2012 Fourth International Workshop on Quality of Multimedia Experience最新文献_第5页

Improved foveation- and saliency-based visual attention prediction under a quality assessment task 质量评估任务下基于注视和显著性的视觉注意预测改进

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QoMEX.2012.6263871

Milind S. Gide, Lina Karam

{"title":"Improved foveation- and saliency-based visual attention prediction under a quality assessment task","authors":"Milind S. Gide, Lina Karam","doi":"10.1109/QoMEX.2012.6263871","DOIUrl":"https://doi.org/10.1109/QoMEX.2012.6263871","url":null,"abstract":"Image quality assessment is one application out of many that can be aided by the use of computational saliency models. Existing visual saliency models have not been extensively tested under a quality assessment context. Also, these models are typically geared towards predicting saliency in non-distorted images. Recent work has also focussed on mimicking the human visual system in order to predict fixation points from saliency maps. One such technique (GAFFE) that uses foveation has been found to perform well for non-distorted images. This work extends the foveation framework by integrating it with saliency maps from well known saliency models. The performance of the foveated saliency models is evaluated based on a comparison with human ground-truth eye-tracking data. For comparison, the performance of the original non-foveated saliency predictions is also presented. It is shown that the integration of saliency models with a foveation based fixation finding framework significantly improves the prediction performance of existing saliency models over different distortion types. It is also found that the information maximization based saliency maps perform the best consistently over different distortion types and levels under this foveation based framework.","PeriodicalId":6303,"journal":{"name":"2012 Fourth International Workshop on Quality of Multimedia Experience","volume":"44 1","pages":"200-205"},"PeriodicalIF":0.0,"publicationDate":"2012-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82847809","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: 8

Integrating the everyday-life context in subjective video quality experiments 在主观视频质量实验中融入日常生活情境

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QoMEX.2012.6263848

W. V. D. Broeck, An Jacobs, N. Staelens

引用次数: 14

Ensuring Quality of Experience for markerless image recognition applied to print media content 确保用于印刷媒体内容的无标记图像识别的体验质量

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QOMEX.2012.6263857

S. Davis, E. Cheng, C. Ritz, I. Burnett

{"title":"Ensuring Quality of Experience for markerless image recognition applied to print media content","authors":"S. Davis, E. Cheng, C. Ritz, I. Burnett","doi":"10.1109/QOMEX.2012.6263857","DOIUrl":"https://doi.org/10.1109/QOMEX.2012.6263857","url":null,"abstract":"This paper investigates how minimal user interaction paradigms and markerless image recognition technologies can be applied to matching print media content to online digital proofs. By linking print material to online content, users can enhance their experience with traditional forms of print media with updated online content, videos, interactive online features etc. The proposed approach is based on extracting features from images/text from mobile device camera images to form `fingerprints' that are used to find matching images/text within a limited test set. An important criterion for these applications is to ensure that the user Quality of Experience (QoE), particularly in terms of matching accuracy and time, is robust to a variety of conditions typically encountered in practical scenarios. In this paper, the performance of a number of computer vision techniques that extract the image features and form the fingerprints are analysed and compared. Both computer simulation tests and mobile device experiments in realistic user conditions are conducted to study the effectiveness of the techniques when considering scale, rotation, blur and lighting variations typically encountered by a user.","PeriodicalId":6303,"journal":{"name":"2012 Fourth International Workshop on Quality of Multimedia Experience","volume":"29 1","pages":"158-163"},"PeriodicalIF":0.0,"publicationDate":"2012-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75982417","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: 6

QoE in 10 seconds: Are short video clip lengths sufficient for Quality of Experience assessment? 10秒QoE:短视频片段长度是否足以进行体验质量评估?

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QoMEX.2012.6263851

Peter Fröhlich, S. Egger, R. Schatz, M. Mühlegger, Kathrin Masuch, B. Gardlo

引用次数: 54

NAMA3DS1-COSPAD1: Subjective video quality assessment database on coding conditions introducing freely available high quality 3D stereoscopic sequences NAMA3DS1-COSPAD1:编码条件的主观视频质量评估数据库，引入免费的高质量3D立体序列

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QoMEX.2012.6263847

Matthieu Urvoy, M. Barkowsky, Romain Cousseau, Yao Koudota, V. Ricordel, P. Callet, Jesús Gutiérrez, N. García

