The Light Field Stereoscope Immersive Computer Graphics via Factored Near-Eye Light Field Displays with Focus Cues

摘要

Over the last few years, virtual reality (VR) has re-emerged as arntechnology that is now feasible at low cost via inexpensive cellphonerncomponents. In particular, advances of high-resolution microrndisplays, low-latency orientation trackers, and modern GPUsrnfacilitate immersive experiences at low cost. One of the remainingrnchallenges to further improve visual comfort in VR experiences isrnthe vergence-accommodation conflict inherent to all stereoscopicrndisplays. Accurate reproduction of all depth cues is crucial for visualrncomfort. By combining well-known stereoscopic display principlesrnwith emerging factored light field technology, we present thernfirst wearable VR display supporting high image resolution as wellrnas focus cues. A light field is presented to each eye, which providesrnmore natural viewing experiences than conventional near-eyerndisplays. Since the eye box is just slightly larger than the pupilrnsize, rank-1 light field factorizations are sufficient to produce correctrnor nearly-correct focus cues; no time-multiplexed image displayrnor gaze tracking is required. We analyze lens distortions in 4D lightrnfield space and correct them using the afforded high-dimensionalrnimage formation. We also demonstrate significant improvementsrnin resolution and retinal blur quality over related near-eye displays.rnFinally, we analyze diffraction limits of these types of displays.