Real-time error concealment for MPEG2-compatible data-partitioning scalable video codecs

被引：0
|
作者：
Benelli, G [1 ]
Cingottini, M [1 ]
Garzelli, A [1 ]
Sennati, D [1 ]
机构：
[1] Univ Siena, Dept Informat Engn, I-53100 Siena, Italy
来源：
MATHEMATICS OF DATA/IMAGE CODING, COMPRESSION, AND ENCRYPTION | 1998年 / 3456卷
关键词：
video transmission; MPEG2; temporal error concealment;
D O I：
10.1117/12.330367
中图分类号：
TP31 [计算机软件];
学科分类号：
081202 ; 0835 ;
摘要：
A temporal error concealment (TEC) algorithm is proposed, which is specifically designed for the data partitioning profile of MPEG2 and for MPEG2-compatible scalable schemes. Among the four methods to produce a scalable video bitstream for MPEG-2, the data partitioning profile is chosen for its simple implementation and high overall video quality due to reduced overhead information. The proposed TEC algorithm, namely MCTEC-DISP, applies also on I-pictures since it operates on the motion vectors of the current reference P-frame. Subject to the hypothesis of motion continuity, MCTEC-DISP improves layered MPEG-2 video quality in the presence of packet losses. This is particularly important when layered video is transmitted over dual-priority networks. The algorithm presents a reduced computational complexity with respect to similar TEC schemes and it is not designed for post-processing implementation, but it operates during the decoding process for real-time decoding.
引用
收藏
页码：165 / 173
页数：9
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