期刊文献+

基于视觉感知的时空联合视频拷贝检测方法 被引量:11

Spatiotemporal Video Copy Detection Based on Visual Perception Analyses
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摘要 视频拷贝检测在视频信息检索和版权保护等方面有着重要意义.文中依据视觉感知特性,认为现有的基于单帧的拷贝检测方法未充分利用视频的时空相关性,进而在利用这一重要特性进行拷贝检测方面进行了探讨.依据自然图像序列的时空相关性以及视觉系统对时空信息的感知特性,通过对时空切片单元块Sub进行DCT分析得到与视频内容相关的时空联合特征,并基于该特征提出视频拷贝检测算法.实验表明,文中所提出的视频拷贝检测方法对视频内容变化敏感而对相同内容视频格式上的变化鲁棒,表现出优于现有方法的性能. A novel spatiotemporal video copy detection method based on visual perception leatures is proposed in this paper. The method differs from the conventional video copy detection algorithms in that it does not using key frame based features any more. By extracting visual perception based spatiotemporal correlation of slice in frequency domain using DCT, the proposed method possesses both robustness and discriminability for video copy detection. It copes well with not only the format, resolution variation of video hut also the aspect ratio change. Even more, the method is robust to display format conversion such as adding pillar-box. The experiment results show the proposed method is effective and robust.
出处 《计算机学报》 EI CSCD 北大核心 2009年第1期107-114,共8页 Chinese Journal of Computers
基金 国家“九七三”重点基础研究发展规划项目基金(2007CB311100) 国家“八六三”高技术研究发展计划项目基金(2007AA01Z416) 国家自然科学基金(60773056) 北京市科技新星计划(2007B071)资助~~
关键词 视频拷贝检测 视觉感知 时空相关 时空切片 DCT video copy detection visual perception spatiotemporal correlation spatiotemporal slice DCT
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参考文献15

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同被引文献84

  • 1张波,田蔚风,金志华.Joint tracking algorithm using particle filter and mean shift with target model updating[J].Chinese Optics Letters,2006,4(10):569-572. 被引量:12
  • 2耿玉亮,须德,冯松鹤.一种快速有效的视频镜头边界检测方法[J].电子学报,2006,34(12):2272-2277. 被引量:11
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