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基于水印技术的MPEG-4形状错误隐藏 被引量：1

Error Concealment for Shape in MPEG-4 Based on Watermarking
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摘要 MPEG-4编码是一种基于对象内容的第二代视频编码方案,将视频根据内容分割成前景对象和背景。视频对象的信息分为形状信息、纹理信息和运动信息,而形状信息是正确解码视频对象的基础。本文就是针对MPEG-4编码标准中的I-VOP的形状信息的错误进行的错误隐藏。采用的方法有别于传统的曲线插值方法和马尔可夫域最大后验估计方法,首次采用基于鲁棒盲水印的算法,主要是将形状信息或变化作为水印信息嵌入到背景对象中。针对前人提出的方法只能修补小部分的损失,本文对于形状信息严重丢失的修复效果很好。 MPEG - 4 is the second generation video coding standard, based on video objects. One video frame is composed of shape information,texture information and motion information. Shape information is the foundation of exact decoding texture data and motion data. In this paper ,a novel error concealment scheme for I - VOP shape information in MPEG - 4 object - based video coding,is different from curves interpolation and a maximum a posteriori estimator with a Markov Random Field （MRF） ,is based on robustious watermarking, shape dates of I- VOP are embedded into Region of Background（ROB）. The schemes proposed in the past are used in the cases that have a little lose in the edge lose, but the proposed algorithm get better result for strictness lose.
作者 付炜 丁倩 孟维娜 李刚
机构地区 燕山大学信息科学与工程学院
出处 《现代电子技术》 2007年第11期71-73,76,共4页 Modern Electronics Technique
关键词 MPEG-4 二值形状信息 错误隐藏 数字水印 MPEG - 4 binary shape information error concealment digital watermarking
分类号 TN919.81 [电子电信—通信与信息系统]
  • 相关文献

参考文献9

  • 1Wang Y,Wenger S,Wen J,et al.Error Resilient Video Coding Techniques[J].IEEE Signal Processing Mag.Special issue on Multimedia Communications over Networks,2000,17(4):61 -82.
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  • 3Soares L D,Pereira F.Spatial Shape Error Concealment for Object-based Image and Video Coding[J].IEEE Transactions on Image Processing,2004,13(6):586-599.
  • 4Schuster G M,Li X,Katsaggelos A K.Shape Error Concealment Using Hermite Splines[J].IEEE Transactions on Image Processing,2004,13(6):808-820.
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二级参考文献17

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共引文献32

同被引文献9

  • 1Salama P, Huang C. Error Concealemt for Shape Coding[C]. Proceedings of International Conference on Image Processing, Rochester: IEEE, 2002 : 701 - 704.
  • 2Luis D S, Fernando P. Temporal Shape Error Concealment by Global Motion Compensation With Local Refinement[J]. IEEE Transaction on Image Processing, 2006,15 (6): 1331 - 1348.
  • 3Schuster G M,Katsaggelos A K. Motion Compensated Shape Error Concealment[J]. IEEE Trans. Image Processing, 2006,15(2) :501 - 510.
  • 4Chen M J, Chi C C, Chi M C. Spatial and Temporal Error Concealment Algorithms of Shape Information for MPEG -4 video[J]. IEEE Transactions on Circuits Systems for Video Technology,2005,15(6) :778 - 783.
  • 5Luis D S,Fernando P. Spatial Shape Error Concealment for Object - based Image and Video Coding[J]. IEEE Transaction on Image Processing, 2004,13 (4) : 586 - 599.
  • 6ISO/IEC JTC1/SC29/ WGI 1 N3908. MPEG- 4 video verification model version 18.0[S].
  • 7Li X H, Katsaggelos A K, Schuster G M. A Recursive Shape Error Concealment Algorithm[C]. Proceedings of International Conference on Image Processing, Rochester: IEEE, 2002:177 - 180.
  • 8Wang Y,Wenger S, Wen J,et al. Error Resilient Video Coding Techniques[J]. IEEE Signal Processing Magazine Special Issue on Multimedia Communications over Networks,2000, 17(4) :61 - 82.
  • 9Shirani S, Erol B, Kossentini F. A Concealment Method for Shape Information in MPEG- 4 Coded Video Sequences[J]. IEEE Transactions on Multimedia,2000,2(3):185 - 190.

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现代电子技术
2007年 第11期

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