PolarTrack: Optical Outside-In Device Tracking that Exploits Display Polarization

Roman Rädle, Hans-Christian Jetter, Jonathan Fischer, Inti Gabriel, Clemens Nylandsted Klokmose, Harald Reiterer, Christian Holz

Research output: Chapter in Book/Report/Conference proceedingsConference contributionpeer-review

12 Citations (Scopus)


PolarTrack is a novel camera-based approach to detecting and tracking mobile devices inside the capture volume. In Po-larTrack, a polarization filter continuously rotates in front of an off-the-shelf color camera, which causes the displays of observed devices to periodically blink in the camera feed. The periodic blinking results from the physical characteristics of current displays, which shine polarized light either through an LC overlay to produce images or through a polarizer to reduce light reflections on OLED displays. PolarTrack runs a simple detection algorithm on the camera feed to segment displays and track their locations and orientations, which makes PolarTrack particularly suitable as a tracking system for cross-device interaction with mobile devices. Our evaluation of PolarTrack's tracking quality and comparison with state-of-the-art camera-based multi-device tracking showed a better tracking accuracyand precision with similar tracking reliability. PolarTrack works as standalone multi-device tracking but is also compatible with existing camera-based tracking systems and can complement them to compensate for their limitations.

Original languageEnglish
Title of host publicationCHI 2018 - Extended Abstracts of the 2018 CHI Conference on Human Factors in Computing Systems
Subtitle of host publicationEngage with CHI
PublisherACM Press
ISBN (Electronic)9781450356206, 9781450356213
Publication statusPublished - 20 Apr 2018
EventACM Conference on Human Factors in Computing Systems (CHI 2018) - Montreal, Canada
Duration: 21 Apr 201826 Apr 2018

Publication series

NameConference on Human Factors in Computing Systems - Proceedings


ConferenceACM Conference on Human Factors in Computing Systems (CHI 2018)
Internet address


  • Cross-device
  • Display polarization
  • Multi-device
  • Spatial interaction
  • Tracking technology


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