scholarly journals An information centric framework for creating virtual environments to support micro surgery

2016 ◽  
Vol 15 (2) ◽  
pp. 3-17 ◽  
Author(s):  
J. Cecil ◽  
Miguel Pirela-Cruz
Keyword(s):  
Virtual Reality ◽  
Virtual Environments ◽  
Virtual Environment ◽  
Information Model ◽  
Enterprise Modeling ◽  
Modeling Language ◽  
Virtual Reality Environment ◽  
Enterprise Level ◽  
Micro Surgery ◽  
Engineering Enterprise

In this paper we discuss the creation of an information centric framework to develop a virtual reality environment for micro surgery. An information model of micro surgery was built through interactions with an expert micro surgeon using the engineering Enterprise Modeling Language (eEML). The overall approach and architecture of the micro surgical environment is discussed. An enterprise level surgical manager, surgical planner and other components work together to enable the functioning of the virtual environment for micro surgery. Such virtual environments are essential to educating / training young budding surgeons..

scholarly journals An Information Model Based Framework for Virtual Micro Surgery

2011 ◽  
Vol 10 (2) ◽  
pp. 17-31 ◽  
Author(s):  
Joe Cecil ◽  
Miguel Pirela-Cruz
Keyword(s):  
Virtual Reality ◽  
Virtual Environment ◽  
Information Model ◽  
Modeling Language ◽  
Virtual Reality Environment ◽  
Surgical Residents ◽  
Enterprise Level ◽  
The Creation ◽  
Micro Surgery ◽  
Safety Considerations

In this paper we discuss the creation of a virtual reality environment for micro surgery. An information model was developed and used as the basis to understand the complex domain of micro surgery. An information model using a modeling language is used to propel the various simulation activities in the virtual environment. An enterprise level surgical manager, surgical planner and other components work together to enable the functioning of the virtual environment for micro surgery. The creation of a virtual surgical environment will enable surgical residents to learn the appropriate way of managing various conditions with safety considerations to the residents (students) and patients.

scholarly journals A Comparative Study of Sense of Presence of Virtual Reality and Immersive Environments

2016 ◽  
Vol 20 ◽  
Author(s):  
Max M. North ◽  
Sarah M. North
Keyword(s):  
Virtual Reality ◽  
Virtual Environments ◽  
Virtual Environment ◽  
Head Tracking ◽  
Virtual Reality Environment ◽  
Sense Of Presence ◽  
Significant Difference ◽  
Environment Simulation ◽  
Immersive Environment ◽  
Tracking Device

The study of sense of presence experienced in virtual reality environments has become an important area of research. The continued advancement of immersive technology offers more opportunities to examine how a subject becomes immersed in and interacts with a variety of virtual environments. The primary purpose of this research is to study the sense of presence while interacting with a traditional Virtual Reality Environment (Helmet-based system with a Head-tracking device) and compare it with a virtual reality environment using an Immersive Environment (Spherical-based Visualization environment). Two empirical experiments were investigated in this study, each consisting of thirty-five subjects. A virtual airplane scenario was created and simulated for the participants of both environments. Participants were given several questionnaires after completing the simulation. This study mainly focused on question 9 and 10 of that survey, which dealt with how much the participant felt present in the virtual environment, and if the presence of the real world could still be experienced while in the virtual environment. We found that the subjects felt more involved with the virtual environment while using the Immersive Environment simulation versus using the traditional helmet-based Virtual Reality Environment. There was a statistically significant difference in questions 9 and 10 between the Immersive Environment and traditional Virtual Reality Environment when those questions are considered in isolation. However there was not a significant difference in the total sense of presence between the two environments after analyzing the questions together. The primary differences between the questions were analyzed using the overall mean and the standard deviation. The Immersive Environment has a smaller deviation than the traditional Virtual Reality Environment, implying that the sense of presence response is more concentrated. However, the overall results demonstrate that both environments are almost equally effective, with the Immersive Environment having several slight advantages.

Me and My VE, Part 5: Applications in Human Factors Research and Practice

2018 ◽  
Vol 62 (1) ◽  
pp. 2051-2055
Author(s):  
Randall Spain ◽  
Benjamin Goldberg ◽  
Jeffrey Hansberger ◽  
Tami Griffith ◽  
Jeremy Flynn ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Human Factors ◽  
Virtual Environments ◽  
Virtual Environment ◽  
Human Performance ◽  
Mixed Reality ◽  
Research Training ◽  
Research And Practice ◽  
Set Up ◽  
Human Factors Research

Recent advances in technology have made virtual environments, virtual reality, augmented reality, and simulations more affordable and accessible to researchers, companies, and the general public, which has led to many novel use cases and applications. A key objective of human factors research and practice is determining how these technology-rich applications can be designed and applied to improve human performance across a variety of contexts. This session will demonstrate some of the distinct and diverse uses of virtual environments and mixed reality environments in an alternative format. The session will begin with each demonstrator providing a brief overview of their virtual environment (VE) and a description of how it has been used to address a particular problem or research need. Following the description portion of the session, each VE will be set-up at a demonstration station in the room, and session attendees will be encouraged to directly interact with the virtual environment and ask demonstrators questions about their research and inquire about the effectiveness of using VE for research, training, and evaluation purposes. The overall objective of this alternative session is to increase the awareness of how human factors professionals use VE technologies and increase the awareness of the capabilities and limitations of VE in supporting the work of HF professionals.

scholarly journals VIRTUAL REALITY SIMULATION AS THERAPY FOR POSTTRAUMATIC STRESS DISORDER (PTSD)

