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一种抗包丢失的自适应刷新视频编码

DOI: 10.11834/jig.2003011484

Keywords: 图象处理(510?4050),包丢失,自适应刷新,视频通信

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Abstract:

包丢失是影响Internet视频通信质量的一个重要问题,为此提出了一种新颖的抗包丢失的自适应刷新方法.该方法是通过估计接收端重建图象的失真,在发送端自适应地确定需要刷新的宏块的位置.模拟实验表明,该方法与已有的顺序刷新和随机刷新等方法相比,不仅峰值信噪比(PSNR)有明显提高(0.3~2.5dB),而且计算复杂度较低,有利于实时实现.

References

[1]  [1]Zhu Q F, Kerofsky L. Joint source coding, transport processing and error concealment for H. 232-based packet video [A]. In:Proceedings of SPIE Symposium on Visual Communications and Image Processing[C], San Jose, CA, USA, 1999, 3653:52~62.
[2]  [5]Liao J Y, Villasenor J. Adaptive Intra Block Update for Robust Transmission of H. 263 [J]. IEEE Transaction of Circuits and Systems on Video Technology, 2000, 10(2):30~35.
[3]  [6]Ortega A, Ramchandran K. Rate-distortion methods for image and video compression[J]. IEEE Signal Processing Magazine,1998,15(11) :23~50.
[4]  [8]Wu D P, Hou Y T, Li B et al. An end to-end approach for optimal mode selection in internet video communication: theory and application [J]. IEEE Journal on Selected Area of Communications, 2000,18 (6): 977~995.
[5]  [10]Schulzrinne H, Casner S, Frederick R et al. RTP: A Transport Protocol for Real-Time Applications [ EB/OL ]. Internet Engineering Task Force http:∥www. ietf. org/rfc/rfc1889. txt,1996-01.
[6]  [2]Wang Y, Zhu Q F. Error control and concealment for video communication: A review [J]. Proceedings of IEEE, 1998,86(5) :974~997.
[7]  [3]Wenger S, Knorr G, Ott J et al. Error resilience support in H.263 +[J]. IEEE Transactions of Circuits and Systems on Video Technology, 1998,8(11) :867~877.
[8]  [4]Cote G, Kossentini F. Optimal intra coding of blocks for robust video communication over the internet [J ]. The European Association for Signal Speech and Image Processing(EURASIP)Image Communications, Special issue on Real-Time Video over the Internet, 1999,9(15):25~34.
[9]  [7]Zhang R, Regunathan S L, Rose K. Video coding with optimal Inter/Intra-mode switching for packet loss resilience[J]. IEEE Journal on Selected Area of Communications, 2000,18 (6): 966~976.
[10]  [9]ITU-T Standardization Sector. Recommendation H. 263, Video coding for low bit rate communication [S], International Telecommunications Union May 1996.
[11]  [11]Haskell P, Messerschmitt D. Resynchronization of motion compensated video affected by ATM cell loss [A]. In: IEEE Proceedings of International Conference on Acoustics, Speeds and Signal Processing[C], San Fransisco, CA, USA, 1992,3:545~548.

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