Eye tracking data quality and its understanding are paramount for the design and subsequent function to all applications that employ eye tracking signal, e.g., foveated rendering (eye movement prediction), interaction, etc.
In the report below we have evaluated, an HTC Vive headset retrofitted with an SMI eye tracking solution before SMI was bought by Apple. This evaluation was done with several classical and some new metrics. Data quality advertised by SMI, when the product was released, was as follows: spatial accuracy - 0.2 degrees of the visual angle, sampling rate - 250Hz. For a reference we have also provided results from Eyelink 1000 eye tracking which is considered to be a “golden standard” in academic eye tracking community, and several other eye trackers.
https://digital.library.txstate.edu/handle/10877/9006
While it is not possible to buy HTC Vive retrofitted by SMI anymore, I hope that the provided report can serve as an educational example and as a template of in-depth data quality evaluation of eye tracking hardware for people in our community.
—Oleg
Dr. Oleg Komogortsev
Professor
Texas State University
Department of Computer Science
601 University Drive
San Marcos, TX 78666-4616
Phone: (512) 245-0349
Email: [log in to unmask]<mailto:[log in to unmask]>
Webpage: http://www.cs.txstate.edu/~ok11
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