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Cost-effective gaze tracking system based on polymer fiber specklegrams.
Optics Letters
|September 13, 2024
Summary
This study introduces a novel, low-cost gaze tracking system using plastic optical fibers (POF) to eliminate cameras in VR/AR devices. The system achieves 96.9% accuracy in classifying gaze directions, offering potential for AR glasses and HCI applications.
Area of Science:
- Optoelectronics
- Computer Vision
- Human-Computer Interaction
Background:
- Gaze tracking is crucial for Virtual Reality/Augmented Reality (VR/AR) applications.
- Current systems often require bulky in-device cameras, increasing cost and complexity.
Purpose of the Study:
- To develop a camera-free gaze tracking system for VR/AR glasses.
- To utilize plastic optical fibers (POF) as an alternative light transmission medium.
Main Methods:
- A plastic optical fiber (POF) was engineered with two fan-shaped surfaces to couple light from the eye.
- Reflected eye light was transmitted through the POF for external processing.
- SE-Resnet18 classified specklegrams from 76 distinct gaze directions.
Main Results:
- The POF-based system successfully transmitted eye-reflected light for processing.
- SE-Resnet18 achieved 96.9% accuracy in classifying 76 different gaze directions.
- The system demonstrated a low-cost and simple structure.
Conclusions:
- The proposed POF gaze tracking system offers a viable, camera-free alternative for VR/AR devices.
- This technology holds significant potential for applications in AR glasses, human-computer interaction (HCI), and medical diagnostics.
