2010 18th International Packet Video Workshop最新文献

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2010 18th International Packet Video Workshop Pub Date : 2019-07-01 DOI: 10.4018/978-1-60566-414-9.chcrp

引用次数: 0

Subjective quality assessment of error concealment strategies for 3DTV in the presence of asymmetric transmission errors 不对称传输误差下3DTV错误隐藏策略的主观质量评价

2010 18th International Packet Video Workshop Pub Date : 2010-12-13 DOI: 10.1109/PV.2010.5706838

M. Barkowsky, Kun Wang, Romain Cousseau, K. Brunnstrom, R. Olsson, P. Le Callet

{"title":"Subjective quality assessment of error concealment strategies for 3DTV in the presence of asymmetric transmission errors","authors":"M. Barkowsky, Kun Wang, Romain Cousseau, K. Brunnstrom, R. Olsson, P. Le Callet","doi":"10.1109/PV.2010.5706838","DOIUrl":"https://doi.org/10.1109/PV.2010.5706838","url":null,"abstract":"The transmission of 3DTV sequences over packet based networks may result in degradations of the video quality due to packet loss. In the conventional 2D case, several different strategies are known for extrapolating the missing information and thus concealing the error. In 3D however, the residual error after concealment of one view might leads to binocular rivalry with the correctly received second view. In this paper, three simple alternatives are presented: frame freezing, a reduced playback speed, and displaying only a single view for both eyes, thus effectively switching to 2D presentation. In a subjective experiment the performance in terms of quality of experience of the three methods is evaluated for different packet loss scenarios. Error-free encoded videos at different bit rates have been included as anchor conditions. The subjective experiment method contains special precautions for measuring the Quality of Experience (QoE) for 3D content and also contains an indicator for visual discomfort. The results indicate that switching to 2D is currently the best choice but difficulties with visual discomfort should be expected even for this method.","PeriodicalId":339319,"journal":{"name":"2010 18th International Packet Video Workshop","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121639868","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: 42

On unequal error protection random linear coding for scalable video broadcasting 面向可扩展视频广播的不等错误保护随机线性编码

2010 18th International Packet Video Workshop Pub Date : 2010-12-01 DOI: 10.1109/PV.2010.5706819

D. Vukobratović, V. Stanković

引用次数: 5

Perceptual quality assessment of P2P assisted streaming video for chunk-level playback controller design 基于块级回放控制器设计的P2P辅助流视频感知质量评估

2010 18th International Packet Video Workshop Pub Date : 2010-12-01 DOI: 10.1109/PV.2010.5706826

T. Fu, W. Leung, Pak-yin Lam, D. Chiu, Zhibin Lei

引用次数: 5

Subjective experiment and modeling of whole frame packet loss visibility for H.264 H.264全帧丢包可视性的主观实验与建模

2010 18th International Packet Video Workshop Pub Date : 2010-12-01 DOI: 10.1109/PV.2010.5706837

Ting-Lan Lin, Y. Chang, P. Cosman

引用次数: 9

A recursive optimal spectral estimate of end-to-end distortion in video communications 视频通信端到端失真的递归最优频谱估计

2010 18th International Packet Video Workshop Pub Date : 2010-12-01 DOI: 10.1109/PV.2010.5706825

