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Head-Mounted Miniature Motorized Camera and Laser Pointer Driven by Eye Movements.

Vincent Nourrit1, Jean-Baptiste Lamour2, Bernard Abiven1

  • 1Optics Department, IMT Atlantique, 29238 Brest CEDEX 03, France.

Sensors (Basel, Switzerland)
|April 13, 2023
PubMed
Summary
This summary is machine-generated.

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This study introduces a portable, head-mounted device that records video and uses an eye tracker to control a laser pointer. This technology aids remote training and medical education by enabling precise object identification.

Area of Science:

  • Biomedical Engineering
  • Human-Computer Interaction
  • Optical Engineering

Background:

  • Existing eye-tracking systems for remote interaction are often bulky and lab-bound.
  • There is a need for portable, integrated devices for applications like medical training and remote assistance.

Purpose of the Study:

  • To develop a compact, lightweight, head-mounted device for recording visual attention and enabling remote object pointing.
  • To evaluate different motorization techniques for precise camera and laser pointer control.

Main Methods:

  • A head-mounted device integrating a miniature camera and a laser pointer was constructed.
  • Two motorization systems (pan/tilt and Risley prisms) were implemented and compared.
  • Eye-tracking was used for servo-controlling the device, with local recording and wireless video transmission.
Keywords:
Risley prismdiffractive optical elementeye movementseye trackingpan-tiltpiezo-actuatorpoint-of-view shotwearable camera

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Related Experiment Videos

Last Updated: Aug 2, 2025

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Main Results:

  • The Risley prism system offered finer orientation control (0.1° vs. 0.35°) compared to pan/tilt.
  • Significant latency (~0.5 s) was observed due to data processing and Wi-Fi, limiting real-time eye-tracking control.
  • A Diffractive Optical Element was used to shape the laser beam for improved illumination and recognition.

Conclusions:

  • The developed prototype demonstrates a versatile tool for applications in education, healthcare, and research.
  • Optimization of the data stream is necessary to fully leverage eye-tracking capabilities.
  • Further development could enhance real-time interaction for remote guidance and training.