scholarly journals Towards Prediction of Immersive Virtual Reality Image Quality of Experience and Quality of Service

2018 ◽  
Vol 10 (7) ◽  
pp. 63
Author(s):  
Anil Karembai ◽  
Jeffrey Thompson ◽  
Patrick Seeling
Keyword(s):  
Virtual Reality ◽  
Quality Of Service ◽  
Image Quality ◽  
Quality Of Experience ◽  
Immersive Virtual Reality

scholarly journals Image Quality in Augmented Binocular Vision: QoE Approximations with QoS and EEG

2017 ◽  
Vol 61 (4) ◽  
pp. 327 ◽  
Author(s):  
Patrick Seeling
Keyword(s):  
Quality Of Service ◽  
Image Quality ◽  
Augmented Reality ◽  
Binocular Vision ◽  
Quality Of Experience ◽  
Reference Data ◽  
Ground Truth ◽  
Data Set ◽  
Gamma Frequency

Augmented reality (AR) applications become increasingly popular, however, little is known about how multimedia consumption interplays with the Quality of Experience (QoE) in these settings. We experimentally evaluate binocular vision augmentation with optical see-through devices by contrasting QoE, expressed by Mean Opinion Scores (MOS), with a ground truth reference data set. We find that the QoE in AR settings (i) is higher for small media impairments and lower for high impairment levels compared to opaque settings, (ii) exhibits an emerging quantifiable relationship with the QoE in traditional setups, (iii) can be approached with common objective image quality metrics as Quality of Service (QoS) factors, and (iv) exhibits a relationship between the Low Gamma frequency band levels determined with consumer-grade electroencephalograms (EEG) and image quality levels as rated by the participants.

The Perceptual Quality of the Oculus Rift for Immersive Virtual Reality

2016 ◽  
Vol 34 (1) ◽  
pp. 51-82 ◽  
Author(s):  
Manuela Chessa ◽  
Guido Maiello ◽  
Alessia Borsari ◽  
Peter J. Bex
Keyword(s):  
Virtual Reality ◽  
Perceptual Quality ◽  
Immersive Virtual Reality ◽  
Oculus Rift

scholarly journals Validation of the Virtual Reality Neuroscience Questionnaire: Maximum Duration of Immersive Virtual Reality Sessions Without the Presence of Pertinent Adverse Symptomatology

2021 ◽  
Author(s):  
Panagiotis Kourtesis ◽  
Simona Collina ◽  
Leonidas A. A. Doumas ◽  
Sarah E. MacPherson
Keyword(s):  
Virtual Reality ◽  
Cognitive Neuroscience ◽  
Clinical Settings ◽  
Immersive Virtual Reality ◽  
Clinical Tool ◽  
Head Mounted Display ◽  
Brief Assessment ◽  
Game Mechanics ◽  
Maximum Duration

There are major concerns about the suitability of immersive virtual reality (VR) systems (i.e., head-mounted display; HMD) to be implemented in research and clinical settings, because of the presence of nausea, dizziness, disorientation, fatigue, and instability (i.e., VR induced symptoms and effects; VRISE). Research suggests that the duration of a VR session modulates the presence and intensity of VRISE, but there are no suggestions regarding the appropriate maximum duration of VR sessions. The implementation of high-end VR HMDs in conjunction with ergonomic VR software seems to mitigate the presence of VRISE substantially. However, a brief tool does not currently exist to appraise and report both the quality of software features and VRISE intensity quantitatively. The Virtual Reality Neuroscience Questionnaire (VRNQ) was developed to assess the quality of VR software in terms of user experience, game mechanics, in-game assistance, and VRISE. Forty participants aged between 28 and 43 years were recruited (18 gamers and 22 non-gamers) for the study. They participated in 3 different VR sessions until they felt weary or discomfort and subsequently filled in the VRNQ. Our results demonstrated that VRNQ is a valid tool for assessing VR software as it has good convergent, discriminant, and construct validity. The maximum duration of VR sessions should be between 55 and 70 min when the VR software meets or exceeds the parsimonious cut-offs of the VRNQ and the users are familiarized with the VR system. Also, the gaming experience does not seem to affect how long VR sessions should last. Also, while the quality of VR software substantially modulates the maximum duration of VR sessions, age and education do not. Finally, deeper immersion, better quality of graphics and sound, and more helpful in-game instructions and prompts were found to reduce VRISE intensity. The VRNQ facilitates the brief assessment and reporting of the quality of VR software features and/or the intensity of VRISE, while its minimum and parsimonious cut-offs may appraise the suitability of VR software for implementation in research and clinical settings. The findings of this study contribute to the establishment of rigorous VR methods that are crucial for the viability of immersive VR as a research and clinical tool in cognitive neuroscience and neuropsychology.

