2010 18th International Packet Video Workshop最新文献_第3页

A contribution-aware multiple parent overlay network for P2P media streaming 一个用于P2P流媒体的贡献感知多父覆盖网络

2010 18th International Packet Video Workshop Pub Date : 2010-12-01 DOI: 10.1109/PV.2010.5706828

S. Awiphan, Zhou Su, J. Katto

引用次数: 3

Enhanced intra coding with joint line and pixel prediction 增强内部编码与联合线和像素预测

2010 18th International Packet Video Workshop Pub Date : 2010-12-01 DOI: 10.1109/PV.2010.5706822

Li Zhang, Siwei Ma, Wen Gao

引用次数: 1

Rate control and stream adaptation for scalable video streaming over multiple access networks 多址网络上可扩展视频流的速率控制和流适应

2010 18th International Packet Video Workshop Pub Date : 2010-12-01 DOI: 10.1109/PV.2010.5706817

Cheng-Hsin Hsu, N. Freris, J. Singh, Xiaoqing Zhu

{"title":"Rate control and stream adaptation for scalable video streaming over multiple access networks","authors":"Cheng-Hsin Hsu, N. Freris, J. Singh, Xiaoqing Zhu","doi":"10.1109/PV.2010.5706817","DOIUrl":"https://doi.org/10.1109/PV.2010.5706817","url":null,"abstract":"In a multihomed video streaming system, a video sequence is simultaneously transmitted over multiple access networks to a client. In this paper, we formulate the rate control and stream adaptation problems into a unified optimization problem, which determines the sending rates of individual networks, selects which video packets to transmit, and assigns each packet to an access network. We propose two heuristic algorithms with a trade-off between optimality and computational complexity. One of the proposed algorithms runs faster, while the other one results in better video quality. We propose a hybrid algorithm that demonstrates a good balance between optimality and computational complexity. We conduct extensive packet-level simulations to evaluate our algorithms using real network conditions and actual scalable video streams. We compare our algorithms against the rate control algorithms defined in the Datagram Congestion Control Protocol (DCCP) standard. The simulation results show that our algorithms significantly outperform current systems while being TCP-friendly. Our algorithms achieve at least 10 dB quality improvement over DCCP and result in up to 83% packet delivery delay reduction.","PeriodicalId":339319,"journal":{"name":"2010 18th International Packet Video Workshop","volume":"91 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":"116429895","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: 13

Perceptual video quality assessment on a mobile platform considering both spatial resolution and quantization artifacts 考虑空间分辨率和量化伪影的移动平台感知视频质量评估

2010 18th International Packet Video Workshop Pub Date : 2010-12-01 DOI: 10.1109/PV.2010.5706839

Yuanyi Xue, Yen-Fu Ou, Zhan Ma, Yao Wang

{"title":"Perceptual video quality assessment on a mobile platform considering both spatial resolution and quantization artifacts","authors":"Yuanyi Xue, Yen-Fu Ou, Zhan Ma, Yao Wang","doi":"10.1109/PV.2010.5706839","DOIUrl":"https://doi.org/10.1109/PV.2010.5706839","url":null,"abstract":"In this paper, we investigated the impact of spatial resolution and quantization on the perceptual quality of a compressed video coded from the SVC reference software - JSVM. Two subjective quality tests have been carried out on the TI Zoom2 mobile development platform (MDP). 5 different spatial resolutions (i.e., from QCIF to 4CIF) and 4 different quantization levels (i.e., QP 22, 28, 36, 44) are chosen to create the processed video sequences (PVS) from 7 different video sources. First test focuses on the effect of spatial resolution at fixed QP 22, while second test explores the impact of both spatial resolution and quantization artifacts. Videos coded at different spatial resolutions are displayed at the full screen size of the mobile platform. We report the test results in terms of how MOS reduces as the spatial resolution decreases at constant QP, and how MOS reduces as QP increases under the same spatial resolution. We found that the dropping rate of the MOS vs. spatial resolution increases as QP increases and the dropping rate of the MOS vs. QP increases as spatial resolution reduces. In addition, the dropping rate against spatial resolution is faster when the video is changing in a lower motion speed; while the dropping rate against QP is faster when the video has less texture details. Also, the dropping rate of MOS against spatial resolution can be captured by a one-parameter falling exponential function in most of cases.","PeriodicalId":339319,"journal":{"name":"2010 18th International Packet Video Workshop","volume":"7 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":"124788899","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: 29

No reference video-quality-assessment model for video streaming services 没有视频流媒体服务的参考视频质量评估模型

2010 18th International Packet Video Workshop Pub Date : 2010-12-01 DOI: 10.1109/PV.2010.5706833

Taichi Kawano, Kazuhisa Yamagishi, Keishiro Watanabe, J. Okamoto

引用次数: 26

Adaptive HRD parameter selection for fixed delay live wireless video streaming 固定延迟无线直播视频流的自适应HRD参数选择

2010 18th International Packet Video Workshop Pub Date : 2010-12-01 DOI: 10.1109/PV.2010.5706831

R. Stapenhurst, D. Agrafiotis, J. Chung-How, J. Pledge

引用次数: 5

Joint source / channel coding forwwan multiview video multicast with cooperative peer-to-peer repair 协同点对点修复的联合源/信道编码转发多视图视频组播

2010 18th International Packet Video Workshop Pub Date : 1900-01-01 DOI: 10.1109/PV.2010.5706827

Zhi Liu, Gene Cheung, V. Velisavljevic, E. Ekmekcioglu, Yusheng Ji

{"title":"Joint source / channel coding forwwan multiview video multicast with cooperative peer-to-peer repair","authors":"Zhi Liu, Gene Cheung, V. Velisavljevic, E. Ekmekcioglu, Yusheng Ji","doi":"10.1109/PV.2010.5706827","DOIUrl":"https://doi.org/10.1109/PV.2010.5706827","url":null,"abstract":"WWAN video multicast is challenging because of unavoidable packet losses, and inability to perform retransmission per packet for every user due to the NAK implosion problem. Previously proposed cooperative peer-to-peer repair (CPR) strategy, leveraging on the broadcast nature of wireless transmission and “uncorrelatedness” of receivers' channels, calls for peers with good WWAN channels to streaming server (rich peers) to locally relay packets lost to peers with bad WWAN channels (poor peers) over a secondary ad-hoc WLAN network. In the interactive multiview video streaming (IMVS) scenario, however, where users can each periodically select one out of many available views for decoding and display, a poor peer may not have a neighboring rich peer watching the same view for packet recovery via CPR. In this paper, we propose a new CPR strategy for peers to repair lost packets to neighbors watching different views. The key idea is for server to transmit depth maps in addition to texture maps, so that lost frames in a different view can be reconstructed using depth-image-based rendering (DIBR). Like Forward Error Correction (FEC) packets, encoded depth maps incur an overhead in redundant information transmission to counter network losses, and we allocate optimal amount of bits for FEC packets (for same-view direct path protection via WWAN source) and depth map encoding (for different-view indirect path via CPR peers) to minimize expected distortion. Experimental results show our proposed CPR scheme offers a 3.4dB PSNR improvement over a non-CPR scheme that relies on FEC only.","PeriodicalId":339319,"journal":{"name":"2010 18th International Packet Video Workshop","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123135872","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