scholarly journals Optical methods for enabling focus cues in head-mounted displays for virtual and augmented reality

2017 ◽  
Author(s):  
Hong Hua
Keyword(s):  
Augmented Reality ◽  
Optical Methods ◽  
Focus Cues ◽  
Head Mounted Displays ◽  
Virtual And Augmented Reality

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.

Immersive reading in virtual and augmented reality environment

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Pei-Luen Patrick Rau ◽  
Jian Zheng ◽  
Zhi Guo
Keyword(s):  
Augmented Reality ◽  
Liquid Crystal Display ◽  
Reading Speed ◽  
Reading Performance ◽  
Multiple Choice Questions ◽  
Content Type ◽  
Head Mounted Displays ◽  
Virtual And Augmented Reality ◽  
Display Quality ◽  
Speed And Accuracy

Purpose This study aims to investigate “immersive reading,” which occurs when individuals read text while in a virtual reality (VR) or augmented reality (AR) environment. Design/methodology/approach In Experiment 1, 64 participants read text passages and answered multiple-choice questions in VR and AR head-mounted displays (HMDs) compared with doing the same task on liquid crystal display (LCD). In Experiment 2, 31 participants performed the same reading tasks but with two VR HMDs of different display quality. Findings Compared with reading on LCD as the baseline, participants reading in VR and AR HMDs got 82% (VR) and 88% (AR) of the information accurately. Participants tended to respond more accurately and faster, though not statistically significant, with the VR HMD of higher pixel density in the speed-reading task. Originality/value The authors observed the speed and accuracy of reading in VR and AR environments, compared with the reading speed and accuracy on an LCD monitor. The authors also compared the reading performance on two VR HMDs that differed in display quality but were otherwise similar in every way.

Piezo-actuated varifocal head-mounted displays for virtual and augmented reality

2019 ◽  
Author(s):  
Pierre-Yves Laffont ◽  
Ali Hasnain ◽  
Shukri B. Jalil ◽  
Kutluhan Buyukburc ◽  
Pierre-Yves Guillemet ◽  
...  
Keyword(s):  
Augmented Reality ◽  
Head Mounted Displays ◽  
Virtual And Augmented Reality

scholarly journals P300 Brain–Computer Interface-Based Drone Control in Virtual and Augmented Reality

Sensors ◽  
2021 ◽  
Vol 21 (17) ◽  
pp. 5765
Author(s):  
Soram Kim ◽  
Seungyun Lee ◽  
Hyunsuk Kang ◽  
Sion Kim ◽  
Minkyu Ahn
Keyword(s):  
Augmented Reality ◽  
Brain Computer Interface ◽  
Self Control ◽  
Computer Interface ◽  
Head Mounted Displays ◽  
Before And After ◽  
Virtual And Augmented Reality ◽  
Program Environment ◽  
Control Application ◽  
Drone Control

Since the emergence of head-mounted displays (HMDs), researchers have attempted to introduce virtual and augmented reality (VR, AR) in brain–computer interface (BCI) studies. However, there is a lack of studies that incorporate both AR and VR to compare the performance in the two environments. Therefore, it is necessary to develop a BCI application that can be used in both VR and AR to allow BCI performance to be compared in the two environments. In this study, we developed an opensource-based drone control application using P300-based BCI, which can be used in both VR and AR. Twenty healthy subjects participated in the experiment with this application. They were asked to control the drone in two environments and filled out questionnaires before and after the experiment. We found no significant (p > 0.05) difference in online performance (classification accuracy and amplitude/latency of P300 component) and user experience (satisfaction about time length, program, environment, interest, difficulty, immersion, and feeling of self-control) between VR and AR. This indicates that the P300 BCI paradigm is relatively reliable and may work well in various situations.

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 Accuracy Evaluation of Touch Tasks in Commodity Virtual and Augmented Reality Head-Mounted Displays

2021 ◽  
Author(s):  
Daniel Schneider ◽  
Verena Biener ◽  
Alexander Otte ◽  
Travis Gesslein ◽  
Philipp Gagel ◽  
...  
Keyword(s):  
Augmented Reality ◽  
Accuracy Evaluation ◽  
Head Mounted Displays ◽  
Virtual And Augmented Reality

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.

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.

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