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| Sparse Representation Method for Human Interaction |
| CHEN Changhong, ZHANG Jie, LIU Feng |
| Jiangsu Provincial Key Laboratory of Image Processing and Image Communication, Nanjing University of Posts and Telecommunications, Nanjing 210003 |
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Abstract In this paper, a sparse representation method for human interaction is proposed. The trajectory feature embodying global changes is fused with spatio-temporal feature emphasizing local movement. Firstly, the sparse representation of the trajectory feature is obtained by the bag of words model. Then, multi-level spatio-temporal features are produced by three layered spatial-temporal pyramid and processed by sparse coding. Multi-scale maxpooling algorithm is employed to obtain the local sparse feature. Finally, two kinds of sparse features are weighted and connected to obtain the sparse representation of human interaction. The dynamic latent conditional random field model is employed to verify the proposed sparse representation and the experimental results demonstrate the effectiveness.
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Received: 13 May 2015
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About author:: 陈昌红(通讯作者),女,1982年生,博士,副教授,主要研究方向为图像理解、视频分析.E-mail:chenchh@njupt.edu.cn.
(CHEN Changhong(Corresponding author),born in 1982, Ph.D., associate professor. Her research interests include image understanding and video analysis.)
张 杰,男,1985年生,硕士研究生,主要研究方向为视频分析.E-mail:11212012116@njupt.edu.cn.
(ZHANG Jie, born in 1985, master student. His research interests include video analysis.)
刘 峰,男,1964年生,博士,教授,主要研究方向为视频分析、多媒体通信.E-mail:liuf@njupt.edu.cn.
(LIU Feng, born in 1964, Ph.D., professor. His research interests include video analysis and multimedia communication.) |
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2016, Vol. 29 
