[claytongulick]

I did a fun project a few years ago with eye tracking.

We built a prototype for roadside sobriety checks. The idea was to take race/subjectivity out of the equation in these traffic stops.

We modified an oculus quest and added IR LEDs and cameras with small PI zero's. I wrote software for the quest that gave instructions and had a series of examinations where you'd follow a 3D ball, the screen would brighten and darken, and several others while I looked for eye jerks (saccades) and pupil dilation. The officer was able to see your pupil (enlarged) on a laptop in real time and we'd mark suspicious times on the video timeline for review.

It was an interesting combination of video decoding, OpenCV and real-time streams with a pretty slick UI. The Pi Zero was easily capable of handling real-time video stream decoding, OpenCV and Node. Where I ran into performance problems I wrote node -> c++ bindings.

We did it all on something silly like a 50k budget. Neat project.