2019 ◽  
Vol 01 (01) ◽  
pp. 24-34 ◽  
Author(s):  
Smys S ◽  
Jennifer S. Raj ◽  
Krishna raj N.
Keyword(s):  
Posttraumatic Stress Disorder ◽  
Sexual Abuse ◽  
Virtual Reality ◽  
Virtual Environments ◽  
Virtual Environment ◽  
Stress Disorder ◽  
Raspberry Pi ◽  
Virtual Reality Simulation ◽  
Motion Platform ◽  
Person Experience

Virtual reality (VR) technology has the potential to make a person experience anything, anytime, anywhere. It has the ability to influence the human brain that it assumes to be present somewhere that it is really not. In this paper, we exploit this application of the VR technology to simulate virtual environments that can help with PTSD therapy for people affected by trauma due to accident, war, sexual abuse and so on. Several sensors are used to gather the user movements on a motion platform and replicate it in the virtual environment with the help of a Raspberry Pi board and Unreal Developer’s kit. It has flexible interfaces that the clinician can modify the virtual environment according to the requirement for the patient.

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 .

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.

Cosmic Worm in the CAVE: Steering a High-Performance Computing Application from a Virtual Environment

1995 ◽  
Vol 4 (2) ◽  
pp. 121-129 ◽  
Author(s):  
Trina M. Roy ◽  
Carolina Cruz-Neira ◽  
Thomas A. DeFanti
Keyword(s):  
Virtual Reality ◽  
Virtual Environment ◽  
Distributed System ◽  
High Performance ◽  
Research Subject ◽  
Virtual Reality Environment ◽  
Scientific Application ◽  
Design And Implementation ◽  
Scientific Simulations ◽  
Performance Computing

Developing graphic interfaces to steer high-performance scientific computations has been a research subject in recent years. Now, computational scientists are starting to use virtual reality environments to explore the results of their simulations. In most cases, the virtual reality environment acts on precomputed data; however, the use of virtual reality environments for the dynamic steering of distributed scientific simulations is a growing area of research. We present in this paper the initial design and implementation of a distributed system that uses our virtual reality environment, the CAVE, to control and steer scientific simulations being computed on remote supercomputers. We discuss some of the more relevant features of virtual reality interfaces, emphasizing those of the CAVE, describe the distributed system developed, and present a scientific application, the Cosmic Worm, that makes extensive use of the distributed system.

Influence of Physical Characteristics of Routes on Distance Cognition in Virtual Environments

2005 ◽  
Vol 32 (5) ◽  
pp. 777-785 ◽  
Author(s):  
Ebru Cubukcu ◽  
Jack L Nasar
Keyword(s):  
Virtual Reality ◽  
Virtual Environments ◽  
Virtual Environment ◽  
Real World ◽  
Three Dimensional ◽  
Spatial Behavior ◽  
Self Report ◽  
Parking Garage ◽  
The Real ◽  
Predicting Behavior

Discrepanices between perceived and actual distance may affect people's spatial behavior. In a previous study Nasar, using self report of behavior, found that segmentation (measured through the number of buildings) along the route affected choice of parking garage and path from the parking garage to a destination. We recreated that same environment in a three-dimensional virtual environment and conducted a test to see whether the same factors emerged under these more controlled conditions and to see whether spatial behavior in the virtual environment accurately reflected behavior in the real environment. The results confirmed similar patterns of response in the virtual and real environments. This supports the use of virtual reality as a tool for predicting behavior in the real world and confirms increases in segmentation as related to increases in perceived distance.

Social Interaction and Social Development in Virtual Environments

1993 ◽  
Vol 2 (2) ◽  
pp. 153-161 ◽  
Author(s):  
Valerie E. Stone
Keyword(s):  
Virtual Reality ◽  
Social Skills ◽  
Social Interaction ◽  
Social Development ◽  
Children And Adolescents ◽  
Virtual Environments ◽  
Virtual Environment ◽  
New Technologies ◽  
The Subject

Like most new technologies, virtual reality (VR) has been the subject of a great deal of idealization. This paper both debunks that idealization by discussing some problems that certain types of VR could cause and emphasizes how other types of VR could bring the technology closer to its ideal. Virtual reality is divided into four types: social (there are real other people to interact with), nonsocial (other interactants are simulations of people), creative (users can create elements in the virtual environment), and noncreative (users interact with a fixed environment created for them). Nonsocial VR may cause problems by making it difficult for children and adolescents to learn social skills. Noncreative VR is problematic because it places limits on users' creativity and freedom. Engineers developing VR technology are encouraged to develop social and creative VR.

scholarly journals Discretionary Access Controls for a Collaborative Virtual Environment

2010 ◽  
Vol 9 (1) ◽  
pp. 61-71 ◽  
Author(s):  
Timothy Wright ◽  
Greg Madey
Keyword(s):  
Virtual Reality ◽  
Access Control ◽  
Virtual Environments ◽  
Virtual Environment ◽  
Collaborative Virtual Environments ◽  
Collaborative Virtual Environment ◽  
Discretionary Access Control ◽  
Limited Access ◽  
Access Controls ◽  
Restrict Movement

As collaborative virtual environments (CVEs) are more widely used, participant access to CVE objects and information becomes a significant concern. In virtual reality games, storefronts, classrooms, and laboratories, for example, the need to control access to spaces and objects is integral to the security of activities taking place there. However, limited access controls are typically available in CVEs. Often, such controls are course-grained, only protecting against movements by unauthorized participants into specific areas. In answer to this deficiency, we offer a discretionary access control (DAC) system based on traditional concepts of users and groups, and tailored to the needs of a CVE. Our system, called WonderDAC, includes the ability to restrict movement into areas, as well as control interactions with objects. A basic WonderDAC prototype has been implemented within the Project Wonderland CVE.

Sign in / Sign up

Export Citation Format

Share Document