A digital dual Purkinje image (dDPI) eye tracking plugin for the open source eye tracking framework, OpenIris. OpenIrisDPI was developed by Ryan Ressmeyer in the Horwitz lab at the University of Washington and Yates lab at the University of California Berkeley. It is capable of tracking the first and fourth Purkinje reflections at 500 Hz running on modern CPUs and can achieve sub-arcminute precision with proper optical configuration. Check out the wiki for documentation on how to build and operate a dDPI system using OpenIrisDPI. Related materials can be downloaded on our Google Drive folder.
