3D Human Pose Estimation for Free-form Activity Using WiFi Signals

• URL: http://arxiv.org/abs/2110.08314v1
• Date: Fri, 15 Oct 2021 18:47:16 GMT
• Title: 3D Human Pose Estimation for Free-form Activity Using WiFi Signals
• Authors: Yili Ren and Jie Yang
• Abstract summary: Winect is a 3D human pose tracking system for free-form activity using commodity WiFi devices. Our system tracks free-form activity by estimating a 3D skeleton pose that consists of a set of joints of the human body.
• Score: 5.2245900672091
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: WiFi human sensing has become increasingly attractive in enabling emerging human-computer interaction applications. The corresponding technique has gradually evolved from the classification of multiple activity types to more fine-grained tracking of 3D human poses. However, existing WiFi-based 3D human pose tracking is limited to a set of predefined activities. In this work, we present Winect, a 3D human pose tracking system for free-form activity using commodity WiFi devices. Our system tracks free-form activity by estimating a 3D skeleton pose that consists of a set of joints of the human body. In particular, we combine signal separation and joint movement modeling to achieve free-form activity tracking. Our system first identifies the moving limbs by leveraging the two-dimensional angle of arrival of the signals reflected off the human body and separates the entangled signals for each limb. Then, it tracks each limb and constructs a 3D skeleton of the body by modeling the inherent relationship between the movements of the limb and the corresponding joints. Our evaluation results show that Winect is environment-independent and achieves centimeter-level accuracy for free-form activity tracking under various challenging environments including the none-line-of-sight (NLoS) scenarios.

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