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Holmqvist, Kenneth ; Örbom, Saga Lee ; Miller, Michael ; Kashchenevsky, Albert ; Shovman, Mark M. ; Greenlee, Mark W.

Validation of a prototype hybrid eye-tracker against the DPI and the Tobii Spectrum

Holmqvist, Kenneth, Örbom, Saga Lee, Miller, Michael, Kashchenevsky, Albert, Shovman, Mark M. and Greenlee, Mark W. (2020) Validation of a prototype hybrid eye-tracker against the DPI and the Tobii Spectrum. In: ETRA '20: 2020 Symposium on Eye Tracking Research and Applications, June 2 - 5, 2020, Stuttgart Germany.

Date of publication of this fulltext: 26 Oct 2023 06:08
Conference or workshop item


Abstract

We benchmark a new hybrid eye-tracker system against the DPI (Dual Purkinje Imaging) tracker and the Tobii Spectrum in a series of three experiments. In a first within-subjects battery of tests, we show that the precision of the new eye-tracker is much better than that of both the DPI and the Spectrum, but that accuracy is not better. We also show that the new eye-tracker is insensitive to ...

We benchmark a new hybrid eye-tracker system against the DPI (Dual Purkinje Imaging) tracker and the Tobii Spectrum in a series of three experiments. In a first within-subjects battery of tests, we show that the precision of the new eye-tracker is much better than that of both the DPI and the Spectrum, but that accuracy is not better. We also show that the new eye-tracker is insensitive to effects of pupil contraction on gaze direction (in contrast to both the DPI and the Spectrum), that it detects microsaccades on par with the DPI and better than the Spectrum, and that it can possibly record tremor. In the second experiment, sensors of the novel eye-tracker were integrated into the optical path of the DPI bench. Simultaneous recordings show that saccade dynamics, post-saccadic oscillations and measurements of translational movements are comparable to those of the DPI. In the third experiment, we show that the DPI and the new eye-tracker are capable of detecting 2 arcmin artificial-eye rotations while the Spectrum cannot. Results suggest that the new eye-tracker, in contrast to video-based P-CR systems [Holmqvist and Blignaut 2020], is suitable for studies that record small eye-movements under varying ambient light levels.



Involved Institutions


Details

Item typeConference or workshop item (UNSPECIFIED)
ISBN978-1-4503-7133-9
Title of Book:ETRA '20 Full Papers: ACM Symposium on Eye Tracking Research and Applications
Publisher:Association for Computing Machinery
Place of Publication:New York, United States
Number of Issue or Book Chapter:6
Page Range:pp. 1-9
Date2020
InstitutionsHuman Sciences > Institut für Psychologie > Lehrstuhl für Psychologie I (Allgemeine Psychologie I und Methodenlehre) - Prof. Dr. Mark W. Greenlee
Identification Number
ValueType
10.1145/3379155.3391330DOI
Dewey Decimal Classification100 Philosophy & psychology > 150 Psychology
StatusPublished
RefereedYes, this version has been refereed
Created at the University of RegensburgPartially
URN of the UB Regensburgurn:nbn:de:bvb:355-epub-536997
Item ID53699

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