2011 Third International Workshop on Quality of Multimedia Experience最新文献_第5页

Efficient frame complexity estimation and application to G.1070 vide quality monitoring 高效帧复杂度估计及其在G.1070视频质量监控中的应用

2011 Third International Workshop on Quality of Multimedia Experience Pub Date : 2011-11-03 DOI: 10.1109/QoMEX.2011.6065720

Beibei Wang, D. Zou, Ran Ding, Tao Liu, S. Bhagavathy, Niranjan D. Narvekar, J. Bloom

{"title":"Efficient frame complexity estimation and application to G.1070 vide quality monitoring","authors":"Beibei Wang, D. Zou, Ran Ding, Tao Liu, S. Bhagavathy, Niranjan D. Narvekar, J. Bloom","doi":"10.1109/QoMEX.2011.6065720","DOIUrl":"https://doi.org/10.1109/QoMEX.2011.6065720","url":null,"abstract":"ITU has standardized a computational model as Recommendation G.1070 for Quality of Experience (QoE) planning [1]. In our previous work, we proposed a system for calculating the G.1070 visual quality estimate in a monitoring scenario [2]. In G.1070, the visual quality is based, in part, on frame rate, bitrate, and packet-loss rate. For a fixed frame rate and a fixed packet-loss rate, the G.1070 visual quality score will decrease with decreases in bitrate. However, G.1070 cannot distinguish between cases in which a decrease in bitrate truly does represent a decrease in quality and cases in which the underlying content is easy to encode, thus resulting in a lower bitrate without a corresponding decrease in quality. In this paper, we propose a modification to G.1070 model to account for this difference by including an analysis of the underlying complexity of the video content. More specifically, we propose a quality measure in which the bitrate input to G.1070 is replaced with a normalized bitrate, where the normalization is based on an estimate of the complexity of the compressed content. With this proposed enhancement to the model (named as G.1070E), it allows a much better approximation to MOS values and the NTIA-VQM[3].","PeriodicalId":6441,"journal":{"name":"2011 Third International Workshop on Quality of Multimedia Experience","volume":"15 1","pages":"96-101"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87146722","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: 3

Spatial-temporal Video Quality Metric based on an estimation of QoE 基于QoE估计的时空视频质量度量

2011 Third International Workshop on Quality of Multimedia Experience Pub Date : 2011-11-03 DOI: 10.1109/QoMEX.2011.6065718

S. A. Amirshahi, M. Larabi

引用次数: 25

Contrast effect on 3D and 2D video perception 3D和2D视频感知的对比效果

2011 Third International Workshop on Quality of Multimedia Experience Pub Date : 2011-11-03 DOI: 10.1109/QoMEX.2011.6065698

Z. Mai, M. Pourazad, P. Nasiopoulos

引用次数: 2

Automatic prediction of saliency on JPEG distorted images 对JPEG失真图像的显著性自动预测

2011 Third International Workshop on Quality of Multimedia Experience Pub Date : 2011-11-03 DOI: 10.1109/QoMEX.2011.6065702

Anish Mittal, Anush K. Moorthy, A. Bovik, L. Cormack

引用次数: 11

No-reference video quality assessment for SD and HD H.264/AVC sequences based on continuous estimates of packet loss visibility 基于连续估计丢包可见性的SD和HD H.264/AVC序列的无参考视频质量评估

2011 Third International Workshop on Quality of Multimedia Experience Pub Date : 2011-11-03 DOI: 10.1109/QoMEX.2011.6065708

