scholarly journals Augmented rotations in virtual reality for users with a reduced range of head movement

2019 ◽  
Vol 6 ◽  
pp. 205566831984130
Author(s):  
Nahal Norouzi ◽  
Luke Bölling ◽  
Gerd Bruder ◽  
Greg Welch
Keyword(s):  
Virtual Reality ◽  
Virtual Environment ◽  
User Interfaces ◽  
Head Movement ◽  
Large Body ◽  
Virtual Space ◽  
Eye Tracker ◽  
Body Movements ◽  
Head Tracker ◽  
Head Rotations

Introduction: A large body of research in the field of virtual reality is focused on making user interfaces more natural and intuitive by leveraging natural body movements to explore a virtual environment. For example, head-tracked user interfaces allow users to naturally look around a virtual space by moving their head. However, such approaches may not be appropriate for users with temporary or permanent limitations of their head movement. Methods: In this paper, we present techniques that allow these users to get virtual benefits from a reduced range of physical movements. Specifically, we describe two techniques that augment virtual rotations relative to physical movement thresholds. Results: We describe how each of the two techniques can be implemented with either a head tracker or an eye tracker, e.g. in cases when no physical head rotations are possible. Conclusions: We discuss their differences and limitations and we provide guidelines for the practical use of such augmented user interfaces.

scholarly journals Rear-Seat Productivity in Virtual Reality: Investigating VR Interaction in the Confined Space of a Car

2021 ◽  
Vol 5 (4) ◽  
pp. 15
Author(s):  
Jingyi Li ◽  
Ceenu George ◽  
Andrea Ngao ◽  
Kai Holländer ◽  
Stefan Mayer ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Virtual Environment ◽  
Physical Space ◽  
Rear Seat ◽  
Virtual Space ◽  
Future Research ◽  
Confined Space ◽  
Physical Restraints ◽  
Working Environments ◽  
Research And Design

Ubiquitous technology lets us work in flexible and decentralised ways. Passengers can already use travel time to be productive, and we envision even better performance and experience in vehicles with emerging technologies, such as virtual reality (VR) headsets. However, the confined physical space constrains interactions while the virtual space may be conceptually borderless. We therefore conducted a VR study (N = 33) to examine the influence of physical restraints and virtual working environments on performance, presence, and the feeling of safety. Our findings show that virtual borders make passengers touch the car interior less, while performance and presence are comparable across conditions. Although passengers prefer a secluded and unlimited virtual environment (nature), they are more productive in a shared and limited one (office). We further discuss choices for virtual borders and environments, social experience, and safety responsiveness. Our work highlights opportunities and challenges for future research and design of rear-seat VR interaction.

Virtual Reality (VR) in Pediatrics: Innovative Perspectives With Special Reference To Clinical Applications and Pediatric Rehabilitation

2021 ◽  
Author(s):  
Stefan Bittmann
Keyword(s):  
Virtual Reality ◽  
Virtual Environment ◽  
Virtual Worlds ◽  
Virtual World ◽  
Mixed Reality ◽  
Clinical Applications ◽  
Virtual Space ◽  
Data Glove ◽  
Input Devices ◽  
Head Mounted Displays

Virtual reality (VR) is the term used to describe representation and perception in a computer-generated, virtual environment. The term was coined by author Damien Broderick in his 1982 novel “The Judas Mandala". The term "Mixed Reality" describes the mixing of virtual reality with pure reality. The term "hyper-reality" is also used. Immersion plays a major role here. Immersion describes the embedding of the user in the virtual world. A virtual world is considered plausible if the interaction is logical in itself. This interactivity creates the illusion that what seems to be happening is actually happening. A common problem with VR is "motion sickness." To create a sense of immersion, special output devices are needed to display virtual worlds. Here, "head-mounted displays", CAVE and shutter glasses are mainly used. Input devices are needed for interaction: 3D mouse, data glove, flystick as well as the omnidirectional treadmill, with which walking in virtual space is controlled by real walking movements, play a role here.

scholarly journals Virtual Reality and Assistive Technologies: A Survey

2018 ◽  
Vol 18 (2) ◽  
pp. 30-57
Author(s):  
Shamima Yasmin
Keyword(s):  
Virtual Reality ◽  
Virtual Environments ◽  
Virtual Environment ◽  
Assistive Technologies ◽  
Sensory Substitution ◽  
Body Movements ◽  
Rehabilitation Therapy ◽  
Extensive Survey ◽  
Different Types ◽  
Mental Exercise

This paper conducts an extensive survey on existing Virtual Reality (VR)-based rehabilitation approaches in the context of different types of impairments: mobility, cognitive, and visual. Some VR-based assistive technologies involve repetitions of body movements, some require persistent mental exercise, while some work as sensory substitution systems. A multi-modal VR-based environment can incorporate a number of senses, (i.e., visual, auditory, or haptic) into the system and can be an immense source of motivation and engagement in comparison with traditional rehabilitation therapy. This survey categorizes virtual environments on the basis of different available modalities. Each category is again subcategorized by the types of impairments while introducing available devices and interfaces. Before concluding the survey, the paper also briefly focuses on some issues with existing VR-based approaches that need to be optimized to exploit the utmost benefit of virtual environment-based rehabilitation systems .

