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一种适合3G网络传输的H.264实时视频容错编码

DOI: 10.11834/jig.2005011244

Keywords: H.264,视频编码,容错,3G网络,多参考帧

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Abstract:

为了在3G网络上传输H.264实时视频流,提出了一种鲁棒性容错编码策略.该系统首先将视频序列分成两个子序列分别进行编码,并在不同路径中传输,以降低因信道突发错误而造成连续丢包的概率,对丢失的数据则采用高精度的双向加权运动补偿进行预测.为了使出错子流快速恢复正常解码状态,采用多参考帧策略,使用正确解码子流的参考帧作为出错子流的参考帧来进行预测编码,以消除误差扩散.实验结果表明,该方法在无线网络环境中不仅能有效地抵抗误码和丢包对传输图像质量的影响,而且能保证视频流的正常播放和改善图像质量.与相关方法比较,该方法提高重建图像质量超过0.6dB.

References

[1]  Wiegand T, Sullivan G J, Bjontegaard G, et al. Overview of the H. 264/AVC video coding standard [ J ]. IEEE Transactions on Circuits System Video Technology, 2003, 13 (7) :560 ~ 576.
[2]  3GPP. Packet Switched Conversational Multimedia Applications;Default Codecs V6. 3.0 [ S]. TS 26. 235,3rd Generation Partnership Project (3 GPP), 2005.
[3]  Apostolopoulos John G. Error-resilient video compression via multiple state streams [ A ]. In: Proceedings of the International Workshop on Very Low Bitrate Video Coding [ C], Kyoto, Japan, LNCS, 1999:168 ~ 171.
[4]  Roth G, Sjoberg R, Liebl G, et al. Common test conditions for RTP/IP over 3GPP/3GPP2 [ S]. ITU-T SG16 Doc. VCEG-M77,ITU-T Racommendation 2001.
[5]  Joint Video Team (JVT). Advanced video coding for generic audiovisual services [ S ], H. 264 ISO/IEC 14496-10, ITU-T Recommendation, 2005.
[6]  Stockhammer T, Hannuksela M M, Wiegand T. H. 264/AVC in wireless environments [ J]. IEEE Transactions on Circuits System Video Technology, 2003, 13(7) :657 ~673.
[7]  Wenger S, Knorr G, Ott J, et al. Error resilience support in H.263 + [J]. IEEE Transactions on Circuits System Video Technology, 1998, 8(7) :867 ~ 877.
[8]  FAN Chen, CUI Hui-juan, TANG Kun. Chessboard-interpolationbased multiple description video coding [ J ]. Science in China (E Series),2003,33(10):939~946.[范晨,崔慧娟,唐昆.基于棋盘分割插值的多描述视频编码[J].中国科学(E辑),2003,33(10):939~946]
[9]  Eric Setton, Yi Liang, Bernd Girod. Adaptive multiple description video streaming over multiple channels with active probing [ A ]. In:Proceedings of IEEE International Conference on Multimedia & Expo [ C ]. Baltimore, ML, USA, 2003:509 ~ 512

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