scholarly journals Would Gaze-Contingent Rendering Improve Depth Perception in Virtual and Augmented Reality?

2019 ◽  
Author(s):  
Paul Linton
Keyword(s):  
Virtual Reality ◽  
Augmented Reality ◽  
Depth Perception ◽  
Physical Distance ◽  
Virtual Objects ◽  
Optical Distance ◽  
Head Mounted Displays ◽  
Virtual And Augmented Reality ◽  
Perspective Distortions ◽  
The Impact

Near distances are overestimated in virtual reality, and far distances are underestimated, but an explanation for these distortions remains elusive. One potential concern is that whilst the eye rotates to look at the virtual scene, the virtual cameras remain static. Could using eye-tracking to change the perspective of the virtual cameras as the eye rotates improve depth perception in virtual reality? This paper identifies 14 distinct perspective distortions that could in theory occur from keeping the virtual cameras fixed whilst the eye rotates in the context of near-eye displays. However, the impact of eye movements on the displayed image depends on the optical, rather than physical, distance of the display. Since the optical distance of most head-mounted displays is over 1m, most of these distortions will have only a negligible effect. The exception are ‘gaze-contingent disparities’, which will leave near virtual objects looking displaced from physical objects that are meant to be at the same distance in augmented reality.

scholarly journals Impact of virtual and augmented reality on theme parks

2021 ◽  
Author(s):  
Trevor Nelson
Keyword(s):  
Virtual Reality ◽  
Augmented Reality ◽  
Mixed Reality ◽  
Business Case ◽  
Theme Park ◽  
Theme Parks ◽  
Head Mounted Displays ◽  
Virtual And Augmented Reality ◽  
Physical Spaces ◽  
The Impact

Virtual Reality (VR) and Augmented Reality (AR), provide immersive experiences that are increasingly considered for implementation within Theme Parks. This paper seeks to determine the impact of virtual technologies on the Theme Parks. The method for this paper involved interviews with industry leading experts from the Theme Park industry. The interviews were structured to determine more detailed information on how they are approaching VR/AR in Theme Park attractions. Theme Parks need to provide guests with something they can’t get at home. There are many challenges with head mounted displays (HMD) in Theme Parks, as a result, several participants pointed to Mixed Reality (MR) as a better current solution. It mixes physical spaces with digital overlays with less complicated and operationally challenging technology. New attractions using VR/AR/MR technologies need to carefully consider what content they will use, mechanics of the experience and the business case to ultimately achieve overall success.

scholarly journals Impact of virtual and augmented reality on theme parks

2021 ◽  
Author(s):  
Trevor Nelson
Keyword(s):  
Virtual Reality ◽  
Augmented Reality ◽  
Mixed Reality ◽  
Business Case ◽  
Theme Park ◽  
Theme Parks ◽  
Head Mounted Displays ◽  
Virtual And Augmented Reality ◽  
Physical Spaces ◽  
The Impact

Virtual Reality (VR) and Augmented Reality (AR), provide immersive experiences that are increasingly considered for implementation within Theme Parks. This paper seeks to determine the impact of virtual technologies on the Theme Parks. The method for this paper involved interviews with industry leading experts from the Theme Park industry. The interviews were structured to determine more detailed information on how they are approaching VR/AR in Theme Park attractions. Theme Parks need to provide guests with something they can’t get at home. There are many challenges with head mounted displays (HMD) in Theme Parks, as a result, several participants pointed to Mixed Reality (MR) as a better current solution. It mixes physical spaces with digital overlays with less complicated and operationally challenging technology. New attractions using VR/AR/MR technologies need to carefully consider what content they will use, mechanics of the experience and the business case to ultimately achieve overall success.

scholarly journals The application of virtual reality and augmented reality in Oral & Maxillofacial Surgery

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Ashraf Ayoub ◽  
Yeshwanth Pulijala
Keyword(s):  
Virtual Reality ◽  
Augmented Reality ◽  
Virtual Environment ◽  
Orthognathic Surgery ◽  
Maxillofacial Surgery ◽  
The Body ◽  
Historical Perspectives ◽  
Virtual And Augmented Reality ◽  
The Impact