scholarly journals PENGARUH KUALITAS LAYANAN TERHADAP LOYALITAS NASABAH MELALUI CITRA PERUSAHAAN SEBAGAI VARIABEL MEDIASI

2018 ◽  
Vol 7 (12) ◽  
pp. 6675
Author(s):  
I Made Deddy Saputra ◽  
I Nyoman Nurcaya
Keyword(s):  
Quality Of Service ◽  
Image Quality ◽  
Data Collection ◽  
Customer Satisfaction ◽  
Service Quality ◽  
Path Analysis ◽  
Customer Loyalty ◽  
Corporate Image ◽  
Analysis Technique

Customer satisfaction is an important element in determining and maintaining and growing the company. To be able to develop loyalty among its customers, banks need to know what factors influence loyalty and assess their performance in these factors. This research was conducted at PT. BPR Bali Dananiaga Denpasar. The number of respondents of this study were 117 respondents. Data collection is done through observation, interview and questionnaire. This research uses instrument test by using path analysis technique. Based on the analysis result found that service quality variable have positive and significant effect to company image. Quality of service has a positive and significant impact on customer loyalty. So the better the service quality of PT. BPR Bali Dananiaga, it will increase customer loyalty in PT. BPR Bali Dananiaga in Denpasar City. Corporate image has a positive and significant impact on customer loyalty. Corporate image proved able to mediate positively and significantly influence between service quality to customer loyalty.

Quality of Experience (QoE) for Wireless Video Over Critical Communication Systems

2017 ◽  
pp. 132-167
Author(s):  
Emad Danish ◽  
Mazin I. Alshamrani
Keyword(s):  
Resource Allocation ◽  
Quality Of Service ◽  
Energy Consumption ◽  
Communication Systems ◽  
Quality Of Experience ◽  
Service Providers ◽  
Wireless Video ◽  
User Centric ◽  
Near Future

Video streaming is expected to acquire a massive share of the global internet traffic in the near future. Meanwhile, it is expected that most of the global traffic will be carried over wireless networks. This trend translates into considerable challenges for Service Providers (SP) in terms of maintaining consumers' Quality of Experience (QoE), energy consumption, utilisation of wireless resources, and profitability. However, the majority of Radio Resource Allocation (RRA) algorithms only consider enhancing Quality of Service (QoS) and network parameters. Since this approach may end up with unsatisfied customers in the future, it is essential to develop innovative RRA algorithms that adopt a user-centric approach based on users' QoE. This chapter focus on wireless video over Critical communication systems that are inspired by QoE perceived by end users. This chapter presents a background to introduce the reader to this area, followed by a review of the related up-to-date literature.

A Generic Adaptation Framework for Mobile Communication

2011 ◽  
Vol 2 (1) ◽  
pp. 46-57
Author(s):  
Hong Sun ◽  
Ning Gui ◽  
Chris Blondia
Keyword(s):  
Quality Of Service ◽  
Mobile Devices ◽  
Mobile Communication ◽  
Quality Of Experience ◽  
Adaptation Strategies ◽  
Easy Access ◽  
Mobile Terminals ◽  
System Resources ◽  
New Applications

Today, technologies are providing mobile terminals with much more powerful computational abilities. Such improvement has made it possible to run many complex applications on mobile devices. However, many of these new applications are also resource demanding. Lacking sufficient resources would cause performance failures and impact negatively on the users’ quality of experience. In order to improve this, it is important to provide the users with an easy access to specifying their requirements. It is also crucial to monitor the system resources and make corresponding adaptation immediately according to the user’s specifications. In this paper, the authors propose adaptation strategies that flexibly combine the process of monitoring and adaptation, which provides an easy way to specify user’s requirements. By tuning the quality of service, the applications’ demand on system resources is reduced, thus decreasing the chances of performance failures and improving the users’ quality of experience.

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