VisuaLiftStudio: Using an Elevator as a Motion Platform by Modulating Perceived Direction with a Visual Illusion

Abstract

We present VisuaLiftStudio, a novel approach to establish a motion platform for a virtual reality setup that employs a general elevator. Using the elevator as the motion platform has several limitations, including distance and direction of movement. Our approach is to modulate perceived direction using a sensory illusion of motion induced by vision. Two laboratory experiments using a head-mounted display demonstrate that the perceived direction can be changed to not only the coaxial direction, but also the perpendicular direction of the elevator. Furthermore, we found that the intensity of subjective motion was not significantly changed, even while the direction of optical flow differed from that of the elevator. These results partially overcome the limitations, allowing development of virtual reality content inside the elevator. Finally, we built a prototype system of VisuaLiftStudio where the creator can access acceleration data and the control panel of the elevator. We introduce three virtual reality scenarios created in VisuaLiftStudio: 1) Virtual Cosmic Journey exhibits infinite elevation; 2) Virtual Freefall showcases the experience of accelerated descent; and 3) Virtual Sleigh Ride presents forward and backward movement.