{"title":"NAMA3DS1-COSPAD1: Subjective video quality assessment database on coding conditions introducing freely available high quality 3D stereoscopic sequences","authors":"Matthieu Urvoy, M. Barkowsky, Romain Cousseau, Yao Koudota, V. Ricordel, P. Callet, Jesús Gutiérrez, N. García","doi":"10.1109/QoMEX.2012.6263847","DOIUrl":"https://doi.org/10.1109/QoMEX.2012.6263847","url":null,"abstract":"Research in stereoscopic 3D coding, transmission and subjective assessment methodology depends largely on the availability of source content that can be used in cross-lab evaluations. While several studies have already been presented using proprietary content, comparisons between the studies are difficult since discrepant contents are used. Therefore in this paper, a freely available dataset of high quality Full-HD stereoscopic sequences shot with a semiprofessional 3D camera is introduced in detail. The content was designed to be suited for usage in a wide variety of applications, including high quality studies. A set of depth maps was calculated from the stereoscopic pair. As an application example, a subjective assessment has been performed using coding and spatial degradations. The Absolute Category Rating with Hidden Reference method was used. The observers were instructed to vote on video quality only. Results of this experiment are also freely available and will be presented in this paper as a first step towards objective video quality measurement for 3DTV.","PeriodicalId":6303,"journal":{"name":"2012 Fourth International Workshop on Quality of Multimedia Experience","volume":"152 1","pages":"109-114"},"PeriodicalIF":0.0,"publicationDate":"2012-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86268773","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: 134

Optimizing image quality in MRI: On the evaluation of k-space trajectories for under-sampled MR acquisition 优化MRI图像质量:对低采样MR采集的k空间轨迹的评估

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QoMEX.2012.6263881

H. Luong, B. Goossens, J. Aelterman, L. Platisa, W. Philips

{"title":"Optimizing image quality in MRI: On the evaluation of k-space trajectories for under-sampled MR acquisition","authors":"H. Luong, B. Goossens, J. Aelterman, L. Platisa, W. Philips","doi":"10.1109/QoMEX.2012.6263881","DOIUrl":"https://doi.org/10.1109/QoMEX.2012.6263881","url":null,"abstract":"Modern magnetic resonance (MR) applications require high-speed acquisitions. One of the possible ways to accelerate the process is to acquire the data along a k-space trajectory at sub-Nyquist rate and then reconstruct the image by an iterative non-linear reconstruction algorithm. The choice of k-space trajectory and its parameters has a large influence on the image quality. For physicians it is more important to optimize the reconstructed image and thus the trajectory for diagnostic tasks than creating aesthetically pleasing images. Task-specific model observers have been proposed in order to replace the time-consuming and costly human observer experiments. Very recently, we have developed a novel model observer for signal-known-statistically tasks, which can also measure several image quality factors such as noise, blur and contrast without reference images. In this paper, we discuss the image quality for several k-space trajectories in a pilot study. We find that traditionally used measures such as RMSE or PSNR do not correlate with the diagnostic image quality. Alternative measures are brought through our newly developed model observers.","PeriodicalId":6303,"journal":{"name":"2012 Fourth International Workshop on Quality of Multimedia Experience","volume":"230 1","pages":"25-26"},"PeriodicalIF":0.0,"publicationDate":"2012-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83689092","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: 5

Task-based subject validation: Reliability metrics 基于任务的主题验证:可靠性度量

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QoMEX.2012.6263863

L. Janowski

引用次数: 6

Perception of low-quality videos analyzed by means of electroencephalography 用脑电图分析低质量视频的感知

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QoMEX.2012.6263836

S. Arndt, Jan-Niklas Antons, R. Schleicher, S. Möller, G. Curio

引用次数: 31

Impact of mobile devices and usage location on perceived multimedia quality 移动设备和使用地点对感知多媒体质量的影响

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QoMEX.2012.6263834

Andrew Catellier, M. Pinson, William Ingram, Arthur A. Webster

引用次数: 33

Content categorization based on implicit and explicit user feedback: Combining self-reports with EEG emotional state analysis 基于内隐和外显用户反馈的内容分类:结合自我报告和脑电图情绪状态分析

2012 Fourth International Workshop on Quality of Multimedia Experience Pub Date : 2012-07-05 DOI: 10.1109/QoMEX.2012.6263850

U. Reiter, K. Moor

引用次数: 13