Mr. Yuxin Chen Profile

Yuxin Chen

at Yanshan Univ

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Proceedings Article | 24 November 2014 Paper

Human action recognition based on spatial-temporal descriptors using key poses

Shuo Hu, Yuxin Chen, Huaibao Wang, Yaqing Zuo

Proceedings Volume 9301, 930132 (2014) https://doi.org/10.1117/12.2073115

KEYWORDS: Video, Pattern recognition, Feature extraction, Distributed interactive simulations, Virtual reality, Video surveillance, Surveillance, 3D image processing, RGB color model, Computer engineering

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Human action recognition is an important area of pattern recognition today due to its direct application and need in various occasions like surveillance and virtual reality. In this paper, a simple and effective human action recognition method is presented based on the key poses of human silhouette and the spatio-temporal feature. Firstly, the contour points of human silhouette have been gotten, and the key poses are learned by means of K-means clustering based on the Euclidean distance between each contour point and the centre point of the human silhouette, and then the type of each action is labeled for further match. Secondly, we obtain the trajectories of centre point of each frame, and create a spatio-temporal feature value represented by W to describe the motion direction and speed of each action. The value W contains the information of location and temporal order of each point on the trajectories. Finally, the matching stage is performed by comparing the key poses and W between training sequences and test sequences, the nearest neighbor sequences is found and its label supplied the final result. Experiments on the public available Weizmann datasets show the proposed method can improve accuracy by distinguishing amphibious poses and increase suitability for real-time applications by reducing the computational cost.

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