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26 February 2024 High-speed lensless eye tracker for microsaccade measurement
Taeyoung Kim, Kyung Chul Lee, Kyungwon Lee, Nakkyu Baek, Jaewoo Jung, Eosu Kim, Bobae Park, Junghee Ha, Keun You Kim, Young-Seok Seo, Seung Ah Lee
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Proceedings Volume 13076, SPIE Advanced Biophotonics Conference (SPIE ABC 2023); 1307609 (2024) https://doi.org/10.1117/12.3017964
Event: SPIE Advanced Biophotonics Conference (SPIE ABC 2023), 2023, Jeju, Korea, Republic of
Abstract
We report on the design and construction of a goggle-type eye tracker using a low-cost and high-speed lensless camera for monitoring eye movements in neurodegenerative diseases. A Rolling Shutter image sensor combined with lensless computational imaging allows for the reconstruction of a time sequence of images from a single snapshot, effectively improving the framerate of the camera. We constructed and demonstrated the prototype device using a commercial-grade CMOS image sensor and achieved the improvement of framerate from 15 to 480Hz, with the tracking results for 28 clinical measured data. Our device can potentially measure microsaccadic eye movements in a wearable camera format, allowing routine monitoring of abnormal eye movements for the early diagnosis and tracking of Alzheimer’s and Parkinson’s disease.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Taeyoung Kim, Kyung Chul Lee, Kyungwon Lee, Nakkyu Baek, Jaewoo Jung, Eosu Kim, Bobae Park, Junghee Ha, Keun You Kim, Young-Seok Seo, and Seung Ah Lee "High-speed lensless eye tracker for microsaccade measurement", Proc. SPIE 13076, SPIE Advanced Biophotonics Conference (SPIE ABC 2023), 1307609 (26 February 2024); https://doi.org/10.1117/12.3017964
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KEYWORDS
Eye
Eye tracking
Image sensors
Cameras
Point spread functions
Image restoration
Reflection
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