High resolution ultra-fast eye tracking system

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 degrees accuracy of eye displacement measurements within a 6 degrees tracking range, or a 0.1 degrees accuracy within a 20 degrees 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.