2012 Fourth International Workshop on Quality of Multimedia Experience最新文献_第3页

A perceptual quality based rate distortion model 基于感知质量的速率失真模型

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QOMEX.2012.6263859

Chao Wang, X. Mou, Lei Zhang

引用次数: 1

Performance comparison of subjective assessment methods for 3D video quality 三维视频质量主观评价方法的性能比较

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QoMEX.2012.6263833

Taichi Kawano, Kazuhisa Yamagishi, Takanori Hayashi

引用次数: 36

Initial delay vs. interruptions: Between the devil and the deep blue sea 最初的延迟vs.中断:在魔鬼和深蓝色的大海之间

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QoMEX.2012.6263849

T. Hossfeld, S. Egger, R. Schatz, M. Fiedler, Kathrin Masuch, C. Lorentzen

{"title":"Initial delay vs. interruptions: Between the devil and the deep blue sea","authors":"T. Hossfeld, S. Egger, R. Schatz, M. Fiedler, Kathrin Masuch, C. Lorentzen","doi":"10.1109/QoMEX.2012.6263849","DOIUrl":"https://doi.org/10.1109/QoMEX.2012.6263849","url":null,"abstract":"End user quality perception in the context of Internet applications is often characterized by waiting times before service consumption as well as interruptions during service consumption. In particular in case of bad network conditions, network and service providers have to trade off between these two impairment types, i.e. between the devil and the deep blue sea. In this paper we investigate this tradeoff in order to guide the design and development of Internet applications and network management approaches. The contribution of this paper is twofold. Firstly, we quantify the impact of initial delays on the user perceived Quality of Experience (QoE) for different application scenarios by means of subjective laboratory and crowdsourcing studies. We show that QoE for a given waiting time strongly depends on the concrete application at hand but that rating diversity remains fairly application-invariant. Secondly, using the example of YouTube video streaming we compare the influence of initial delays and interruptions (stallings) during watching. Our results demonstrate that users are extremely sensitive to interruptions and that services should be designed accordingly e.g. by increasing initial delay for prebuffering to overcome lack of resources.","PeriodicalId":6303,"journal":{"name":"2012 Fourth International Workshop on Quality of Multimedia Experience","volume":"65 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2012-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80204582","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: 256

Packet loss protection for interactive audio object rendering: A multiple description approach 交互式音频对象呈现的丢包保护:一种多重描述方法

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QOMEX.2012.6263843

Xiguang Zheng, C. Ritz

引用次数: 3

Predicting video call quality in future mobile networks 预测未来移动网络的视频通话质量

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QoMEX.2012.6263852

Blazej Lewcio, S. Möller

引用次数: 1

Feature set augmentation for enhancing the performance of a non-intrusive quality predictor 用于增强非侵入式质量预测器性能的特征集增强

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QoMEX.2012.6263856

Petko N. Petkov, H. Helgason, W. Kleijn

{"title":"Feature set augmentation for enhancing the performance of a non-intrusive quality predictor","authors":"Petko N. Petkov, H. Helgason, W. Kleijn","doi":"10.1109/QoMEX.2012.6263856","DOIUrl":"https://doi.org/10.1109/QoMEX.2012.6263856","url":null,"abstract":"A non-intrusive quality predictor constitutes a mapping from signal features to a (typically one dimensional) representation of the perceived quality. Assuming that the regression model performing the mapping is suited to the data, the performance of the predictor largely depends on how well the parameters of this regression model can be inferred from the training data. In situations where the training data is scarce, model performance is degraded due to over-fitting. The effects of over-fitting can be mitigated by feature selection but the model performance remains low due to the insufficiently representative training data. The objective we pursue is to enhance the performance of a quality predictor by augmenting the feature set with the output of a pre-trained quality predictor. This approach introduces an implicit dependence of the regression model parameters on a larger amount of training data. In view of the increasing usage of speech signals with higher bandwidth, and the dearth of training data for such signals, an augmentation of particular interest is that of a wide-band feature set with a narrow-band quality prediction. Experimental results for additive noise and non-linear distortions encountered in hearing aids, using quality labels from an intrusive quality predictor, illustrate the performance enhancement capabilities of the proposed approach.","PeriodicalId":6303,"journal":{"name":"2012 Fourth International Workshop on Quality of Multimedia Experience","volume":"19 1","pages":"121-126"},"PeriodicalIF":0.0,"publicationDate":"2012-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84445760","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: 1

Quality assessment of asymmetric stereo pair formed from decoded and synthesized views 解码和合成视点形成的非对称立体对的质量评价

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QoMEX.2012.6263854

Philippe Hanhart, F. D. Simone, T. Ebrahimi

引用次数: 16

Studying the challenges in assessing the perceived quality of mobile-phone based video 研究评估手机视频感知质量的挑战

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QoMEX.2012.6263853

Selim Ickin, L. Janowski, K. Wac, M. Fiedler

引用次数: 10

The QoE alchemy: Turning quality into money. Experiences with a refined methodology for the evaluation of willingness-to-pay for service quality QoE炼金术:将质量转化为金钱。对服务质量付费意愿评估的精细化方法的经验

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QoMEX.2012.6263846

A. Sackl, S. Egger, Patrick Zwickl, P. Reichl

引用次数: 29

Preliminary findings on image preference characterization based on neurophysiological signal analysis: Towards objective QoE modeling 基于神经生理信号分析的图像偏好表征初探——面向客观QoE建模

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QoMEX.2012.6263874

T. Falk, Yael Pomerantz, K. Laghari, S. Möller, T. Chau

引用次数: 9