A rate-distortion optimized rate shaping scheme for H.264 data partitioned video bitstream

被引：0
|
作者：
张锦锋 [1 ]
机构：
[1] School of Computer Science and Technology,Beijing University of Aeronautics and Astronautics
来源：
High Technology Letters | 2009年 / 15卷 / 01期
基金：
中国国家自然科学基金;
关键词：
rate shaping; frame dropping; rate-distortion optimization; data partition; H.264;
D O I：
暂无
中图分类号：
TN919.81 [图像编码];
学科分类号：
0810 ; 081001 ;
摘要：
To enable quality scalability and further improve the reconstructed video quality in rate shaping,arate-distortion optimized packet dropping scheme for H.264 data partitioned video bitstream is proposed inthis paper.Some side information is generated for each video bitstream in advance,while streaming suchside information is exploited by a greedy algorithm to optimally drop partitions in a rate-distortion opti-mized way.Quality scalability is supported by adopting data partition instead of whole frame as the drop-ping unit.Simulation results show that the proposed scheme achieves a great gain in the reconstructedvideo quality over two typical frame dropping schemes,with the help of the fine granularity in droppingunit as well as rate-distortion optimization.
引用
收藏
页码：65 / 69
页数：5
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