Simultaneous Learning from Human Pose and Object Cues for Real-Time Activity Recognition

• URL: http://arxiv.org/abs/2004.03453v1
• Date: Thu, 26 Mar 2020 22:04:37 GMT
• Title: Simultaneous Learning from Human Pose and Object Cues for Real-Time Activity Recognition
• Authors: Brian Reily, Qingzhao Zhu, Christopher Reardon, and Hao Zhang
• Abstract summary: We propose a novel approach to real-time human activity recognition, through simultaneously learning from observations of both human poses and objects involved in the human activity. Our method outperforms previous methods and obtains real-time performance for human activity recognition with a processing speed of 104 Hz.
• Score: 11.290467061493189
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Real-time human activity recognition plays an essential role in real-world human-centered robotics applications, such as assisted living and human-robot collaboration. Although previous methods based on skeletal data to encode human poses showed promising results on real-time activity recognition, they lacked the capability to consider the context provided by objects within the scene and in use by the humans, which can provide a further discriminant between human activity categories. In this paper, we propose a novel approach to real-time human activity recognition, through simultaneously learning from observations of both human poses and objects involved in the human activity. We formulate human activity recognition as a joint optimization problem under a unified mathematical framework, which uses a regression-like loss function to integrate human pose and object cues and defines structured sparsity-inducing norms to identify discriminative body joints and object attributes. To evaluate our method, we perform extensive experiments on two benchmark datasets and a physical robot in a home assistance setting. Experimental results have shown that our method outperforms previous methods and obtains real-time performance for human activity recognition with a processing speed of 10^4 Hz.

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