  We present a system for acquiring, processing, and rendering panoramic light
field still photography for display in Virtual Reality (VR). We acquire
spherical light field datasets with two novel light field camera rigs designed
for portable and efficient light field acquisition. We introduce a novel
real-time light field reconstruction algorithm that uses a per-view geometry
and a disk-based blending field. We also demonstrate how to use a light field
prefiltering operation to project from a high-quality offline reconstruction
model into our real-time model while suppressing artifacts. We introduce a
practical approach for compressing light fields by modifying the VP9 video
codec to provide high quality compression with real-time, random access
decompression.
  We combine these components into a complete light field system offering
convenient acquisition, compact file size, and high-quality rendering while
generating stereo views at 90Hz on commodity VR hardware. Using our system, we
built a freely available light field experience application called Welcome to
Light Fields featuring a library of panoramic light field stills for consumer
VR which has been downloaded over 15,000 times.
