Preliminary Environment Mapping for Redirected Walking

Hirt, Christian; Zank, Markus; Kunz, Andreas

doi:10.1109/vr.2018.8446262

Cited by 7 publications

(3 citation statements)

References 5 publications

(5 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Redirect walking can be utilized to provide dynamic safety boundaries for VR users. 10,11 Tao et al 12 use sensors to detect changes in the real-world environment and dynamically adjust the virtual environment, which does not reduce the immersive experience of VR users. Others provide new approaches to prevent object collision.…”

Section: User Safety In Vrmentioning

confidence: 99%

How to set safety boundary in virtual reality: A dynamic approach based on user motion prediction

Wang,

Che,

Chang

et al. 2023

Computer Animation & Virtual

View full text Add to dashboard Cite

Virtual reality (VR) interaction safety is a prerequisite for all user activities in the virtual environment. While seeking a deep sense of immersion with little concern about surrounding obstacles, users may have limited ability to perceive the real‐world space, resulting in possible collisions with real‐world objects. Nowadays, recent works and rendering techniques such as the Chaperone can provide safety boundaries to users but confines them in a small static space and lack of immediacy. To solve this problem, we propose a dynamic approach based on user motion prediction named SCARF, which uses Spearman's correlation analysis, rule learning, and few‐shot learning to achieve prediction of user movements in specific VR tasks. Specifically, we study the relationship between user characteristics, human motion, and categories of VR tasks and provides an approach that uses biomechanical analysis to define the interaction space in VR dynamically.We report on a user study with 58 volunteers and establish a three dimensional kinematic dataset from a VR game. The experiments validate that our few‐shot learning model is effective and can improve the performance of motion prediction. Finally, we implement SCARF in VR environment for dynamic safety boundary adjustment.

show abstract

Section: User Safety In Vrmentioning

confidence: 99%

How to set safety boundary in virtual reality: A dynamic approach based on user motion prediction

Wang,

Che,

Chang

et al. 2023

Computer Animation & Virtual

View full text Add to dashboard Cite

show abstract

“…Therefore, users can roam around in a large virtual environment in a small physical space combining with the. Hirtd et al [21] proposed an interactive mode combining the HMD stereo display with the SLAM visual recognition. SLAM generated a 3D model of the real environment, and transmitted it into the virtual scene in real-time.…”

Section: Related Workmentioning

confidence: 99%

A Natural Interaction Method of Multi-Sensory Channels for Virtual Assembly System of Power Transformer Control Cabinet

Shao

Feng

et al. 2020

IEEE Access

View full text Add to dashboard Cite

The more sensory channels are equipped in a virtual assembly system, the more real users feel in the whole system, however, most of the existing virtual assembly systems are based on the natural interaction method of one or two sensory channels. Thus, this paper proposes a novel virtual assembly system integrating multi-sensory channels, including gesture interaction, Chinese speech interaction, tactile interaction, 3D display and real-time display of real environment pictures in the virtual environment. To improve the operability of the virtual environment, we analyze the parallel virtual assembly sequence on the basis of two-hand interaction, and the assembly priority is prompted based on UI interface. For ease of operation, we present a method of viewpoint control based on gesture interaction and the coordinate threshold of spatial position. A hierarchical bounding box collision detection algorithm based on volume difference is proposed to improve the efficiency of collision feedback and collision avoidance. In addition, the power equipment models are exhibited in the virtual scene, as the exhibits of the virtual roaming process. Finally, to evaluate the training effect of this system, a comparative experiment is designed to compare the participants' experience and the effect of assembly training. The experimental results show that the virtual assembly system of natural interaction with multi-sensory channels is flexible and immersive. INDEX TERMS Virtual assembly, natural interaction, virtual reality, multisensory channel. I. INTRODUCTION

show abstract

“…The Ransac algorithm (Fischler and Bolles, 1981) is then used to find the line and the boundaries. Another work by Hirt et al (2018b) allows having dynamic objects in the space by creating an occupancy map in the grid.…”

Section: Introductionmentioning

confidence: 99%

Redirected walking for exploration of unknown environments

Lutfallah,

Ketzel,

Kunz

2024

Front. Virtual Real.

View full text Add to dashboard Cite

Real walking is the most natural locomotion method for exploring Virtual Environments (VE), enhancing the immersion of Virtual Reality (VR). Redirected Walking (RDW) is employed to enable real walking within limited tracking spaces in large VEs by subtly manipulating the mapping between the virtual and real environments. However, the effectiveness of RDW is greatly influenced by the convex shape and size of the manually defined physical tracking space, subsequently impacting the user’s immersive experience. To improve performance, one strategy is to integrate exploration methods from mobile robotics with RDW. This will expand the usable tracking space, facilitating dynamic environments and rapid exploration. For this, we adapted a Unity framework for an RDW algorithm to facilitate simulations for such an exploration. We conducted a simulation with artificially created non-convex explorable tracking spaces and pre-recorded path elements, simulating two adapted RDW artificial potential field (APF) concepts. Three conceptualized modes were applied: repulsive APF, exploration APF, and exploration APF with a distance threshold. Additionally, one APF was extended with a frontier-based exploration approach that utilized the path between the user’s position and a targeted frontier. The analysis revealed a significant trade-off between exploration and immersion. APF combined with frontier-based the exploration technique showed the fastest exploration speed, but - however - resulted in the lowest distance between resets.

show abstract

Preliminary Environment Mapping for Redirected Walking

Cited by 7 publications

References 5 publications

How to set safety boundary in virtual reality: A dynamic approach based on user motion prediction

How to set safety boundary in virtual reality: A dynamic approach based on user motion prediction

A Natural Interaction Method of Multi-Sensory Channels for Virtual Assembly System of Power Transformer Control Cabinet

Redirected walking for exploration of unknown environments

Contact Info

Product

Resources

About