DOI number:  10.1109/TVCG.2024.3372094

Affiliation of Author(s):  Tsinghua University, China

Journal:  IEEE Transactions on Visualization and Computer Graphics

Funded by:  National Key R&D Program (2023YFF0905104); NSFC (62132012); Tsinghua-Tencent Joint Lab

Key Words:  Redirected walking; Virtual reality; Rotation gain; Detection thresholds; Simulator sickness

Abstract:  Redirected walking (RDW) facilitates user navigation within expansive virtual spaces despite the constraints of limited physical spaces. It employs discrepancies between human visual-proprioceptive sensations, known as gains, to enable the remapping of virtual and physical environments. In this paper, we explore how to apply rotation gain while the user is walking. We propose to apply a rotation gain to let the user rotate by a different angle when reciprocating from a previous head rotation, to achieve the aim of steering the user to a desired direction. To apply the gains imperceptibly based on such a Bidirectional Rotation gain Difference (BiRD), we conduct both measurement and verification experiments on the detection thresholds of the rotation gain for reciprocating head rotations during walking. Unlike previous rotation gains which are measured when users are turning around in place (standing or sitting), BiRD is measured during users' walking. Our study offers a critical assessment of the acceptable range of rotational mapping differences for different rotational orientations across the user's walking experience, contributing to an effective tool for redirecting users in virtual environments.

Note:  Funding: National Key Research and Development Program of China (2023YFF0905104); National Natural Science Foundation of China (62132012); Beijing Municipal Science and Technology Program (Z221100007722001); Tsinghua-Tencent Joint Laboratory for Internet Innovation Technology; Royal Society Te Aparangi Marsden Fund (MFP-20-VUW-180)

Co-author:  Fiona Xiao Yu Chen,Ran Gong,Fang-Lue Zhang

First Author:  Sen-Zhe Xu

Indexed by:  Journal Article

Correspondence Author:  Song-Hai Zhang

Discipline:  Engineering

Document Type:  J

Volume:  30

Issue:  5

Page Number:  2693–2702

ISSN No.:  1077-2626

Translation or Not:  no

Links to published journals:  https://ieeexplore.ieee.org/document/10459053/