If you see something, swipe towards it: Crowdsourced event localization using smartphones

Robin Wentao Ouyang, Animesh Srivastava, Prithvi Prabahar, Romit Roy Choudhury, Merideth Addicott, F. Joseph McClernon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents iSee, a crowdsourced approach to detecting and localizing events in outdoor environments. Upon spotting an event, an iSee user only needs to swipe on her smartphone's touchscreen in the direction of the event. These swiping directions are often inaccurate and so are the com- pass measurements. Moreover, the swipes do not encode any notion of how far the event is located from the user, neither is the GPS location of the user accurate. Furthermore, multiple events may occur simultaneously and users do not explicitly indicate which events they are swiping towards. Nonetheless, as more users start contributing data, we show that our proposed system is able to quickly detect and estimate the locations of the events. We have implemented iSee on An- droid phones and have experimented in real-world settings by planting virtual "events" in our campus and asking volunteers to swipe on seeing one. Results show that iSee performs appreciably better than established triangulation and clustering- based approaches, in terms of localization accuracy, detection coverage, and robustness to sensor noise.

Original languageEnglish (US)
Title of host publicationUbiComp 2013 - Proceedings of the 2013 ACM International Joint Conference on Pervasive and Ubiquitous Computing
Pages23-32
Number of pages10
DOIs
StatePublished - 2013
Externally publishedYes
Event2013 ACM International Joint Conference on Pervasive and Ubiquitous Computing, UbiComp 2013 - Zurich, Switzerland
Duration: Sep 8 2013Sep 12 2013

Publication series

NameUbiComp 2013 - Proceedings of the 2013 ACM International Joint Conference on Pervasive and Ubiquitous Computing

Other

Other2013 ACM International Joint Conference on Pervasive and Ubiquitous Computing, UbiComp 2013
CountrySwitzerland
CityZurich
Period9/8/139/12/13

Keywords

  • Crowdsourcing
  • Event localization
  • Smartphone sensing

ASJC Scopus subject areas

  • Software

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