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Action Recognition by Joint Spatial-Temporal Motion Feature

Author

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  • Weihua Zhang
  • Yi Zhang
  • Chaobang Gao
  • Jiliu Zhou

Abstract

This paper introduces a method for human action recognition based on optical flow motion features extraction. Automatic spatial and temporal alignments are combined together in order to encourage the temporal consistence on each action by an enhanced dynamic time warping (DTW) algorithm. At the same time, a fast method based on coarse-to-fine DTW constraint to improve computational performance without reducing accuracy is induced. The main contributions of this study include (1) a joint spatial-temporal multiresolution optical flow computation method which can keep encoding more informative motion information than recent proposed methods, (2) an enhanced DTW method to improve temporal consistence of motion in action recognition, and (3) coarse-to-fine DTW constraint on motion features pyramids to speed up recognition performance. Using this method, high recognition accuracy is achieved on different action databases like Weizmann database and KTH database.

Suggested Citation

  • Weihua Zhang & Yi Zhang & Chaobang Gao & Jiliu Zhou, 2013. "Action Recognition by Joint Spatial-Temporal Motion Feature," Journal of Applied Mathematics, Hindawi, vol. 2013, pages 1-9, June.
    • Handle: RePEc:hin:jnljam:605469
    DOI: 10.1155/2013/605469
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