Virtual Reality

Virtual Reality (VR) typically uses head-mounted displays (HMDs) and head tracking to immerse the user in a simulated world.   Sights, sounds, and even touch are spatially located to provide the user with a convincing presentation of that world.   VR requires graphics to be generated for everything in the world - objects as well as background - making it difficult to maintain high fidelity over large areas.   Because of the totality and self-consistency of the virtual presentation, however, head tracking accuracy is not as critical as in Augmented reality (AR).

Head-Mounted VR System.   Head-mounted displays are inexpensive and provide intuitive viewing of the virtual world when coupled with head tracking.