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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.
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Details
| Item type | Conference or workshop item (UNSPECIFIED) | ||||
| ISBN | 978-1-4503-7133-9 | ||||
| Title of Book: | ETRA '20 Full Papers: ACM Symposium on Eye Tracking Research and Applications | ||||
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| Publisher: | Association for Computing Machinery | ||||
| Place of Publication: | New York, United States | ||||
| Number of Issue or Book Chapter: | 6 | ||||
| Page Range: | pp. 1-9 | ||||
| Date | 2020 | ||||
| Institutions | Human Sciences > Institut für Psychologie > Lehrstuhl für Psychologie I (Allgemeine Psychologie I und Methodenlehre) - Prof. Dr. Mark W. Greenlee | ||||
| Identification Number |
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| Dewey Decimal Classification | 100 Philosophy & psychology > 150 Psychology | ||||
| Status | Published | ||||
| Refereed | Yes, this version has been refereed | ||||
| Created at the University of Regensburg | Partially | ||||
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-536997 | ||||
| Item ID | 53699 |
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