A Framework for Designing Component Shapes in a Virtual Reality Environment

1997 ◽  
Author(s):  
Tushar H. Dani ◽  
Rajit Gadh
Keyword(s):  
Virtual Reality ◽  
Virtual Environment ◽  
User Interfaces ◽  
Computer Aided Design ◽  
Three Dimensional ◽  
Human Interaction ◽  
Prototype System ◽  
Virtual Design ◽  
Cad System ◽  
Interactive Editing

Abstract Despite advances in Computer-Aided Design (CAD) and the evolution of the graphical user interfaces, rapid creation, editing and visualization of three-dimensional (3D) shapes remains a tedious task. Though the availability of Virtual Reality (VR)-based systems allows enhanced three-dimensional interaction and visualization, the use of VR for ab initio shape design, as opposed to ‘importing’ models from existing CAD systems, is a relatively new area of research. Of interest are computer-human interaction issues and the design and geometric tools for shape modeling in a Virtual Environment (VE). The focus of this paper is on the latter i.e. in defining the geometric tools required for a VR-CAD system and in describing a framework that meets those requirements. This framework, the Virtual Design Software Framework (VDSF) consists of the interaction and design tools, and an underlying geometric engine that provides the representation and algorithms required by these tools. The geometric engine called the Virtual Modeler uses a graph-based representation (Shape-Graph) for modeling the shapes created by the user. The Shape-Graph facilitates interactive editing by localizing the effect of editing operations and in addition provides constraint-based design and editing mechanisms that are useful in a 3D interactive virtual environment. The paper concludes with a description of the prototype system, called the Virtual Design Studio (VDS), that is currently being implemented.1.

Visiting Tourist Landmarks in Virtual Reality Systems by Real-Walking

2010 ◽  
pp. 180-193 ◽  
Author(s):  
F. Steinicke ◽  
G. Bruder ◽  
J. Jerald ◽  
H. Frenz
Keyword(s):  
Virtual Reality ◽  
Virtual Environments ◽  
Virtual Environment ◽  
User Interfaces ◽  
Large Scale ◽  
Three Dimensional ◽  
Interaction Space ◽  
Immersive Virtual Environments ◽  
Redirected Walking ◽  
Virtual City

In recent years virtual environments (VEs) have become more and more popular and widespread due to the requirements of numerous application areas in particular in the 3D city visualization domain. Virtual reality (VR) systems, which make use of tracking technologies and stereoscopic projections of three-dimensional synthetic worlds, support better exploration of complex datasets. However, due to the limited interaction space usually provided by the range of the tracking sensors, users can explore only a portion of the virtual environment (VE). Redirected walking allows users to walk through large-scale immersive virtual environments (IVEs) such as virtual city models, while physically remaining in a reasonably small workspace by intentionally injecting scene motion into the IVE. With redirected walking users are guided on physical paths that may differ from the paths they perceive in the virtual world. The authors have conducted experiments in order to quantify how much humans can unknowingly be redirected. In this chapter they present the results of this study and the implications for virtual locomotion user interfaces that allow users to view arbitrary real world locations, before the users actually travel there in a natural environment.

Non-Verbal Communication Language in Virtual Worlds

2021 ◽  
pp. 394-415
Author(s):  
Ivonne Citarella
Keyword(s):  
Virtual Reality ◽  
Virtual Environment ◽  
Virtual Worlds ◽  
Second Life ◽  
Verbal Communication ◽  
Virtual Space ◽  
Communication Process ◽  
Conscious Choice

Over the years, the virtual space has been changing, and the skills acquired by users have been improved, and the avatars, as well as the settings, have graphically become more and more sophisticated. In virtual reality, the avatar without an appropriate animation would move in jerks in a disharmonious way similar to a robot, but endowing it with a particular postural animation, you make a conscious choice of what information you want to transfer with its appearance and its posture. In recent years, research has focused on the study of communication and its importance. The purpose of this contribution is to analyze the animations present in Second Life trying to trace a socio-psychological picture of the non-verbal communication process in a virtual environment.

scholarly journals Virtual Reality and Situated Experiential Education A conceptualisation and exploratory trial

