Design and implementation of a multi-person fish-tank virtual reality display

A mixed reality experience with a physical display, that situates 3D virtual content within the real world, has the potential to help people work and play with 3D information. However, almost all of such "fish tank virtual reality" (FTVR) systems have been isolated to a single-person experience, making them unsuitable for collaborative tasks. In this paper, we present a display system that allows two people to have unobstructed 3D perspective views into a spherical display while still being able to see and talk to one another. We evaluated the system through qualitative observation at a four-day exhibition and found it was effective for providing a convincing, shared 3D experience.