Book ChapterDOI
Quality of Experience Assessment in Internet TV
Joana Palhais,Rui Santos Cruz,Mario Nunes +2 more
- pp 261-274
TLDR
From the analysis of the collected data it is possible to demonstrate that the interest level has a strong influence in the subjective assessment of the video quality.Abstract:
Nowadays, Service Providers are increasingly concerned about the concept of Quality of Experience (QoE),, even more, when talking about Internet TV or WebTV, where no guarantees of delivery are provided. This paper describes the research and the results on the influence of the level of interest (on a particular sport) in the subjective quality assessment of the corresponding broadcasted media. This analysis is motivated by the work being developed in the European Project My-eDirector 2012, which has the capability to cover the London Olympic Games 2011 via the Web. Therefore, a subjective test was prepared and performed where each observer visioned and assessed the perceived video quality of a set of six sports, encoded in four different bitrate/resolution sets. From the analysis of the collected data it is possible to demonstrate that the interest level has a strong influence in the subjective assessment of the video quality. Based on these results, an empiric formula was deduced to estimate the Mean Opinion Source (MOS) as a function of bitrate and interest level.read more
Citations
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Journal ArticleDOI
Understanding the role of social context and user factors in video Quality of Experience
TL;DR: The results show that the presence of co-viewers increases the user's level of enjoyment and enhances the endurability of the experience, and so does interest in the video content.
Journal ArticleDOI
Towards Individual QoE for Multiparty Videoconferencing
TL;DR: The impact that video quality has on conversations that revolve around objects that are presented over the video channel is focused on and prior experience with the technology and affective state have on QoE of participants are explored.
Book ChapterDOI
How passive image viewers became active multimedia users : new trends and recent advances in subjective assessment of quality of experience
TL;DR: In this article, the authors review the evolution of subjective QoE assessment and models from the impairment-centric approach to a more usercentric approach, and point out future directions for subjective QOE assessment research.
Journal ArticleDOI
Quality of experience for unified communications: A survey
Jasmina Barakovic Husic,Sabina Baraković,Sabina Baraković,Enida Cero,Enida Cero,Nina Slamnik,Merima Oćuz,Azer Dedović,Osman Zupčić +8 more
TL;DR: In this paper, a quality of experience (QoE) conceptual model for the context of unified communications (UC) through summary, classification, and discussion of multiple influence factors is presented.
Proceedings ArticleDOI
What factors influence the quality of experience for WebRTC video calls
TL;DR: The objective is to determine the most and least influential factors in general according to examined users' opinions in the context of WebRTC video calling, and all for the successful management of QoE.
References
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Proceedings ArticleDOI
Image Quality Metrics: PSNR vs. SSIM
Alain Horé,Djemel Ziou +1 more
TL;DR: A simple mathematical relationship is derived between the peak-signal-to-noise ratio and the structural similarity index measure which works for various kinds of image degradations such as Gaussian blur, additive Gaussian white noise, jpeg and jpeg2000 compression.
Proceedings ArticleDOI
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Proceedings ArticleDOI
A Proposed Approach for Quality of Experience Assurance of IPTV
M.N. Zapater,Graça Bressan +1 more
TL;DR: The proposed approach is based on the use of quality of experience (QoE) concept that focuses on the quality perceived by the end user, broader than that oriented to quality of service (QoS) that primarily focus on the performance measures from the network perspective.
Journal ArticleDOI
The Effect of Content Desirability on Subjective Video Quality Ratings
TL;DR: There is a strong correlation between the desirability of movie content and subjective ratings of video quality and this strong relationship holds across a wide range of encoding levels and movie content when that content is viewed under longer, more naturalistic viewing conditions.
Proceedings Article
Locally averaged PSNR as a simple objective Video Quality Metric
Vranjes,Rimac-Drlje,Grgic +2 more
TL;DR: Locally averaged PSNR has shown much better correlation with MOS then PSNR and slightly worse than more complex VQM and SSIM metrics.