Fine-grained Multi-user Device-Free Gesture Tracking on Today's Smart Speakers
2021
会议录名称2021 IEEE 18TH INTERNATIONAL CONFERENCE ON MOBILE AD HOC AND SMART SYSTEMS (MASS 2021)
ISSN2155-6806
发表状态已发表
DOI10.1109/MASS52906.2021.00021
摘要

Smart speakers play an important role in smart home envision. Active acoustic sensing can enable convenient gesture interaction on smart speakers to complement voice interaction in mandatory quiet scenarios and address privacy concerns. However, existing solutions did not consider the impact of the widely adopted uniform circular geometry of commercial smart speakers on gesture tracking. To fill this gap, we propose SparseTrack to achieve fine-grained multi-user device-free gesture tracking on commercial smart speakers. We cast gesture tracking to sparse recovery intuition to address signal coherence issue on uniform circular mic-array. We then synthesize wideband measurement to eliminate spatial ambiguity caused by the insufficient spatial sampling rate of today's smart speakers in the ultrasonic frequency band. We further design a robust trace extraction approach and properly handle the impact of the doppler effect on gesture tracking. We implement SparseTrack on COTS circular mic-array and conduct extensive evaluations. The results show that our system can simultaneously track up to 4 users' gestures with a mean tracking error of 2.66 cm.

关键词Acoustic Sensing Device-free Smart Speaker
会议名称18th IEEE International Conference on Mobile Ad hoc and Smart Systems (IEEE MASS)
出版地10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA
会议地点null,null,ELECTR NETWORK
会议日期OCT 04-07, 2021
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收录类别EI ; CPCI ; CPCI-S
语种英语
WOS研究方向Computer Science ; Telecommunications
WOS类目Computer Science, Artificial Intelligence ; Computer Science, Hardware & Architecture ; Computer Science, Information Systems ; Computer Science, Theory & Methods ; Telecommunications
WOS记录号WOS:000759773400012
出版者IEEE COMPUTER SOC
来源库IEEE
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文献类型会议论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/162920
专题信息科学与技术学院_PI研究组_杨智策组
信息科学与技术学院_硕士生
通讯作者Zhu, Ningzhi
作者单位
1.ShanghaiTech Univ, Shanghai, Peoples R China
2.Huawei Theory Lab, Hong Kong, Peoples R China
第一作者单位上海科技大学
通讯作者单位上海科技大学
第一作者的第一单位上海科技大学
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GB/T 7714
Zhu, Ningzhi,Chen, Huangxun,Yang, Zhice. Fine-grained Multi-user Device-Free Gesture Tracking on Today's Smart Speakers[C]. 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA:IEEE COMPUTER SOC,2021.
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