- Underneath the optics
- Combined with the optics via a hot mirror (or an internal reflection)
- Inside the optics.
Wednesday, June 22, 2016
The Three (and a half) Configurations of Eye Trackers
Eye tracking could become a critical sensor in HMDs. In previous posts such as here, here and here we discussed some of the ways that eye trackers could be useful as input devices, as ways to reduce rendering load and more. But how are eye trackers installed inside an HMD? An appropriate placement of the eye tracking camera gives a quality image of the eye regardless of the gaze direction. If the eye image is bad, the tracking quality will be bad. It's truly a 'garbage in, garbage out' situation. The three typical ways to install a camera are: