计算机工程 ›› 2012, Vol. 38 ›› Issue (7): 19-21,24.doi: 10.3969/j.issn.1000-3428.2012.07.007

• 博士论文 • 上一篇    下一篇

基于反馈的可伸缩视频编码容错策略

刘云鹏1,2,张三元1,王仁芳2,张 引1   

  1. (1. 浙江大学计算机科学与技术学院,杭州 310027; 2. 浙江万里学院计算机与信息学院,浙江 宁波 315100)
  • 收稿日期:2011-07-07 出版日期:2012-04-05 发布日期:2012-04-05
  • 作者简介:刘云鹏(1976-),男,讲师、博士研究生,主研方向:视频编/解码,媒体信息处理;张三元,教授、博士生导师;王仁芳、张 引,副教授、博士
  • 基金项目:
    广东省教育部产学研结合基金资助项目(2010B090400193);宁波市自然科学基金资助项目(2011A610195)

Scalable Video Coding Fault Tolerant Strategies Based on Feedback

LIU Yun-peng    1,2, ZHANG San-yuan    1, WANG Ren-fang    2, ZHANG Yin    1   

  1. (1. College of Computer Science and Technology, Zhejiang University, Hangzhou 310027, China; 2. College of Computer Science and Information Technology, Zhejiang Wanli University, Ningbo 315100, China)
  • Received:2011-07-07 Online:2012-04-05 Published:2012-04-05

摘要: 为提高可伸缩视频编码(SVC)在易错传输环境下的解码质量,研究帧内宏块刷新和参考帧选择2种容错技术,根据视频空间分层下SVC的层间预测特性,提出2种改进策略并进行对比。测试结果表明,在码率控制的情况下,改进的参考帧选择策略传输后重建图像的平均亮度峰值信噪比较高,更适用于低码率的传输环境。

关键词: 可伸缩视频编码, 反馈, H.264标准, 容错, 帧内刷新, 参考帧选择

Abstract: Aiming at the problems of the falling decoded video quality of Scalable Video Coding(SVC) under the error prone transmission network, this paper proposes the real-time feedback-based fault tolerant strategies suitable for low bit rate transmission. The strategies make full use of the inter-layer prediction of spatial layers and enhance feedback-based conventional intra Macro Block(MB) update and Reference Picture Selection(RPS) fault tolerant techniques. The strategies are tested by using SVC common test conditions, and results show that the strategy average Y-PSNR of decoded pictures is higher in rate control, and it is suitable to low bit rate transmission enviroment.

Key words: Scalable Video Coding(SVC), feedback, H.264 strandard, fault tolerant, intra update, Reference Picture Selection(RPC)

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