Document Type
Article
Publication Date
12-2021
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.
DOI
10.1145/3494973
Publisher
Association for Computing Machinery
Repository Citation
Ren, Y., Wang, Z., Tan, S., Chen, Y., & Yang, J. (2021). Winect: 3D human pose tracking for free-form activity using commodity wifi. Proceedings of the ACM on interactive, mobile, wearable and ubiquitous technologies, 5(4), Article 176. https://doi.org/10.1145/3494973
Publication Information
Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.