Human action recognition based on pyramid histogram of oriented gradients
Wang, Jin, Liu, Ping, She, Mary F. H., Kouzani, Abbas and Nahavandi, Saeid 2011, Human action recognition based on pyramid histogram of oriented gradients, in SMC 2011 : Conference proceeding of the 2011 International Conference on Systems, Man, and Cybernetics, IEEE, Piscataway, N. J., pp. 2449-2454.
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Human action recognition based on pyramid histogram of oriented gradients
Human action recognition has been attracted lots of interest from computer vision researchers due to its various promising applications. In this paper, we employ Pyramid Histogram of Orientation Gradient (PHOG) to characterize human figures for action recognition. Comparing to silhouette-based features, the PHOG descriptor does not require extraction of human silhouettes or contours. Two state-space models, i.e.; Hidden Markov Model (HMM) and Conditional Random Field (CRF), are adopted to model the dynamic human movement. The proposed PHOG descriptor and the state-space models with respect to different parameters are tested using a standard dataset. We also testify the robustness of the method with respect to various unconstrained conditions and viewpoints. Promising experimental result demonstrates the effectiveness and robustness of our proposed method.