High-resolution ultrafast eye tracking system

Andrew A. Kostrzewski; Anatoly A. Vasiliev; Dai Hyun Kim; Gajendra D. Savant

doi:10.1117/12.294517

12 December 1997 High-resolution ultrafast eye tracking system

Andrew A. Kostrzewski, Anatoly A. Vasiliev, Dai Hyun Kim, Gajendra D. Savant

Author Affiliations +

Proceedings Volume 3173, Ultrahigh- and High-Speed Photography and Image-based Motion Measurement; (1997) https://doi.org/10.1117/12.294517
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

This paper presents an eye tracking system that combines optical and electronic image processing for the precise measurement of eye movement parameters, including direction, speed, and acceleration. The system applies optical joint Fourier transform correlator and novelty filtering to measure the cross-correlation peak displacement caused by eye movements using magnified images of iris landmark patterns. This permits a 0.026 degree(s) accuracy of eye displacement measurements within a 6 degree(s) tracking range, or a 0.1 degree(s) accuracy within a 20 degree(s) range. Using digital micromirror device SLMs in the Fourier transform optical system, an inverse Fourier transform DSP module, and a high-speed digital camera, the eye tracking system will make it possible to detect and characterize saccadic intrusions in smooth pursuit eye movement.

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Andrew A. Kostrzewski, Anatoly A. Vasiliev, Dai Hyun Kim, and Gajendra D. Savant "High-resolution ultrafast eye tracking system", Proc. SPIE 3173, Ultrahigh- and High-Speed Photography and Image-based Motion Measurement, (12 December 1997); https://doi.org/10.1117/12.294517

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KEYWORDS

Eye

Fourier transforms

Ultrafast phenomena

Digital signal processing

Optical tracking

Image filtering

Image processing

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