2020 ◽  
Author(s):  
Christian Schott ◽  
Stephen Marshall
Keyword(s):  
Virtual Reality ◽  
Virtual Environment ◽  
Learning Environments ◽  
Experiential Education ◽  
Real World ◽  
Virtual Space ◽  
Immersive Environments ◽  
Education Environment ◽  
The Impact ◽  
Large Groups

<p>Virtual reality is widely recognised as offering the potential for fully immersive environments. This paper describes a framework that guides the creation and analysis of immersive environments that are pedagogically structured to support situated and experiential education. The “situated experiential education environment” framework described in this paper is used to examine the impact that a virtual environment can have on the user experience of participants in a virtual space. The analysis of a virtual environment implemented to support learner exploration of issues of tourism development and the related impacts suggests that this type of experience is capable of providing participants with a holistic experience of real world environments that are otherwise too expensive, impractical or unethical for large groups of people to visit in person. The pedagogical value of such experiences is enabled through immersion in a reality-based environment, engagement with complex and ambiguous situations and information, and interaction with the space, other students and teachers. The results demonstrate that complex immersive learning environments are readily achievable but that high levels of interactivity remains a challenge.</p>

scholarly journals Simulation of Cosmonaut Rescue Using Virtual Reality

2021 ◽  
Author(s):  
Mikhail Mikhaylyuk ◽  
Andrey Maltsev ◽  
Evgeny Strashnov
Keyword(s):  
Virtual Reality ◽  
Virtual Environment ◽  
Space Station ◽  
Three Dimensional ◽  
Virtual Space ◽  
Control Panel ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Movement Synchronization ◽  
Complex Methods

This paper presents original solutions for creation of training complex learning cosmonauts to control a space jet pack on purpose self-rescue when emergency happens. An approach is proposed in which training is carried out in a virtual environment using virtual reality gloves and headset. The idea is that control of virtual space jet pack model is performed by interaction of virtual hands, copying movements of cosmonaut's hands, with three-dimensional model of jet pack's control panel. To implement the training complex, methods and approaches were developed for movement synchronization simulation of virtual and real hands, as well as simulation of jet pack's control panel and thrusters. Approbation of proposed methods and approaches was carried out as part of our virtual environment system VirSim developed at the SRISA RAS. Results obtained in the paper can be used to create training complex for learning cosmonauts to rescue when they accidentally separate from the International Space Station.

scholarly journals Preprint: Embodiment of approach-avoidance behavior

2019 ◽  
Author(s):  
Andreas B Eder ◽  
Anand Krishna ◽  
Albrecht Sebald ◽  
Wilfried Kunde
Keyword(s):  
Virtual Reality ◽  
Virtual Environment ◽  
Avoidance Behavior ◽  
Whole Body ◽  
Body Movements ◽  
Avoidance Motivation ◽  
Aversive Stimuli ◽  
Approach Avoidance

Previous studies showed that humans can flexibly reconfigure manual reactions to motivational stimuli in order to produce compatible changes in visual environments (i.e., approach appetitive and avoid aversive stimuli). Using a virtual reality headset, we examined whether analogous flexibility is observed with whole-body movements in forward and backward directions that produced (non-)corresponding visual movements in a virtual environment. Two experiments showed that forward movements were initiated faster in response to a (pleasant) flower and backward movements in response to an (unpleasant) spider, even when the movements resulted in reverse visual motions towards the spider and away from the flower. In contrast, visual motions were more important when these motions were controlled manually and after strategic preparation of producing body steps. Overall, results suggest that there is a highly overlearned connection between locomotion and approach/avoidance that is difficult to override. Implications in regard to the embodiment of approach-avoidance motivation are discussed.

scholarly journals A Pseudo-Immersive Virtual Environment - a Shell for Research

1996 ◽  
Vol 2 (3) ◽  
pp. 1-14
Author(s):  
Jing-Jing Fang ◽  
Douglas E.R. Clark ◽  
John E. L. Simmons
Keyword(s):  
Virtual Reality ◽  
Virtual Environment ◽  
Dimensional Space ◽  
Research Work ◽  
Three Dimensional ◽  
Virtual Space ◽  
Mechanical Assembly ◽  
Software Interface ◽  
Immersive Virtual Environment ◽  
Three Dimensional Space

The authors built a pseudo-immersive three-dimensional computer generated virtual environment (VE) as a shell for research in detailed collision detection. The purpose of the virtual world construction described in this paper is to handle engineering applications such as the mechanical assembly and disassembly of complex systems. A virtual space ball is attached to the VE in order to control the motion of virtual objects in that environment. This software interface simulates a real three-dimensional space ball device. The contribution of the pseudo-immersive system removes the absolute necessity for expensive Virtual Reality equipment and software for research work on virtual reality.

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