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一类MPEG-4 FGS流视频传输的质量定义及算法 被引量：2

The Quality Definition and an Optimal Algorithm for MPEG-4 FGS Video Streaming
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摘要 基于PSNR(MSE)指出了MPEG4FGS流视频客观质量和质量变化指标的相关定义,讨论了视频分段场景基础上的质量最优化问题,通过状态迁移图和动态规划给出FGS流视频的最优传输策略,并且用试验数据对FGS流视频的优化传输的控制粒度及实时传输算法进行了对比分析. Since MPEG-4 FGS（Fine Granularity Scalability） coding has been dedicated to IP vid- eo streaming, a strict definition of its obiective quality and quality variation is required, in order to provide efficient transmission of FGS-coded video and an attainable subjective quality percep- tion {or end users. Based on MSE（Mean Square Error） and PSNR（Peak Signal-to-Noise Ratio）, an obiective quality and quality variation definition for FGS-coded video is introduced in this paper, and a quality optimal problem of scene in video segments is formulated and solved using the state transfer graph and dynamic programming. The optimal transmission policy is also obtained and compared with a real-time transmission algorithm. Different aggregation levels（segmentation granularity）of video segments for optimal transmission are also examined by experimental data. Simulation results validate the proposition.
作者 黄天云
机构地区 西南民族大学计算机科学与技术学院
出处 《计算机学报》 EI CSCD 北大核心 2006年第5期751-759,共9页 Chinese Journal of Computers
基金 国家民委科研项目基金(05XN09) 西南民族大学博士创新基金(234138)资助.
关键词 MPEG-4 FGS 质量定义 传输策略 视频分段 场景 状态迁移 MPEG-4 FGS quality definition transmission policy video segment scene statetransfer graph
分类号 TP391 [自动化与计算机技术—计算机应用技术]
  • 相关文献

参考文献20

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共引文献5

同被引文献52

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引证文献2

二级引证文献7

计算机学报
2006年 第5期

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