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Hierarchical Activity Recognition Using Smart Watches and RGB-Depth Cameras
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Hierarchical Activity Recognition Using Smart Watches and RGB-Depth Cameras
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Hierarchical Activity Recognition Using Smart Watches and RGB-Depth Cameras
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Journal Article
Hierarchical Activity Recognition Using Smart Watches and RGB-Depth Cameras
2016
Overview
Human activity recognition is important for healthcare and lifestyle evaluation. In this paper, a novel method for activity recognition by jointly considering motion sensor data recorded by wearable smart watches and image data captured by RGB-Depth (RGB-D) cameras is presented. A normalized cross correlation based mapping method is implemented to establish association between motion sensor data with corresponding image data from the same person in multi-person situations. Further, to improve the performance and accuracy of recognition, a hierarchical structure embedded with an automatic group selection method is proposed. Through this method, if the number of activities to be classified is changed, the structure will be changed correspondingly without interaction. Our comparative experiments against the single data source and single layer methods have shown that our method is more accurate and robust.
