Filters








5,545 Hits in 6.1 sec

Measurement Study of Multi-party Video Conferencing [chapter]

Yue Lu, Yong Zhao, Fernando Kuipers, Piet Van Mieghem
2010 Lecture Notes in Computer Science  
This work is, to our knowledge, the first measurement work to study and compare mechanisms and performance of existing free multi-party video conferencing systems.  ...  More and more free multi-party video conferencing applications are readily available over the Internet and both Server-to-Client (S/C) or Peer-to-Peer (P2P) technologies are used.  ...  Acknowledgements We would like to thank Rob Kooij for a fruitful discussion on measuring audio delay. This work has been supported by TRANS (http://www.trans-research.nl).  ... 
doi:10.1007/978-3-642-12963-6_8 fatcat:x5cw4a7ebzb5lgk5nkw4jubruu

Video Telephony for End-Consumers: Measurement Study of Google+, iChat, and Skype

Yang Xu, Chenguang Yu, Jingjiang Li, Yong Liu
2014 IEEE/ACM Transactions on Networking  
In this paper, we present our measurement study on three popular video telephony systems: iChat, Google+, and Skype.  ...  Through a series of carefully designed passive and active measurements, we are able to unveil important information about their design choices and performance, including application architecture, video  ...  MEASUREMENT PLATFORM Our video telephony measurement effort was initiated in December 2010, right after Skype introduced its beta service of multi-party video conferencing.  ... 
doi:10.1109/tnet.2013.2260354 fatcat:jnyfj7qonvathp7uxfaedroewy

Video telephony for end-consumers

Yang Xu, Chenguang Yu, Jingjiang Li, Yong Liu
2012 Proceedings of the 2012 ACM conference on Internet measurement conference - IMC '12  
In this paper, we present our measurement study on three popular video telephony systems: iChat, Google+, and Skype.  ...  Through a series of carefully designed passive and active measurements, we are able to unveil important information about their design choices and performance, including application architecture, video  ...  MEASUREMENT PLATFORM Our video telephony measurement effort was initiated in December 2010, right after Skype introduced its beta service of multi-party video conferencing.  ... 
doi:10.1145/2398776.2398816 dblp:conf/imc/XuYLL12 fatcat:aaykcm6svfgwrighwbyetcapgm

Multi-rate peer-to-peer video conferencing: A distributed approach using scalable coding

Miroslav Ponec, Sudipta Sengupta, Minghua Chen, Jin Li, Philip A. Chou
2009 2009 IEEE International Conference on Multimedia and Expo  
We consider multi-rate peer-to-peer multi-party conferencing applications, where different receivers in the same group can receive videos at different rates using, for example, scalable layered coding.  ...  The quality of video received by each receiver can be modeled as a concave utility function of the video rate.  ...  INTRODUCTION AND MOTIVATION Providing Quality-of-Service (QoS) in P2P multi-party conferencing (Voice and/or video conferencing) applications is challenging.  ... 
doi:10.1109/icme.2009.5202767 dblp:conf/icmcs/PonecSCLC09 fatcat:pvizilzrgvacjmfvdnjjy4soua

Exploring spatialized audio & video for distributed conversations

Kori Inkpen, Rajesh Hegde, Mary Czerwinski, Zhengyou Zhang
2010 Proceedings of the 2010 ACM conference on Computer supported cooperative work - CSCW '10  
Previous work has demonstrated the benefits of spatial audio conferencing over monophonic when listening to a group conversation.  ...  The results of this work are important in that they provide strong evidence for continued exploration of spatialized video, and also suggest that the benefits of spatialized audio may have less of an impact  ...  System We used an in-house multi-party video conferencing system for this study. A schematic diagram of this video conferencing system is shown in Figure 1 .  ... 
doi:10.1145/1718918.1718936 dblp:conf/cscw/InkpenHCZ10 fatcat:7d6f636fijgb7lfqt2zygcpd7q

Wireless Multi-party video conferencing with network coding

Hui Wang, Ronald Y. Chang, C.-C. Jay Kuo
2009 2009 IEEE International Conference on Multimedia and Expo  
Videos conferencing is a method of group discussion that finds applications in real time situation for the purpose of achieving a certain objectives.  ...  In this paper we investigate the performance metrics that affect video conferencing over wireless network with a view of addressing some crucial issues involved.  ...  Video-conferencing enabled meetings happen in either point-to-point or with multi-point.In point-to-point, one person or group is connected to another [2] .In multi-point video conferencing, more locations  ... 
doi:10.1109/icme.2009.5202786 dblp:conf/icmcs/WangCK09 fatcat:fxcf6et2rnh3ha2oxp4pahycya

Optimizing Multi-Rate Peer-to-Peer Video Conferencing Applications

Miroslav Ponec, Sudipta Sengupta, Minghua Chen, Jin Li, Philip A. Chou
2011 IEEE transactions on multimedia  
We consider multi-rate peer-to-peer multi-party video conferencing applications, where different receivers in the same group can receive videos at different rates using, for example, scalable layered coding  ...  The quality of video received by each receiver can be modeled as a concave utility function of the video bitrate.  ...  In multi-party conferencing scenarios, the utility function itself can depend on the nature of the video source and the receivers.  ... 
doi:10.1109/tmm.2011.2161759 fatcat:rtx77yyqbvh77e2johkirscsim

