Conference Proceeding Article
Understanding one's group context in indoor spaces is useful for many reasons - e.g., at a shopping mall, knowing a customer's group context can help in offering context-specific incentives, or estimating taxi demand for customers exiting the mall. Group detection and monitoring using WiFi-based indoor location traces fails when users are invisible (either because they don't carry smartphones, or because their WiFi is turned OFF) or when location tracking is inaccurate. In this paper, we propose a multi-modal group detection system that fuses two independent modes: video and WiFi, for detecting groups with low latency and high accuracy. We present preliminary results from a micro-study with 20 group episodes and report an overall precision of 0.81 and recall of 0.9, an improvement of over ≈20% over WiFi-based group detection.
Group Monitoring, Multi-Modal Sensing, Sensor Fusion
Communication Technology and New Media | Technology and Innovation
Software and Cyber-Physical Systems
Proceedings of the 2016 workshop on physical analytics, Singapore, 2016 June 26
Association for Computing Machinery, Inc
City or Country
KASTHURI JAYARAJAH; LANTRA, Mohamed Zaman; and MISRA, Archan.
Fusing WiFi and video sensing for accurate group detection in indoor spaces. (2016). Proceedings of the 2016 workshop on physical analytics, Singapore, 2016 June 26. 49-54. Research Collection School Of Information Systems.
Available at: http://ink.library.smu.edu.sg/sis_research/3636
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