Parallax error in the monocular head-mounted eye trackers

Diako Mardanbeigi, Dan Witzner Hansen

Research output: Conference Article in Proceeding or Book/Report chapterArticle in proceedingsResearchpeer-review


This paper investigates the parallax error, which is a common problem of many video-based monocular mobile gaze trackers. The parallax error is defined and described using the epipolar geometry in a stereo camera setup. The main parameters that change the error are introduced and it is shown how each parameter affects the error. The optimum distribution of the error (magnitude and direction) in the field of view varies for different applications. However, the results can be used for finding the optimum parameters that are needed for designing a head-mounted gaze tracker. It has been shown that the difference between the visual and optical axes does not have a significant effect on the parallax error, and the epipolar geometry can be used for describing the parallax error in the HMGT.
Original languageEnglish
Title of host publicationUbiComp '12 Proceedings of the 2012 ACM Conference on Ubiquitous Computing
Number of pages6
Publication date2012
ISBN (Print)978-1-4503-1224-0
Publication statusPublished - 2012
EventThe 14th International Conference on Ubiquitous Computing - Pittsburgh, United States
Duration: 5 Sept 20128 Sept 2012


ConferenceThe 14th International Conference on Ubiquitous Computing
Country/TerritoryUnited States
Internet address


  • Head-mounted gaze tracker
  • Parallax error
  • Mobile gaze tracker
  • epipolar geometry


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