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高分辨率视频会议中基于模板的自适应编码算法 被引量：1

Applying Template-based Adaptive Video Coding Algorithm on High Resolution Live Video System
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摘要 如今,对高分辨率的便携计算机视频会议系统的需求日益高涨。虽然便携计算机使用方便、局域网带宽充足,能够为工作学习带来许多益处,然而计算资源的紧张却直接影响了高分辨率视频会议的效果。针对这个问题提出了自适应模板编码算法(template-based coding algorithm,TBCA),不仅能比传统自适应算法提高10%的计算资源利用率,还减少了近一倍的参数调整频率。TBCA已被实现在校园网会议系统(campus video meeting system,CVMS)中,成功地提高了用户体验。 There is a great demand to support high resolution local video conference in today＇s PCs. However, although PC is convenient and local access network bandwidth is sufficient, the computational capacity is a big bottleneck in high resolution laptop video conference system. Here, Template-based Coding Algorithm （TBCA） is proposed for such a situation which can improve the utilization of computing resources by 10% and reduce the adjustment frequency to half of the initial situation. A high resolution laptop video conference system based on the TBCA is implemented with satisfactory user experiences.
作者 王莼栋 叶德建
机构地区 复旦大学软件学院网络多媒体实验室
出处 《中国图象图形学报》 CSCD 北大核心 2007年第10期1811-1814,共4页 Journal of Image and Graphics
关键词 自适应编码 实时视频系统 高分辨率 视频编码 adaptive coding, live video system, high resolution, video coding
分类号 TP301.6 [自动化与计算机技术—计算机系统结构]
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参考文献8

  • 1Wang Hui, Mao Zhi-gang. An adaptive motion estimation algorithm based on evolution strategies [A]. In: Proceedings of IEEE International Conference on Acoustics, Speech, and Signal Processing [ C ] , Montreal, Quebec, Canada, 2004 : 353 - 356.
  • 2Sorwar G, Murshed M, Dooley L. Fully Adaptive Performance Scalable Block-based Motion Estimation [ A ], In: Proceedings of IEEE International Conference on Information, Communications and Signal Processing[ C ] , Bangkok, Thailand, 2005 : 1145 - 1149.
  • 3Sun H, Vetro A. Adaptive Video Coding Method[P]. United States Patent 5,969,764, 1999-10-19.
  • 4Chen W H, Smith C H. Adaptive coding of monochrome and color images[J]. IEEE Transactions on Communications, 1977, COM-25 : 1285 - 1292.
  • 5Donald A, Lee M C. Scene-adaptive transform domain video partitioning[J]. IEEE Transactions on Multimedia, 2004, 6 : 58 - 69.
  • 6汤戈,朱立,徐正全,沈燕飞.一种减少块效应的自适应后处理算法[J].武汉大学学报（信息科学版）,2002,27(1):81-84. 被引量：3
  • 7Yin Hao Zhang Jiangshan Zhu Yaoting Zhu Guangxi (Dept. of Electronics & Info. Eng., Huazhong University of Sci. & Tech., Wuhan 430074).A ROBUST ADAPTIVE VIDEO ENCODER BASED ON HUMAN VISUAL MODEL[J].Journal of Electronics(China),2003,20(2):142-149. 被引量：2
  • 8Gupta S, Williamson C L. A performance study of adaptive video coding algorithms for high speed networks [ A ]. In: Proceedings of IEEE International Conference on Local Computer Networks [ C ], Minneapolis, Minnesota, USA, 1995 : 317 - 325.

二级参考文献15

  • 1[1]ISO/IEC 10918,Information Technology.Digital Compression and Coding of Continuous-tone Still Image.Part 1:Requirements and guide lines;Part 2:Extensions;Part 3:Compliance Testing,1996
  • 2[2]ITU-T Recommendation H.261.Video Codec for Audiovisual Services at p×64 kbit/s,1993
  • 3[3]ITU-T Recommendation H.263.Video Coding for Low Bit Rate Communication,1996
  • 4[4]ISO/IEC 11172,Information Technology.Coding of Moving Pictures and Associated Audio for Digital Storage Media at up to about 1.5Mbit/s.Part 1:Systems;Part 2:Video;Part 3:Audio;Part 4:Conformance Testing,1993
  • 5[5]ISO/IEC 13818.Generic Coding of Moving Pictures and Associated Audio.Part 2:Video,1994
  • 6[6]Paek H,Rin-Chul Kim,Sang-Uk Lee.A DCT-based Spatially Adaptive Post-Processing Technique to Reduce the Blocking Artifacts in Transform Coded Images.IEEE Trans.Circuits Syst, Video Technol,2000(10):36～41
  • 7[7]Ramamurthi B,Gersho A.Nonlinear Space-variant Postprocessing of Block Coded Images.IEEE Trans.Acoust,Speech,Signal Processing,1986(34):1 258～1 286
  • 8[8]ITU-T Draft Recommendation H.263.Video Coding for Low Bit Rate Communication,1998
  • 9[9]Video Codec Test Model.TMN8,1997
  • 10[10]Video Codec Test Model.TMN6,1996

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中国图象图形学报
2007年 第10期

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