A hybrid high speed eye tracking sensor by fusion of video oculography and laser feedback interferometry

Johannes Meyer; Michael Mühlbauer

doi:10.1117/12.2690814

12 March 2024 A hybrid high speed eye tracking sensor by fusion of video oculography and laser feedback interferometry

Johannes Meyer, Michael Mühlbauer

Proceedings Volume 12913, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) V; 129130K (2024) https://doi.org/10.1117/12.2690814
Event: SPIE AR | VR | MR, 2024, San Francisco, California, United States

Abstract

High-speed eye tracking is a key requirement for upcoming AR and VR devices, as it enables novel applications such as display enhancement through gaze-contingent rendering, saccadic endpoint prediction to minimize system latency, and gaze-based biometric user identification. The update rate of state-of-the-art mobile video oculography sensors is limited by system-level power consumption, which is mainly caused by the exponentially increasing computational power requirements for pupil detection in camera images with respect to the update rate. To overcome this limitation and enable unconstrained high-speed eye tracking with low power consumption, we propose to fuse eye movement velocity data acquired by laser feedback interferometry sensors with camera images acquired at a low sampling rate. We propose a model-based sensor fusion approach that involves a combination of a glint-free, model-based video-oculography approach and high-speed interpolation between successive camera images using velocity information derived from the laser feedback interferometry sensors to achieve an outstanding eye tracking sensor system update rate of 1 kHz. We evaluated the proposed hybrid sensor system in an experimental setup and achieved a gaze accuracy of 1.63°.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Johannes Meyer and Michael Mühlbauer "A hybrid high speed eye tracking sensor by fusion of video oculography and laser feedback interferometry", Proc. SPIE 12913, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR) V, 129130K (12 March 2024); https://doi.org/10.1117/12.2690814

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KEYWORDS

Sensors

Cameras

Eye

Eye tracking

Sensor fusion

Eye models

Distance measurement

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