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A low cost human computer interface based on eye tracking.

Jonathan B Hiley1, Andrew H Redekopp, Reza Fazel-Rezai

  • 1Dept. of Electr. & Comput. Eng., Manitoba Univ., Winnipeg, MB, Canada. umhileyj@cc.umanitoba.ca

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
|October 20, 2007
PubMed
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This study presents a low-cost, unobtrusive eye-tracking system for human-computer interaction. The developed video-oculography system achieves real-time gaze point calculation with high accuracy, making advanced technology more accessible.

Area of Science:

  • Human-Computer Interaction
  • Biomedical Engineering
  • Computer Vision

Background:

  • Commercially available eye-tracking systems are often expensive, limiting their widespread adoption.
  • There is a need for affordable and unobtrusive eye-tracking solutions for diverse applications.

Purpose of the Study:

  • To implement a low-cost, unobtrusive human-computer interface using eye-tracking technology.
  • To develop a system that overcomes the cost barriers of existing eye-tracking solutions.

Main Methods:

  • Utilized video-oculography assisted by corneal reflections for eye tracking.
  • Employed an off-the-shelf CCD webcam for image acquisition.
  • Developed software algorithms to analyze eye features and calculate gaze points in real-time.

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Main Results:

  • Achieved a system throughput of eight gaze points per second for responsive interaction.
  • Demonstrated high accuracy with gaze fixations within 1 cm of the on-screen target.
  • Successfully implemented a real-time eye-gaze calculation system.

Conclusions:

  • The developed low-cost eye-tracking system enhances accessibility to this technology.
  • This system offers a viable and affordable alternative for various human-computer interaction applications.
  • The research facilitates broader application of eye-tracking technology due to reduced cost and improved unobtrusiveness.