S. Argyropoulos, A. Raake, Marie-Neige Garcia, P. List

{"title":"No-reference video quality assessment for SD and HD H.264/AVC sequences based on continuous estimates of packet loss visibility","authors":"S. Argyropoulos, A. Raake, Marie-Neige Garcia, P. List","doi":"10.1109/QoMEX.2011.6065708","DOIUrl":"https://doi.org/10.1109/QoMEX.2011.6065708","url":null,"abstract":"In this paper, a novel method for predicting the visibility of packet losses in SD and HD H.264/AVC video sequences and modeling their impact on perceived quality is proposed. Based on the findings of a new subjective experiment it is initially shown that the classification of packet loss visibility in a binary fashion is not sufficient to model the perceptual degradations caused by the transmission errors. The proposed no-reference algorithm extracts a set of features from the video bit-stream to account for the spatial and temporal characteristics of the video content and the induced distortion due to the network impairments. Subsequently, the visibility of packet losses is predicted in a continuous fashion using Support Vector Regression. Finally, a no-reference bit-stream based video quality assessment model that explicitly employs the predicted packet loss visibility estimates is presented. The evaluation of the proposed model demonstrates that the use of continuous estimates for the visibility of packet losses improves the performance of the video quality assessment model.","PeriodicalId":6441,"journal":{"name":"2011 Third International Workshop on Quality of Multimedia Experience","volume":"57 1","pages":"31-36"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74506252","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: 36

On the way to high-quality video calls in future mobile networks 在未来移动网络中实现高质量视频通话的路上

2011 Third International Workshop on Quality of Multimedia Experience Pub Date : 2011-11-03 DOI: 10.1109/QoMEX.2011.6065710

Blazej Lewcio, Benjamin Belmudez, Theresa Enghardt, S. Möller

{"title":"On the way to high-quality video calls in future mobile networks","authors":"Blazej Lewcio, Benjamin Belmudez, Theresa Enghardt, S. Möller","doi":"10.1109/QoMEX.2011.6065710","DOIUrl":"https://doi.org/10.1109/QoMEX.2011.6065710","url":null,"abstract":"Seamless use of video telephony in future mobile communication systems creates new challenges for high-quality provisioning. Terminal mobility and dynamically changing network properties will affect the quality of the Internet connection and consequently will impair the Quality of Experience (QoE) of mobile users. To ensure best connected video calls, cross-layer adaptation of the audiovisual transmission to the network circumstances will be required. To successfully adapt the transmission parameters, knowledge about the user perception during mobile video calls is required. This paper addresses this issue and presents a study of quality experience during selected periods of emulated video calls. Perception of dynamic phenomena, such as roaming between network technologies, switching the video and speech codecs, and changing the video bit rate during active calls are in scope of the investigation. The QoE of the analysed material is linked to the underlying transmission properties, which allows to select proper strategies of QoE adaptation during mobile video calls in future wireless networks.","PeriodicalId":6441,"journal":{"name":"2011 Third International Workshop on Quality of Multimedia Experience","volume":"1 1","pages":"43-48"},"PeriodicalIF":0.0,"publicationDate":"2011-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72978973","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: 18

Quality evaluation of stereoscopic videos using depth map segmentation 基于深度图分割的立体视频质量评价

2011 Third International Workshop on Quality of Multimedia Experience Pub Date : 2011-11-03 DOI: 10.1109/QoMEX.2011.6065714

Selim S. Sarikan, Ramazan F. Olgun, G. Akar

引用次数: 8

Comparison of two mixed methods approaches for multimodal quality evaluations: Open Profiling of Quality and Conventional Profiling 多模态质量评价的两种混合方法:开放式质量分析与常规质量分析的比较

2011 Third International Workshop on Quality of Multimedia Experience Pub Date : 2011-11-03 DOI: 10.1109/QoMEX.2011.6065691

K. Kunze, D. Strohmeier, Satu Jumisko-Pyykkö

引用次数: 2

QOE-driven mobility management — Integrating the users' quality perception into network — Level decision making qoe驱动的移动性管理——将用户的质量感知整合到网络级决策中

2011 Third International Workshop on Quality of Multimedia Experience Pub Date : 2011-11-03 DOI: 10.1109/QoMEX.2011.6065703

M. Varela, J. Laulajainen

引用次数: 17

Subjective visual quality assessment in the presence of audio for Digital Cinema 数字电影音频存在下的主观视觉质量评价

2011 Third International Workshop on Quality of Multimedia Experience Pub Date : 2011-11-03 DOI: 10.1109/QoMEX.2011.6065687

Fitri N. Rahayu, U. Reiter, Junyong You, A. Perkis, T. Ebrahimi

引用次数: 3