This Is How Valveâ€™s Amazing Lighthouse Tracking Technology Works
J Thoendell stashed this in Oculus
Ready for the genius part? When a flash occurs, the headset simply starts counting (like a stopwatch) until it â€śseesâ€ť which one of its photosensors gets hit by a laser beamâ€”and uses the relationship betweenÂ whereÂ that photosensor exists on the headset, andÂ whenÂ the beam hit the photosensor, to mathematically calculate its exact position relative to the base stations in the room.
Hit enough of those photosensors with a laser at the same time, and they form a â€śposeâ€ť â€” a 3D shape that not only lets you know where the headset is, but the direction itâ€™s facing, too!
Again, no optical tracking required. Itâ€™sÂ allÂ about timing.Â
The result is cheap, accurate positional tracking. A bit high-level and wordy, I know, but itâ€™s pretty awesomeâ€”Lighthouse isÂ soÂ accurate that jugglers can virtually toss and catch multiple objects under their legs and behind their back.Â
Stashed in: Virtual Reality!