PolarTrack: Optical outside-indevicetracking that exploits displaypolarization

TY - GEN

T1 - PolarTrack

T2 - 2018 CHI Conference on Human Factors in Computing Systems, CHI 2018

AU - Rädle, Roman

AU - Jetter, Hans Christian

AU - Fischer, Jonathan

AU - Gabriel, Inti

AU - Klokmose, Clemens N.

AU - Reiterer, Harald

AU - Holz, Christian

PY - 2018/4/20

Y1 - 2018/4/20

N2 - 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.

AB - 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.

KW - Cross-device

KW - Display polarization

KW - Multi-device

KW - Spatial interaction

KW - Tracking technology

UR - http://www.scopus.com/inward/record.url?scp=85046938739&partnerID=8YFLogxK

U2 - 10.1145/3173574.3174071

DO - 10.1145/3173574.3174071

M3 - Article in proceedings

AN - SCOPUS:85046938739

VL - 2018-April

BT - CHI 2018 - Extended Abstracts of the 2018 CHI Conference on Human Factors in Computing Systems

PB - Association for Computing Machinery

Y2 - 21 April 2018 through 26 April 2018

ER -