Assessing the perceptual influence of H.264/SVC Signal-to-Noise Ratio and temporal scalability on full length movies

Staelens, Nicolas; Moens, Stefaan; Broeck, Wendy Van den; Mariën, Ilse; Vermeulen, Brecht; Lambert, Peter; Walle, Rik Van de; Demeester, Piet

doi:10.1109/qomex.2009.5246982

Cited by 12 publications

(28 citation statements)

References 10 publications

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“…A second subjective test was conducted using the same full length DVD movie methodology in [16]. During this test, the influence of H.264 Scalable Video Coding (SVC) on the perceptual quality was studied.…”

Section: Subjective Test Setup For Comparing Real-life Qoe Assesmentioning

confidence: 99%

“…We opted for an SS test which implies that only the degraded videos were shown to the test subjects without the presence of an explicit reference which also corresponds more with watching television, where viewers can only evaluate the received video. The video sequences to be evaluated and rated during this experiment were taken from exactly the same impaired movies used in [14] and [16] and were created as follows. Using the movies from [14], we created 56 short video sequences with a duration of 15 seconds that contained either a frame freeze or random blockiness.…”

Section: Subjective Test Setup For Comparing Real-life Qoe Assesmentioning

confidence: 99%

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Assessing Quality of Experience of IPTV and Video on Demand Services in Real-Life Environments

Staelens

Moens

Broeck³

et al. 2010

IEEE Trans. on Broadcast.

Self Cite

152

108

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Abstract-The ever growing bandwidth in access networks, in combination with IPTV and Video on Demand (VoD) offerings, opens up unlimited possibilities to the users. The operators can no longer compete solely on the number of channels or content and increasingly make High Definition channels and Quality of Experience (QoE) a service differentiator. Currently the most reliable way of assessing and measuring QoE is conducting subjective experiments, where human observers evaluate a series of short video sequences, using one of the international standardized subjective quality assessment methodologies. Unfortunately, since these subjective experiments need to be conducted in controlled environments and pose limitations on the sequences and overall experiment duration they cannot be used for reallife QoE assessment of IPTV and VoD services. In this article, we propose a novel subjective quality assessment methodology based on full length movies. Our methodology enables audiovisual quality assessment in the same environments and under the same conditions users typically watch television. Using our new methodology we conducted subjective experiments and compared the outcome with the results from a subjective test conducted using a standardized method. Our findings indicate significant differences in terms of impairment visibility and tolerance and highlight the importance of real-life QoE assessment.

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Section: Subjective Test Setup For Comparing Real-life Qoe Assesmentioning

confidence: 99%

Section: Subjective Test Setup For Comparing Real-life Qoe Assesmentioning

confidence: 99%

Assessing Quality of Experience of IPTV and Video on Demand Services in Real-Life Environments

Staelens

Moens

Broeck³

et al. 2010

IEEE Trans. on Broadcast.

Self Cite

152

108

View full text Add to dashboard Cite

show abstract

“…The quality of the content was not degraded in any way. Contrary to the conclusions reported in [43,44,46,47], Strohmeier et al state that there were no real differences between the results of real-life and laboratory testing.…”

Section: Evaluation Of Qoe In Real-lifementioning

confidence: 78%

“…Staelens et al in [46] and [47] report on the results of the evaluation of QoE of full-length movies, whose quality was degraded in several segments by introducing packet loss and using video coded with lower bit rates. After receiving the copies of a DVD video, the test subjects were asked just to watch the movie as they would normally do (e.g.…”

Section: Evaluation Of Qoe In Real-lifementioning

confidence: 99%

State-of-the-Practice in Evaluation of Quality of Experience in Real-Life Environments

Matulin¹,

Mrvelj²

2013

PROMET

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“…In a first research project, we conducted an experiment to assess the QoE of IPTV and Video-on-Demand (VoD) services with 36 households (91 subjects) [5,8]. They were asked to watch a full-length movie on their preferred device (TV, Computer, Portable device) and in their preferred social context (alone, with partner, with the entire family).…”

Section: Description Of the Experimentsmentioning

confidence: 99%

Integrating the everyday-life context in subjective video quality experiments

Broeck

Jacobs

Staelens

2012

2012 Fourth International Workshop on Quality of Multimedia Experience

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Controlled subjective quality experiments are a well-known method to make decisions on the improvement of Quality of Service (QoS) of video streams. Recently it became clear that from a point of view of the consumer or user, the Quality of Experience (QoE) is more relevant and can influence the optimal QoS as determined in a lab-setting. The measurement of QoS parameters in a lab-setting does not take into account the specific context of the practice that is under examination (e,g. watching video content).In this paper we discuss a method of contextualized subjective quality experiments as we applied in different research projects in complement to the standardized labexperiments. The strength of this method is that video and audio quality is assessed in the real-life context of the user, i.e. his or her natural habitat in which the behavior or practice normally takes place. We provide an overview of how we applied the contextualized research approach in two cases. Next we discuss the method's strengths and weaknesses and suggest a refinement of the methodology.

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Assessing the perceptual influence of H.264/SVC Signal-to-Noise Ratio and temporal scalability on full length movies

Cited by 12 publications

References 10 publications

Assessing Quality of Experience of IPTV and Video on Demand Services in Real-Life Environments

Assessing Quality of Experience of IPTV and Video on Demand Services in Real-Life Environments

State-of-the-Practice in Evaluation of Quality of Experience in Real-Life Environments

Integrating the everyday-life context in subjective video quality experiments

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