Jingning Han, Vinay Melkote, K. Rose

{"title":"A recursive optimal spectral estimate of end-to-end distortion in video communications","authors":"Jingning Han, Vinay Melkote, K. Rose","doi":"10.1109/PV.2010.5706825","DOIUrl":"https://doi.org/10.1109/PV.2010.5706825","url":null,"abstract":"End-to-end distortion estimation is critical to effective error-resilient video coding. The recursive optimal per-pixel estimate (ROPE) is a known approach to compute up to second moments of decoder-reconstructed pixels, and thereby optimally estimate the distortion. ROPE accurately accounts for encoding/decoding operations that are recursive in the pixel domain, and their interaction with packet loss and decoder concealment. The premise of this work is that considerable gains could be recouped by a dual estimation technique that would perform its recursion in the transform domain. This opens the door to accurate distortion estimation in conjunction with estimation-theoretic source coding approaches that involve transform domain operations, including improved prediction in both single-layer and scalable video coding. We present a novel recursive optimal estimate that operates entirely in the transform domain, namely, the spectral coefficient-wise optimal recursive estimate (SCORE). The method overcomes intricacies due to motion compensation from “off-grid” blocks. We first demonstrate that its accuracy matches ROPE in the usual setting where ROPE is known to be optimal. Then we consider an enhanced encoding scenario involving spectral operations that cannot be accurately tracked by ROPE, but for which SCORE still maintains optimality and hence enables substantial end-to-end performance gains over a large range of packet loss rates.","PeriodicalId":339319,"journal":{"name":"2010 18th International Packet Video Workshop","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116178578","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: 7

Frame-recursive block-based distortion estimation model for multiple reference frames and motion copy concealment in H.264/AVC H.264/AVC中基于帧递归分块的多参考帧失真估计模型及运动拷贝隐藏

2010 18th International Packet Video Workshop Pub Date : 2010-12-01 DOI: 10.1109/PV.2010.5706820

Werayut Saesue, Jian Zhang, C. Chou

引用次数: 2

A hybrid TCP-friendly rate control for multimedia streaming 用于多媒体流的混合tcp友好速率控制

2010 18th International Packet Video Workshop Pub Date : 2010-12-01 DOI: 10.1109/PV.2010.5706830

Tomoki Fujikawa, Yosuke Takishima, H. Ujikawa, Kazumine Ogura, J. Katto, H. Izumikawa

引用次数: 4

Network-based IP packet loss importance model for H.264 SD videos 基于网络的H.264 SD视频IP丢包重要性模型

2010 18th International Packet Video Workshop Pub Date : 2010-12-01 DOI: 10.1109/PV.2010.5706836

Y. Chang, Ting-Lan Lin, P. Cosman

引用次数: 6

Integrated H.264 region-of-interest detection, tracking and compression for surveillance scenes 集成了H.264感兴趣区域检测，跟踪和压缩监控场景

2010 18th International Packet Video Workshop Pub Date : 2010-12-01 DOI: 10.1109/PV.2010.5706815

I. Fernandez, P. R. Alface, Tong Gan, R. Lauwereins, C. De Vleeschouwer

{"title":"Integrated H.264 region-of-interest detection, tracking and compression for surveillance scenes","authors":"I. Fernandez, P. R. Alface, Tong Gan, R. Lauwereins, C. De Vleeschouwer","doi":"10.1109/PV.2010.5706815","DOIUrl":"https://doi.org/10.1109/PV.2010.5706815","url":null,"abstract":"Motion detection and tracking is an important vision topic for many applications such as video surveillance. When this process takes place during video encoding and transmission, Regions-of-Interest (RoIs) turn to be a very useful tool in order to favor the encoding of such regions compared to the fixed background. In this paper, we show that, in conjunction with effective spatio-temporal filters, H264 Motion Estimation can be efficiently used for a robust and coarse-grain detection and tracking of moving objects. The integration of the compression and detection modules enables the prediction of ROIs positions from previous frames, offering therefore tracking at a very low computational cost. In the case of high resolution sequences affected by severe quality degradation (such as improper interlacing, light reflections and camera shaking), the global video compression ratio can be dramatically improved without damaging the ROI. This is especially the case when appropriate encoding options, i.e. appropriate Flexible Macroblock Ordering (FMO) types, are exploited. Different proposals are offered to maximize the quality of the RoI facing a dynamic constraint of the network bandwidth.","PeriodicalId":339319,"journal":{"name":"2010 18th International Packet Video Workshop","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130128110","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: 10