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Graph-based approach for human action recognition using spatio-temporal features |
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| Institution: | 1. School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an 710049, PR China;2. State Key Laboratory for Novel Software Technology, Nanjing University, Nanjing 210093, PR China;1. School of Computer & Information, Hefei University of Technology, Hefei 230009, China;2. Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China;3. Institute of Health Sciences, Anhui University, Hefei, Anhui 230601, China |
| Abstract: | Due to the exponential growth of the video data stored and uploaded in the Internet websites especially YouTube, an effective analysis of video actions has become very necessary. In this paper, we tackle the challenging problem of human action recognition in realistic video sequences. The proposed system combines the efficiency of the Bag-of-visual-Words strategy and the power of graphs for structural representation of features. It is built upon the commonly used Space–Time Interest Points (STIP) local features followed by a graph-based video representation which models the spatio-temporal relations among these features. The experiments are realized on two challenging datasets: Hollywood2 and UCF YouTube Action. The experimental results show the effectiveness of the proposed method. |
| Keywords: | Human action recognition Spatio-temporal features Graph-based video modeling Bag-of-sub-Graphs Frequent sub-graphs Support Vector Machines Spatio-temporal Interest Points gSpan algorithm |
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