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基于EM算法相关噪声模型估计的Wyner-Ziv分级视频编码 被引量：1

Wyner-Ziv Scalable Video Coding Based on EM Algorithm for Correlation Noise Model Estimation
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摘要 文中提出了一种基于EM算法的相关噪声模型估计的Wyner-Ziv分级视频编码方法,基本层用复杂度相对较低的DISCOVER相关噪声模型参数估计方法,保证了基本的图像质量;增强层利用EM算法在线学习,建立相关噪声模型。实验结果表明,文中提出的噪声模型估计算法与DISCOVER的噪声模型相比,在相关噪声分布有拖尾现象时,能使编码器的率失真性能明显提高。 Wyner-Ziv scalable video coding method based on EM algorithm for correlation noise model estimation is presented in this paper.Low-complexity correlation noise model parameter estimation of DISCOVER is used in the base layer to guarantee the basic image quality.EM algorithm is used on online learning and setting correlation noise model.The results show that,compared with the DISCOVER＇s noise model,the rate distortion performance of the Wyner-ziv coder is improved with the noise model estimation algorithm proposed in the paper when the correlation noise has long tails.
作者 胡晓飞 朱秀昌
机构地区 南京邮电大学江苏省图像处理与图像通信重点实验室 南京邮电大学地理与生物信息学院
出处 《南京邮电大学学报（自然科学版）》 2010年第6期54-58,共5页 Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition
基金 江苏省高等学校研究生创新计划项目(CX07B_107z) 南京邮电大学青蓝计划(NY207077)资助项目
关键词 WYNER-ZIV DISCOVER 期望最大化 相关噪声模型 参数估计 Wyner-Ziv DISCOVER expectation maximization correlation noise model parameter estimation
分类号 TN919.81 [电子电信—通信与信息系统]
  • 相关文献

参考文献10

  • 1AARON A,RANE S,SETTON E,et al.Transform-domain Wyner-Ziv codec for video[C] ∥Proceedings of SPIE Visual Communications and Image Processing.San Jose,CA,USA,2004:520-528.
  • 2AARON A,ZHANG R,GIROD B.Wyner-Ziv coding of motion video[C] ∥Proceedings of Asilomar Conference on Signals and Systems.Pacific Grove,CA,2002:240-244.
  • 3DISCOVER Page[EB/OL].http:∥www.discoverdvc.org.
  • 4DELIGIANNIS N,MUNTEANU A,CLERCKX T,et al.Correlation channel estimation in pixel-domain distributed video coding[C] ∥WIAMIS.London,United Kingdom,2009:93-96.
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  • 9http:∥www.stanford.edu/-divad/software/ldpca.zip.
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二级参考文献10

  • 1THE DISCOVER CODEC,the IST FETprogramme of the European Union within the FP6/2002/IST/C Call. http://www.discoverdvc.org/cont-Codec.ht ml . 2008
  • 2Meyer A,Westerlaken P,Gunnewiek K,Lagendijk R.Dis-tributed source coding of video with non-stationary side-infor-mation[].Proceedings of the Visual Communications and I m-age Processing (VCIP).2005
  • 3Aaron A,Zhang R,Girod B.Wyner-Ziv coding of motion video[].Proceedings of the Asilomar Conference on Signals and Systems.2002
  • 4Kubasov D,Guillemot C.Mesh-based motion-compensated interpolation for side information extraction in distributed video coding[].Proceedings of the International Conference on I mage Processing (ICIP).2006
  • 5Westerlaken P,Gunnewiek K,Lagendijk R.The role of the virtual channel in distributed source coding of video[].Pro-ceedings of the International Conference on I mage Processing (ICIP).2005
  • 6Guo X,Lu Y,Wu F,Gao W,Li S.Wyner-Ziv video coding based on set partitioning in hierarchical tree[].Proceedings of the IEEE International Conference on I mage Processing (ICIP).2006
  • 7Ishwar P,Prabhakaran V,Ramchandran K.Towards a the-ory for video coding using distributed compression princi-ples[].Proceedings of theInternational Conference on I mage Processing (ICIP).2003
  • 8Wang Y,Ostermann J,Zhang Y.Video Processing and Communications[]..2005
  • 9Puri R,Majumdar A,Ramchandran K.PRISM:A video coding paradigm with motion esti mation at the decoder[].IEEE Transactions onI mage Processing.2007
  • 10Aaron A,Rane S,Setton E,Girod B.Transform-domain Wyner-Ziv codec for video[].Proceedings of the SPIE Visual Communications and I mage Processing.2004

共引文献6

同被引文献8

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  • 7李红波,唐培竣,吴渝.Kalman滤波器对混合高斯背景建模的改进[J].计算机工程与应用,2009,45(24):162-164. 被引量：9
  • 8孟勃,朱明.采用EM算法对粒子滤波跟踪算法进行改进[J].中国图象图形学报,2009,14(9):1745-1749. 被引量：4

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南京邮电大学学报（自然科学版）
2010年 第6期

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