The contrast effect: QoE of mixed video-qualities at the same time

Marwin Schmitt, Dick C. A. Bulterman, Pablo S. Cesar
2018 Quality and User Experience  
In desktop multi-party video-conferencing videostreams of participants are delivered in different qualities, but we know little about how such composition of the screen affects the quality of experience  ...  To answer these questions we conducted a crowdsourcing study, in which we gathered over 5000 perceived quality ratings of overall sessions and individual streams.  ...  multi-party conferencing [64] .  ... 
doi:10.1007/s41233-018-0020-2 fatcat:fab3xwl2vfhsfbpz3ouh4uacri

A Scalable Distributed Architecture for Multi-party Conferencing Using SIP [chapter]

Young-Hoon Cho, Moon-Sang Jeong, Jong-Tae Park
2004 Lecture Notes in Computer Science  
However, the model and architecture of multi-party conferencing which is currently being standardized by IETF has some limitation in scalability to meet the requirement for the management of large-scale  ...  multimedia conferencing service.  ...  , and multi-party conferencing.  ... 
doi:10.1007/978-3-540-30141-7_52 fatcat:filbvs6iojf4faop2gcsdykelm

vSkyConf: Cloud-assisted Multi-party Mobile Video Conferencing [article]

Yu Wu, Chuan Wu, Bo Li, Francis C.M. Lau
2013 arXiv   pre-print
In this paper, we present vSkyConf, a cloud-assisted mobile video conferencing system to fundamentally improve the quality and scale of multi-party mobile video conferencing.  ...  However, how to provision high-quality, multi-party video conferencing experiences over mobile devices is still an open challenge.  ...  , which makes it challenging to use mobile devices for multi-party video conferencing  ... 
arXiv:1303.6076v1 fatcat:c4foha3kqngy5eup5ctfcpwf24

Utility maximization in peer-to-peer systems

Minghua Chen, Miroslav Ponec, Sudipta Sengupta, Jin Li, Philip A. Chou
2008 Proceedings of the 2008 ACM SIGMETRICS international conference on Measurement and modeling of computer systems - SIGMETRICS '08  
To support this claim, we have implemented the Primal-dual algorithm for use in a peer-assisted multi-party conferencing system and evaluated its performance through actual experiments on a LAN testbed  ...  In this paper, we study the problem of utility maximization in P2P systems, in which aggregate applicationspecific utilities are maximized by running distributed algorithms on P2P nodes, which are constrained  ...  Multi-party conferencing is one of the applications of our work.  ... 
doi:10.1145/1375457.1375477 dblp:conf/sigmetrics/ChenPSLC08 fatcat:weynktxkq5au3jtcaozqnywpma

vSkyConf

Yu Wu, Chuan Wu, Bo Li, Francis C.M. Lau
2013 Proceedings of the second ACM SIGCOMM workshop on Mobile cloud computing - MCC '13  
In this paper, we present vSkyConf, a cloud-assisted mobile video conferencing system to fundamentally improve the quality and scale of multi-party mobile video conferencing.  ...  However, how to provision high-quality, multi-party video conferencing experiences over mobile devices is still an open challenge.  ...  in the session, leading to significant challenge when using mobile devices for multi-party video conferencing  ... 
doi:10.1145/2491266.2491273 dblp:conf/sigcomm/WuWLL13 fatcat:wdxryc75zrfzzmufcgvfevfuuq

Utility maximization in peer-to-peer systems

Minghua Chen, Miroslav Ponec, Sudipta Sengupta, Jin Li, Philip A. Chou
2008 Performance Evaluation Review  
To support this claim, we have implemented the Primal-dual algorithm for use in a peer-assisted multi-party conferencing system and evaluated its performance through actual experiments on a LAN testbed  ...  In this paper, we study the problem of utility maximization in P2P systems, in which aggregate applicationspecific utilities are maximized by running distributed algorithms on P2P nodes, which are constrained  ...  Multi-party conferencing is one of the applications of our work.  ... 
doi:10.1145/1384529.1375477 fatcat:khwjrwqqbbdo3eeqa3epx6fciu

Enabling 'togetherness' in high-quality domestic video

Ian Kegel, Pablo Cesar, Jack Jansen, Dick C.A. Bulterman, Tim Stevens, Joke Kort, Nikolaus Färber
2012 Proceedings of the 20th ACM international conference on Multimedia - MM '12  
Low-cost video conferencing systems have provided an existence proof for the value of video communication in a home setting.  ...  In our work, we describe the development, implementation and evaluation of a domestic video conferencing system that is geared to providing true 'togetherness' among conference participants.  ...  ACKNOWLEDGEMENTS The authors would like to acknowledge the support of Orlando  ... 
doi:10.1145/2393347.2393375 dblp:conf/mm/KegelCJBSKF12 fatcat:ylyooz7m3fhxtiluwqz2zogmuq

Towards Individual QoE for Multiparty Videoconferencing

Marwin Schmitt, Judith Redi, Dick Bulterman, Pablo S. Cesar
2018 IEEE transactions on multimedia  
Index Terms-Multi-Party video conferencing, Quality of Experience, Over-the-top, subjective quality, quality metrics, user study  ...  To this end we conducted an empirical study where groups of 4 people collaboratively build a Lego® model over a video-conferencing system.  ...  Cisco is reporting a growth in desktop video conferencing 1 ; Skype reports that multi-party (group) video conferencing is especially on the rise 2 .  ... 
doi:10.1109/tmm.2017.2777466 fatcat:ipiywabo6jgn7bsonyqgc7gayi
« Previous Showing results 1 — 15 out of 5,545 results