Abstract Background Virtual reality is the science of creating a virtual environment for the assessment of various anatomical regions of the body for the diagnosis, planning and surgical training. Augmented reality is the superimposition of a 3D real environment specific to individual patient onto the surgical filed using semi-transparent glasses to augment the virtual scene.. The aim of this study is to provide an over view of the literature on the application of virtual and augmented reality in oral & maxillofacial surgery. Methods We reviewed the literature and the existing database using Ovid MEDLINE search, Cochran Library and PubMed. All the studies in the English literature in the last 10 years, from 2009 to 2019 were included. Results We identified 101 articles related the broad application of virtual reality in oral & maxillofacial surgery. These included the following: Eight systematic reviews, 4 expert reviews, 9 case reports, 5 retrospective surveys, 2 historical perspectives, 13 manuscripts on virtual education and training, 5 on haptic technology, 4 on augmented reality, 10 on image fusion, 41 articles on the prediction planning for orthognathic surgery and maxillofacial reconstruction. Dental implantology and orthognathic surgery are the most frequent applications of virtual reality and augmented reality. Virtual planning improved the accuracy of inserting dental implants using either a statistic guidance or dynamic navigation. In orthognathic surgery, prediction planning and intraoperative navigation are the main applications of virtual reality. Virtual reality has been utilised to improve the delivery of education and the quality of training in oral & maxillofacial surgery by creating a virtual environment of the surgical procedure. Haptic feedback provided an additional immersive reality to improve manual dexterity and improve clinical training. Conclusion Virtual and augmented reality have contributed to the planning of maxillofacial procedures and surgery training. Few articles highlighted the importance of this technology in improving the quality of patients’ care. There are limited prospective randomized studies comparing the impact of virtual reality with the standard methods in delivering oral surgery education.

Investigating a Virtual Reality Based Subterranean Scenario Examining Augmented Reality Implications for Military Operators

2021 ◽  
Vol 65 (1) ◽  
pp. 1129-1133
Author(s):  
Farakh Zaman ◽  
William Drake ◽  
James Intriligator ◽  
Aaron Gardony ◽  
MA Natick ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Augmented Reality ◽  
Development Process ◽  
New Technologies ◽  
Lessons Learned ◽  
Future Research ◽  
Test Results ◽  
Head Mounted Displays ◽  
Virtual And Augmented Reality ◽  
The Military

Virtual and augmented reality have made it possible to test new technologies for military missions - such as using augmented reality to support complicated subterranean (sub-t) missions. The military will soon offer operators the ability to wear augmented reality (AR) head-mounted displays (HMDs) while conducting missions. Therefore, it is crucial to understand how this emerging technology will positively and negatively impact Soldiers’ ability to execute missions. This paper describes the development of a virtual reality (VR) scenario designed to support user experience research for evaluating the efficacy of Soldier AR systems during sub-t operations. We describe usability test results that captured feedback and reactions to the VR scenario and the AR interface that presented critical information through a VR HMD. We conclude with lessons learned from our development process and future research plans.

scholarly journals Augmented Reality, Virtual Reality and Artificial Intelligence in Orthopedic Surgery: A Systematic Review

2021 ◽  
Vol 11 (7) ◽  
pp. 3253
Author(s):  
Umile Giuseppe Longo ◽  
Sergio De Salvatore ◽  
Vincenzo Candela ◽  
Giuliano Zollo ◽  
Giovanni Calabrese ◽  
...  
Keyword(s):  
Artificial Intelligence ◽  
Systematic Review ◽  
Virtual Reality ◽  
Augmented Reality ◽  
Orthopaedic Surgery ◽  
Resident Training ◽  
Comprehensive Search ◽  
Virtual And Augmented Reality ◽  
Orthopaedic Training ◽  
Meta Analyses

Background: The application of virtual and augmented reality technologies to orthopaedic surgery training and practice aims to increase the safety and accuracy of procedures and reducing complications and costs. The purpose of this systematic review is to summarise the present literature on this topic while providing a detailed analysis of current flaws and benefits. Methods: A comprehensive search on the PubMed, Cochrane, CINAHL, and Embase database was conducted from inception to February 2021. The Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines were used to improve the reporting of the review. The Cochrane Risk of Bias Tool and the Methodological Index for Non-Randomized Studies (MINORS) was used to assess the quality and potential bias of the included randomized and non-randomized control trials, respectively. Results: Virtual reality has been proven revolutionary for both resident training and preoperative planning. Thanks to augmented reality, orthopaedic surgeons could carry out procedures faster and more accurately, improving overall safety. Artificial intelligence (AI) is a promising technology with limitless potential, but, nowadays, its use in orthopaedic surgery is limited to preoperative diagnosis. Conclusions: Extended reality technologies have the potential to reform orthopaedic training and practice, providing an opportunity for unidirectional growth towards a patient-centred approach.

