We describe a high-performance, pupil-based binocular eye tracker that approaches the performance of a well-established commercial system, but at a fraction of the cost. The eye tracker is built from standard hardware components, and its software (written in Visual C++) can be easily implemented. Because of its fast and simple linear calibration scheme, the eye tracker performs best in the central 10 degrees of the visual field. The eye tracker possesses a number of useful features: (1) automated calibration simultaneously in both eyes while subjects fixate four fixation points sequentially on a computer screen, (2) automated real-time continuous analysis of measurement noise, (3) automated blink detection, (4) and real-time analysis of pupil centration artifacts. This last feature is critical because it is known that pupil diameter changes can be erroneously registered by pupil-based trackers as a change in eye position. We evaluated the performance of our system against that of a well-established commercial system using simultaneous measurements in 10 participants. We propose our low-cost eye tracker as a promising resource for studies of binocular eye movements.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    A low-cost, high-performance video-based binocular eye tracker for psychophysical research


    Beteiligte:

    Erscheinungsdatum :

    2021-05-05


    Anmerkungen:

    doi:10.16910/jemr.14.3.3
    Journal of Eye Movement Research; Bd. 14 Nr. 3: Special issue "Eye Tracking Methods and their Assessment of Data Quality" ; Journal of Eye Movement Research; Vol. 14 No. 3: Special issue "Eye Tracking Methods and their Assessment of Data Quality" ; 1995-8692



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Klassifikation :

    DDC:    629



    Binocular luminance interactions due to near responses at suprathreshold conditions: psychophysical evidence [4419-415]

    Medina, J. M. / Jimenez, J. R. / Del Barco, L. J. et al. | British Library Conference Proceedings | 2001


    Driver’s Psychophysical Performance at Urban Tunnel

    Xu, Qian ;Shao, Fei ;Guo, Tang Yi | Trans Tech Publications | 2014


    New low cost solar tracker

    Poulek, V. | Online Contents | 1994


    Stereoscopic Video Weld-Seam Tracker

    Kennedy, Larry Z. | NTRS | 1991


    Bi-layer segmentation of binocular stereo video

    Kolmogorov, V. / Criminisi, A. / Blake, A. et al. | IEEE | 2005