2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX)最新文献_第3页

Perceptual quality of 4K-resolution video content compared to HD 与高清相比，4k分辨率视频内容的感知质量

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498935

G. Wallendael, Paulien Coppens, Tom Paridaens, Niels Van Kets, W. V. D. Broeck, P. Lambert

{"title":"Perceptual quality of 4K-resolution video content compared to HD","authors":"G. Wallendael, Paulien Coppens, Tom Paridaens, Niels Van Kets, W. V. D. Broeck, P. Lambert","doi":"10.1109/QoMEX.2016.7498935","DOIUrl":"https://doi.org/10.1109/QoMEX.2016.7498935","url":null,"abstract":"With the introduction of 4K UHD video and display resolution, questions arise on the perceptual differences between 4K UHD and upsampled HD video content. In this paper, a striped pair comparison has been performed on a diverse set of 4K UHD video sources. The goal was to subjectively assess the perceived sharpness of 4K UHD and downscaled/upscaled HD video. A striped pair comparison has been applied in order to make the test as straightforward as possible for a non-expert participant population. Under these conditions and over this set of sequences, on average, on 54.8% of the sequences (17 out of 31), 4K UHD resolution content could be identified as being sharper compared to its HD down and upsampled alternative. The probabilities in which 4K UHD could be differentiated from downscaled/upscaled HD range from 83.3% for the easiest to assess sequence down to 39.7% for the most difficult sequence. Although significance tests demonstrate there is a positive sharpness difference from camera quality 4K UHD content compared to the HD downscaled/upscaled variations, it is very content dependent and all circumstances have been chosen in favor of the 4K UHD representation. The results of this test can contribute to the research process of developing metrics indicating visibility of high resolution features within specific content.","PeriodicalId":6645,"journal":{"name":"2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX)","volume":"30 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2016-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89742301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

Estimation of perceptual redundancies of HEVC encoded dynamic textures HEVC编码动态纹理的感知冗余估计

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498931

Karam Naser, V. Ricordel, P. Callet

引用次数: 4

Personalizing User Interfaces for improving quality of experience in VoD recommender systems 个性化用户界面，提高视频点播推荐系统的体验质量

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498940

Sharath Chandra Guntuku, S. Roy, Weisi Lin, Kelvin Ng, W. Ng, V. Jakhetiya

引用次数: 8

Bitrate classification of twice-encoded audio using objective quality features 使用客观质量特征的二次编码音频的比特率分类

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498956

Colm Sloan, N. Harte, D. Kelly, A. Kokaram, Andrew Hines

引用次数: 3

(Re-)actions speak louder than words? A novel test method for tracking user behavior in web video services 行动胜于雄辩?一种新的跟踪网络视频服务中用户行为的测试方法

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498926

W. Robitza, A. Raake

引用次数: 18

Towards training naïve participants for a perceptual annotation task designed for experts 面向培训naïve参与者为专家设计的感知标注任务

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498921

Friedemann Köster, Dennis Guse, Christian Miethaner, S. Möller

{"title":"Towards training naïve participants for a perceptual annotation task designed for experts","authors":"Friedemann Köster, Dennis Guse, Christian Miethaner, S. Möller","doi":"10.1109/QoMEX.2016.7498921","DOIUrl":"https://doi.org/10.1109/QoMEX.2016.7498921","url":null,"abstract":"Technical Causes Analysis (P.TCA) is a method for identifying technical causes of sub-optimum speech transmission quality. Originally created as an expert procedure for the annotation of speech samples, its applicability to naïve listener was also studied. Due to the low agreement of naïve listener annotations, it was suggested that detailed training methods are necessary to lift naïve annotations to an agreement level of experts. The aim of this work was to develop training methods for naïve annotators. For this, two different training procedures were developed and tested in two separate annotation experiments. The results are analyzed and discussed regarding the effects of the trainings and their implications for the P.TCA annotation scheme. The outcome shows that these training methods did not meet the expectations for improving the inter-rater agreement of naïve annotators. It is concluded that trainings of 15 to 20 minutes rather confuse naïve annotators by conveying too much information in too little time, and that they are not sufficient to prepare naïve annotators. It is argued that much more extensive training is needed to raise naïve annotators to expert level, and that such a training must include both, in-depth introduction to the annotation process as well as detailed presentation and exercise regarding the P.TCA degradations.","PeriodicalId":6645,"journal":{"name":"2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX)","volume":"46 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2016-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74274539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Consumer-photo quality assessment: Challenges and pitfalls in crowdsourcing 消费者照片质量评估:众包的挑战和陷阱

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498970

Michele A. Saad, Patrick McKnight, Jake Quartuccio, David G. Nicholas, Ramesh Jaladi, P. Corriveau

引用次数: 0

Assessment of spherical microphone array auralizations using open-profiling of quality (OPQ) 基于开放质量剖面(OPQ)的球形传声器阵列声场评价

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498928

Johannes Nowak, Kai-Peter Jurgeit, Judith Liebetrau

引用次数: 4

Determining and labeling the preference dimensions of spatial audio replay 确定和标记空间音频重放的偏好维度

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498948

J. Francombe, Tim S. Brookes, R. Mason, James Woodcock

{"title":"Determining and labeling the preference dimensions of spatial audio replay","authors":"J. Francombe, Tim S. Brookes, R. Mason, James Woodcock","doi":"10.1109/QoMEX.2016.7498948","DOIUrl":"https://doi.org/10.1109/QoMEX.2016.7498948","url":null,"abstract":"There are currently many spatial audio reproduction systems in domestic use (e.g. mono, stereo, surround sound, sound bars, and headphones). In an experiment, pairwise preference magnitude ratings for a range of such systems were collected from trained and untrained listeners. The ratings were analysed using internal preference mapping to: (i) uncover the principal perceptual dimensions of listener preference; (ii) label the dimensions based on important perceptual attributes; and (iii) observe differences between trained and untrained listeners. To aid with labelling the dimensions, perceptual attributes were elicited alongside the preference ratings and were analysed by: (i) considering a metric derived from the frequency of use of each attribute and the magnitude of the related preference judgements; and (ii) observing attribute use for comparisons between specific methods. The first preference dimension accounted for over 90% of the variance in ratings; all participants exhibited a preference for reproduction methods that were positively correlated with the first dimension (most notably 5-, 9-, and 22-channel surround sound). This dimension was related to multiple important attributes, including those associated with spatial capability and absence of distortions. The second dimension accounted for only a very small proportion of the variance, and appeared to separate the headphone method from the other methods. The trained and untrained listeners generally showed opposite preferences in the second dimension, suggesting that trained listeners have a higher preference for headphone reproduction than untrained listeners.","PeriodicalId":6645,"journal":{"name":"2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX)","volume":"74 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2016-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81542383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Perception of quality in cloud computing based services 基于云计算的服务的质量感知

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498925

Aleksandar Karadimce, D. Davcev

引用次数: 5