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ExpertEyes: open-source, high-definition eyetracking.

Francisco J Parada1, Dean Wyatte, Chen Yu

  • 1Department of Psychology, Indiana University, 1101 East 10th Street, Bloomington, IN, 47405, USA.

Behavior Research Methods
|June 18, 2014
PubMed
Summary
This summary is machine-generated.

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ExpertEyes offers a low-cost, open-source solution for portable, high-definition eye tracking. This system achieves accuracy and precision comparable to commercial devices, even in challenging environments.

Area of Science:

  • Biomedical Engineering
  • Computer Vision
  • Human-Computer Interaction

Background:

  • Accurate eye tracking is crucial for research in various fields.
  • Existing commercial eye trackers can be expensive and lack portability.
  • Challenges exist in eye tracking within demanding recording environments.

Purpose of the Study:

  • To introduce ExpertEyes, an open-source, portable, high-definition eye tracking system.
  • To detail the technological innovations enabling its performance.
  • To provide a cost-effective and accessible alternative to commercial systems.

Main Methods:

  • Developed a novel forward eye model for simultaneous pupil and corneal reflection fitting using full ellipses.
  • Utilized high-resolution eye imaging by directly recording to SD cards from uncased digital camcorders.

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  • Implemented offline processing for optimized parameter estimation.

    • Main Results:

    • Achieved typical accuracy of less than 0.4° and best accuracy below 0.3°.
    • Demonstrated typical precision (SD method) around 0.3° and best precision below 0.2°.
    • The system's performance is comparable to or exceeds commercial eye tracking systems.

    Conclusions:

    • ExpertEyes provides a portable, high-definition, and accurate eye tracking solution.
    • The open-source nature and detailed hardware plans promote accessibility and further development.
    • The system is suitable for challenging recording environments and offers a viable alternative to expensive commercial options.