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Related Experiment Videos

Fundus based eye tracker for optical coherence tomography.

Louisa Pui Sum Ip1, Truong Q Nguyen, Dirk-Uwe Bartsch

  • 1Dept. of Electr. & Comput. Eng., California Univ., San Diego, CA, USA.

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
|February 3, 2007
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A new software-based eye tracking system enables real-time internal eye tracking for optical coherence tomography (OCT). This robust system works even with low-quality images, improving OCT usability for patients with eye complications.

Area of Science:

  • Ophthalmology
  • Biomedical Engineering
  • Computer Vision

Background:

  • Current optical coherence tomography (OCT) requires patient cooperation for fixation, which is challenging for individuals with eye complications.
  • Existing external eye trackers and hardware-based fundus trackers are not ideal for OCT integration due to limitations in portability and compatibility.

Purpose of the Study:

  • To develop a novel, software-based, real-time internal eye tracking system for OCT.
  • To overcome the limitations of current eye tracking methods for OCT, particularly for patients with fixation difficulties.

Main Methods:

  • Implementation of an intensity-based object tracking adaptive mean shift algorithm.
  • Integration of Kalman filtering techniques for robust real-time performance.

Related Experiment Videos

  • Development of a system installable on a computer connected to the OCT, eliminating the need for external hardware.

    • Main Results:

    • The proposed system achieves robust real-time eye tracking.
    • The algorithm demonstrates effectiveness even with low-resolution, coarsely quantized, or noisy images.
    • No image pre-processing is required, simplifying the workflow.

    Conclusions:

    • The developed software-based eye tracking system offers a portable and desirable solution for OCT.
    • This advancement can significantly improve OCT imaging for patients unable to maintain fixation.
    • The system's robustness to image quality issues makes it a versatile tool in ophthalmology.