2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX)最新文献_第5页

Software to Stress Test Image Quality Estimators 软件压力测试图像质量估计器

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498945

He Liu, A. Reibman

引用次数: 12

Next generation audio system assessment using the multiple stimulus ideal profile method 新一代音频系统多刺激理想剖面法评价

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498966

N. Zacharov, C. Pike, F. Melchior, T. Worch

引用次数: 20

Spatio-temporal error concealment technique for high order multiple description coding schemes including subjective assessment 含主观评价的高阶多重描述编码方案的时空误差隐藏技术

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498929

Ahmed Aldahdooh, M. Barkowsky, P. Callet

{"title":"Spatio-temporal error concealment technique for high order multiple description coding schemes including subjective assessment","authors":"Ahmed Aldahdooh, M. Barkowsky, P. Callet","doi":"10.1109/QoMEX.2016.7498929","DOIUrl":"https://doi.org/10.1109/QoMEX.2016.7498929","url":null,"abstract":"Error resilience (ER) is an important tool in video coding to maximize the quality of Experience (QoE). The prediction process in video coding became complex which yields an unsatisfying video quality when NALunit packets are lost in error-prone channels. There are different ER techniques and multiple description coding (MDC) is one of the promising technique for this problem. MDC is categorized into different types and, in this paper, we focus on temporal MDC techniques. In this paper, a new temporal MDC scheme is proposed. In the encoding process, the encoded descriptions contain primary frames and secondary frames (redundant representations). The secondary frames represent the MVs that are predicted from previous primary frames such that the residual signal is set to zero and is not part of the rate distortion optimization. In the decoding process of the lost frames, a weighted average error concealment (EC) strategy is proposed to conceal these frames. The proposed scheme is subjectively evaluated along with other schemes and the results show that the proposed scheme is significantly different from most of other temporal MDC schemes.","PeriodicalId":6645,"journal":{"name":"2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX)","volume":"33 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":"74596314","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

On the accuracy of objective image and video quality models: New methodology for performance evaluation 客观图像和视频质量模型的准确性:性能评价的新方法

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498936

Lukáš Krasula, K. Fliegel, P. Callet, M. Klima

{"title":"On the accuracy of objective image and video quality models: New methodology for performance evaluation","authors":"Lukáš Krasula, K. Fliegel, P. Callet, M. Klima","doi":"10.1109/QoMEX.2016.7498936","DOIUrl":"https://doi.org/10.1109/QoMEX.2016.7498936","url":null,"abstract":"There are several standard methods for evaluating the performance of models for objective quality assessment with respect to results of subjective tests. However, all of them suffer from one or more of the following drawbacks: They do not consider the uncertainty in the subjective scores, requiring the models to make certain decision where the correct behavior is not known. They are vulnerable to the quality range of the stimuli in the experiments. In order to compare the models, they require a mapping of predicted values to the subjective scores, thus not comparing the models exactly as they are used in the real scenarios. In this paper, new methodology for objective models performance evaluation is proposed. The method is based on determining the classification abilities of the models considering two scenarios inspired by the real applications. It does not suffer from the previously stated drawbacks and enables to easily evaluate the performance on the data from multiple subjective experiments. Moreover, techniques to determine statistical significance of the performance differences are suggested. The proposed framework is tested on several selected metrics and datasets, showing the ability to provide a complementary information about the models' behavior while being in parallel with other state-of-the-art methods.","PeriodicalId":6645,"journal":{"name":"2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX)","volume":"357 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":"80160490","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: 75

Reduced-reference image quality assessment based on DCT Subband Similarity 基于DCT子带相似度的减参图像质量评估

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498930

Amnon Balanov, Arik Schwartz, Y. Moshe

引用次数: 10

MPEG DASH - some QoE-based insights into the tradeoff between audio and video for live music concert streaming under congested network conditions MPEG DASH——在拥挤的网络条件下，对现场音乐会流媒体的音频和视频之间权衡的一些基于qos的见解

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498958

Rafael Rodrigues, P. Počta, H. Melvin, Manuela Pereira, A. Pinheiro

{"title":"MPEG DASH - some QoE-based insights into the tradeoff between audio and video for live music concert streaming under congested network conditions","authors":"Rafael Rodrigues, P. Počta, H. Melvin, Manuela Pereira, A. Pinheiro","doi":"10.1109/QoMEX.2016.7498958","DOIUrl":"https://doi.org/10.1109/QoMEX.2016.7498958","url":null,"abstract":"The rapid adoption of MPEG-DASH is testament to its core design principles that enable the client to make the informed decision relating to media encoding representations, based on network conditions, device type and preferences. Typically, the focus has mostly been on the different video quality representations rather than audio. However, for device types with small screens, the relative bandwidth budget difference allocated to the two streams may not be that large. This is especially the case if high quality audio is used, and in this scenario, we argue that increased focus should be given to the bit rate representations for audio. Arising from this, we have designed and implemented a subjective experiment to evaluate and analyses the possible effect of using different audio quality levels. In particular, we investigate the possibility of providing reduced audio quality so as to free up bandwidth for video under certain conditions. Thus, the experiment was implemented for live music concert scenarios transmitted over mobile networks, and we suggest that the results will be of significant interest to DASH content creators when considering bandwidth tradeoff between audio and video.","PeriodicalId":6645,"journal":{"name":"2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX)","volume":"111 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":"79190489","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

Visual quality assessment of reconstructed background images 重建背景图像的视觉质量评价

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498954

Aditee Shrotre, Lina Karam

引用次数: 2

A bag of words description scheme based on SSIM for image quality assessment 一种基于SSIM的图像质量评价的词包描述方案

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498957

Miguel Fidalgo-Fernandes, Marco V. Bernardo, A. Pinheiro

引用次数: 3

3D-HEVC visual quality assessment: Database and bitstream model 3D-HEVC视觉质量评估:数据库和比特流模型

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498946

Wei Zhou, Ning Liao, Zhibo Chen, Weiping Li

引用次数: 14

Closing the gap: Visual quality assessment considering viewing conditions 缩小差距:考虑观看条件的视觉质量评估

2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX) Pub Date : 2016-06-06 DOI: 10.1109/QoMEX.2016.7498927

Yucheng Zhu, Guangtao Zhai, Ke Gu, Zhaohui Che

{"title":"Closing the gap: Visual quality assessment considering viewing conditions","authors":"Yucheng Zhu, Guangtao Zhai, Ke Gu, Zhaohui Che","doi":"10.1109/QoMEX.2016.7498927","DOIUrl":"https://doi.org/10.1109/QoMEX.2016.7498927","url":null,"abstract":"Most of existing visual quality assessment algorithms are tested on standard databases that are created in controlled viewing conditions (e.g. display device, viewing distance and lighting). This implies that all the recoded subjective scores are only valid for the specific settings used in the database. However, with the prevalence of mobile devices, the practical viewing environments can significantly vary from moment to moment. It is our daily experience that the same image can look drastically different on dissimilar devices under changed viewing distance and/or lighting conditions. In other words, a gap exists between the eyes and the visual contents behind the screen in current research of quality assessment. Therefore, in this work, we perform subjective quality evaluation with varied actual viewing conditions. To make the research reproducible, we build a prototype system to record what the eyes really see from the screen and construct the viewing environment-changed image database. The database will be made available to the public. Meanwhile we design a dedicated effective environment-assessing algorithm. We believe that this work will benefit the research of visual quality assessment towards more practical applications.","PeriodicalId":6645,"journal":{"name":"2016 Eighth International Conference on Quality of Multimedia Experience (QoMEX)","volume":"122 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":"73754291","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