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首页> 外文会议>Advances in Multimedia Information Processing - PCM 2008 >Accurate Correlation Modeling for Transform-Domain Wyner-Ziv Video Coding
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Accurate Correlation Modeling for Transform-Domain Wyner-Ziv Video Coding

机译：变换域Wyner-Ziv视频编码的精确相关建模

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摘要

In Wyner-Ziv (WZ) video coding, low-complexity encoding is achieved by generating the prediction signal only at the decoder. An accurate model of the correlation between the original frame and its prediction is necessary for efficient coding. Firstly, we propose an improvement for the pixel-domain correlation estimation. In transform-domain WZ video coding current models estimate the necessary correlation parameters directly in the transform domain. We propose an alternative approach, where an accurate estimation in the pixel domain is followed by a novel method of transforming the pixel-domain estimation into the transform domain. The experimental results show that our model leads to average bit-rate gain of 3.5-8%.
机译：在Wyner-Ziv（WZ）视频编码中，低复杂度编码是通过仅在解码器处生成预测信号来实现的。原始帧与其预测之间的相关性的精确模型对于有效编码是必需的。首先，我们提出了一种像素域相关性估计的改进方法。在变换域WZ视频编码中，当前模型直接在变换域中估计必要的相关参数。我们提出了一种替代方法，其中在像素域中进行精确估计，然后是将像素域估计转换为变换域的新颖方法。实验结果表明，我们的模型导致平均比特率增益为3.5-8％。

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  • 来源
  • 会议地点 Tainan(CT);eTainan(CT)
  • 作者

    Jozef Skorupa; Juergen Slowack; Stefaan Mys; Peter Lambert; Rik Van de Walle;

  • 作者单位

    Ghent University - IBBT Department of Electronics and Information Systems - Multimedia Lab Gaston Crommenlaan 8 bus 201, B-9050 Ledeberg-Ghent, Belgium;

    Ghent University - IBBT Department of Electronics and Information Systems - Multimedia Lab Gaston Crommenlaan 8 bus 201, B-9050 Ledeberg-Ghent, Belgium;

    Ghent University - IBBT Department of Electronics and Information Systems - Multimedia Lab Gaston Crommenlaan 8 bus 201, B-9050 Ledeberg-Ghent, Belgium;

    Ghent University - IBBT Department of Electronics and Information Systems - Multimedia Lab Gaston Crommenlaan 8 bus 201, B-9050 Ledeberg-Ghent, Belgium;

    Ghent University - IBBT Department of Electronics and Information Systems - Multimedia Lab Gaston Crommenlaan 8 bus 201, B-9050 Ledeberg-Ghent, Belgium;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计算机网络;
  • 关键词

    correlation model; distributed video coding; online estimation; transform domain; wyner-ziv video coding;

    机译：相关模型分布式视频编码；在线估算；转换域wyner-ziv视频编码;

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