels are received. The final decoded image is merged from the two reconstructed images by the two channels. Experimental results show our proposed method has high efficiency and high reliability
Keywords :
fault tolerance; image reconstruction; motion estimation; multimedia communication; quality of service; video coding; visual communication; block size; decoded image; failure-free video transmission; image quality; low bit rate failure-free video transmission; macroblocks; motion vector refinement technique; motion vectors; receiver; reconstructed images; scalable video coding; scalable video coding algorithm; single encoded bitstream; video source; Bit rate; Discrete cosine transforms; Image quality; Image reconstruction; Motion estimation; Quality of service; Redundancy; Resilience; Video coding; Video compression;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information Technology: Coding and Computing, 2001. Proceedings. International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
0-7695-1062-0
Type :
conf
DOI :
10.1109/ITCC.2001.918762
Filename :
918762
Link To Document :
بازگشت