scholarly journals ARETT: Augmented Reality Eye Tracking Toolkit for Head Mounted Displays

Sensors ◽  
2021 ◽  
Vol 21 (6) ◽  
pp. 2234
Author(s):  
Sebastian Kapp ◽  
Michael Barz ◽  
Sergey Mukhametov ◽  
Daniel Sonntag ◽  
Jochen Kuhn
Keyword(s):  
Augmented Reality ◽  
Eye Tracking ◽  
User Interaction ◽  
R Package ◽  
Eye Tracker ◽  
Unity 3D ◽  
Accuracy And Precision ◽  
Head Mounted Displays ◽  
Virtual And Augmented Reality ◽  
Microsoft Hololens

Currently an increasing number of head mounted displays (HMD) for virtual and augmented reality (VR/AR) are equipped with integrated eye trackers. Use cases of these integrated eye trackers include rendering optimization and gaze-based user interaction. In addition, visual attention in VR and AR is interesting for applied research based on eye tracking in cognitive or educational sciences for example. While some research toolkits for VR already exist, only a few target AR scenarios. In this work, we present an open-source eye tracking toolkit for reliable gaze data acquisition in AR based on Unity 3D and the Microsoft HoloLens 2, as well as an R package for seamless data analysis. Furthermore, we evaluate the spatial accuracy and precision of the integrated eye tracker for fixation targets with different distances and angles to the user (n=21). On average, we found that gaze estimates are reported with an angular accuracy of 0.83 degrees and a precision of 0.27 degrees while the user is resting, which is on par with state-of-the-art mobile eye trackers.

scholarly journals Time Travel to the Past of Bosnia and Herzegovina through Virtual and Augmented Reality

2021 ◽  
Vol 11 (8) ◽  
pp. 3711
Author(s):  
Selma Rizvić ◽  
Dušanka Bošković ◽  
Vensada Okanović ◽  
Ivona Ivković Kihić ◽  
Irfan Prazina ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Augmented Reality ◽  
Bosnia And Herzegovina ◽  
Time Travel ◽  
Virtual Museum ◽  
The Past ◽  
Intangible Heritage ◽  
Physical Form ◽  
Virtual And Augmented Reality ◽  
Cultural Monuments

Bosnia and Herzegovina (BH) has a very picturesque past. Founded in 11th century, it has always been a crossroads of faiths and civilizations. Extended Reality (XR) technologies can finally take us to time travel into this history, enable us to experience past events and meet historical characters. In this paper, we overview the latest applications we developed that use Virtual Reality (VR) video, Virtual and Augmented Reality (AR) for interactive digital storytelling about BH history. “Nine dissidents” is the first BH VR documentary, tackling a still tricky subject of dissidents in the Socialist Yugoslavia, artists and writers falsely accused, persecuted and still forbidden. “Virtual Museum of Old Crafts” aims to present and preserve crafts intangible heritage through Virtual Reality. “Battle on Neretva VR” is recreating a famous WWII battle offering the users to experience it and meet comrade Tito, the commander of the Yugoslav Liberation Army. “Sarajevo 5D” shows the cultural monuments from Sarajevo that do not exist anymore in physical form using Augmented Reality. Through user experience studies, we measure the user immersion and edutainment of these applications and show the potential of XR for the presentation and preservation of cultural heritage.

AR- und VR-Brillen in der Fabrikplanung*/Current AR- and VR-glasses in factory planning

2018 ◽  
Vol 108 (04) ◽  
pp. 251-256
Author(s):  
U. Bracht ◽  
M. Schlegel
Keyword(s):  
Virtual Reality ◽  
Augmented Reality ◽  
Significant Progress ◽  
Factory Planning ◽  
Current State ◽  
Virtual And Augmented Reality ◽  
Stand Der Technik

Augmented- und Virtual-Reality-Brillen haben signifikante Fortschritte in ihrer technischen Leistungsfähigkeit gemacht. In diesem Fachartikel wird der aktuelle Stand der Technik von AR- und VR-Brillen beschrieben, die bisherigen Hemmnisse für die Verwendung in der Fabrikplanung erörtert und Einsatzpotenziale aufgezeigt, die sich durch die verbesserte Hardware erschließen lassen.   Virtual and Augmented Reality Glasses have made significant progress. This paper shows the current state of technology as well as previous impediments in usage and points out applications for an efficient factory planning.

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