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Object Activity Scene Description, Construction, and Recognition
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DOI：10.1109/TCYB.2019.2904901.png)
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Abstract
En 中文
Action recognition is a critical task for social robots to meaningfully engage with their environment. 3-D human skeleton-based action recognition has been an attractive research area in recent years. Although the existing approaches are good at action recognition, it is a great challenge to recognize a group of actions in an activity scene. To tackle this problem, at first, we partition the scene into several primitive actions (PAs)-based upon motion attention mechanism. Then, the PAs are described by the trajectory vectors of the corresponding joints. After that, motivated by text classification based on word embedding, we employ a convolutional neural network (CNN) to recognize activity scenes by considering motion of joints as word of activity. The experimental results on the dataset of human activity scenes show the efficiency of the proposed approach.
Keywords:
Skeleton
Feature extraction
Hip
Cybernetics
Trajectory
Data mining
Histograms
Convolutional neural network (CNN)
primitive actions (PAs)
scene recognition
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