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A Functional Usability Analysis of Appearance-Based Gaze Tracking for Accessibility.

Youn Soo Park1, Roberto Manduchi1

  • 1University of California, Santa Cruz, Santa Cruz, CA, USA.

Proceedings. Eye Tracking Research & Applications Symposium
|August 15, 2024
PubMed
Summary

Appearance-based gaze tracking (ABGT) shows promise for accessibility, enabling computer interaction for individuals with motor and visual impairments. FAZE algorithm demonstrated usability in tasks like dwell-based selection and reading progression.

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Area of Science:

  • Human-Computer Interaction
  • Computer Vision
  • Assistive Technology

Background:

  • Appearance-based gaze tracking (ABGT) offers a non-intrusive alternative to infrared systems.
  • Machine learning has significantly improved ABGT accuracy.
  • Standard benchmarks may not reflect real-world usability for assistive applications.

Purpose of the Study:

  • To evaluate the usability of the state-of-the-art FAZE algorithm for human-computer interaction tasks.
  • To assess FAZE's suitability for dwell-based selection and reading progression functionalities.
  • To compare the data quality of FAZE against an infrared gaze tracker.

Main Methods:

  • Evaluation of the FAZE algorithm in specific human-computer interaction tasks.
  • Comparison of gaze data quality between FAZE and a Tobii Pro Spark infrared tracker.
Keywords:
DwellingGaze EstimationText Reading

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  • Data collection from 7 human participants performing defined tasks.

    • Main Results:

    • FAZE demonstrated usability for dwell-based selection and reading progression.
    • Analysis of gaze data quality showed comparable results between FAZE and the infrared tracker.
    • The study highlighted the functional applicability of appearance-based gaze tracking.

    Conclusions:

    • Appearance-based gaze tracking, exemplified by FAZE, is a viable technology for assistive applications.
    • FAZE shows potential for enhancing computer accessibility for users with motor and visual impairments.
    • Further research can explore broader applications of ABGT in accessibility.