skip to main content
10.1145/2938559.2938582acmconferencesArticle/Chapter ViewAbstractPublication PagesmobisysConference Proceedingsconference-collections
demonstration

Demo: Fusing WiFi and Video Sensing for Accurate Group Detection in Indoor Spaces

Published: 25 June 2016 Publication History

Abstract

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. We presented GruMon in Sen et. al, which detects groups accurately under accurate localization assumptions or with the availability of inertial sensors from smartphones carried by the users. However, in most real situations, (1) client-side sensory information is not available, and (2) server-side localization is erroneous. Further, detecting people who not carry mobile phones with them (e.g., children/elders and phones with WiFi turned OFF, which we refer to as ``hidden nodes"), and separating out smaller sub-groups from a larger group that happens to share similar trajectories, remains a challenge. In this demo paper, we present our improved system for group detection in indoor environments. We overcome the key challenges of localization errors, presence of hidden nodes and sub-groups by fusing the WiFi and video sensing modalities.

References

[1]
Navneet Dalal and Bill Triggs, Histograms of oriented gradients for human detection, Proc. Of CVPR'05.
[2]
Joseph Redmon, Santosh Divvala, Ross Girshick, and Ali Farhadi, You only look once: Unified, real-time object detection, arXiv preprint arXiv:1506.02640 (2015).
[3]
Rijurekha Sen, Youngki Lee, Kasthuri Jayarajah, Archan Misra, and Rajesh Krishna Balan, Grumon: Fast and accurate group monitoring for heterogeneous urban spaces, Proc. of SenSys '14.

Recommendations

Comments

Information & Contributors

Information

Published In

cover image ACM Conferences
MobiSys '16 Companion: Proceedings of the 14th Annual International Conference on Mobile Systems, Applications, and Services Companion
June 2016
172 pages
ISBN:9781450344166
DOI:10.1145/2938559
Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for third-party components of this work must be honored. For all other uses, contact the Owner/Author.

Sponsors

In-Cooperation

Publisher

Association for Computing Machinery

New York, NY, United States

Publication History

Published: 25 June 2016

Check for updates

Author Tags

  1. group detection
  2. indoor localization
  3. multimodal sensing
  4. video sensing

Qualifiers

  • Demonstration

Funding Sources

  • National Research Foundation Singapore
  • A*STAR Singapore

Conference

MobiSys'16
Sponsor:

Acceptance Rates

Overall Acceptance Rate 274 of 1,679 submissions, 16%

Contributors

Other Metrics

Bibliometrics & Citations

Bibliometrics

Article Metrics

  • 0
    Total Citations
  • 64
    Total Downloads
  • Downloads (Last 12 months)3
  • Downloads (Last 6 weeks)0
Reflects downloads up to 12 Feb 2025

Other Metrics

Citations

View Options

Login options

View options

PDF

View or Download as a PDF file.

PDF

eReader

View online with eReader.

eReader

Figures

Tables

Media

Share

Share

Share this Publication link

Share on social media