Abstract
We describe a method of achieving redirected walking by modulating subjective translation and rotation. In a real space, a user walks around without leaving a 5 m2 area, but we have built a system that allows virtual movement around a larger area than the real space. This system is realized by translating and rotating the apparent ground in response to user movement.
Highlights
These days, with head-mounted displays (HMD) used in virtual reality (VR) becoming increasingly affordable, more people than ever can experience VR
The space to enjoy VR content can be limited. Idioms such as teleportation, where the user does not move in real space but moves from place to place in virtual space, are common in VR gameplay and experience
redirected walking (RDW) is a method of making a user feel as if they are moving in a vast world, even though they are moving in a limited physical space, by displaying imagery that is slightly different from the perspective of movement in real space
Summary
These days, with head-mounted displays (HMD) used in virtual reality (VR) becoming increasingly affordable, more people than ever can experience VR. The space to enjoy VR content (called “Guardian Space” by Oculus and “Chaperone” by SteamVR) can be limited Idioms such as teleportation, where the user does not move in real space but moves from place to place in virtual space, are common in VR gameplay and experience. Virtuix's Omni [3] and Cybershoes’ Cybershoes [4] products are available as locomotive interfaces for general VR content, allowing users to enjoy a walking VR experience Implementation of this method of walking is expensive and requires special equipment. It restricts the user’s activity because his or her body is fixed in place There is another method, called redirected walking (RDW), in which a user’s virtual movements are manipulated to create different subjective imagery than the “real” one so that the user does not notice that he or she is moving in a virtual space different from the real one. We realize RDW by manipulating the amount of relative movement and rotation by moving and rotating the subjective ground in virtual space
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