Large-scale immersive video conferencing by altering video quality and distribution based on the virtual context

Safaei, F; Pourashraf, P; Franklin, D

Large-scale immersive video conferencing by altering video quality and distribution based on the virtual context

Safaei, F Pourashraf, P Franklin, D

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Publication Type:: Journal Article
Citation:: IEEE Communications Magazine, 2014, 52 (8), pp. 66 - 72
Issue Date:: 2014-01-01

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Field	Value	Language
dc.contributor.author	Safaei, F	en_US
dc.contributor.author	Pourashraf, P	en_US
dc.contributor.author	Franklin, D https://orcid.org/0000-0002-9563-5943	en_US
dc.date.issued	2014-01-01	en_US
dc.identifier.citation	IEEE Communications Magazine, 2014, 52 (8), pp. 66 - 72	en_US
dc.identifier.issn	0163-6804	en_US
dc.identifier.uri	http://hdl.handle.net/10453/121560
dc.description.abstract	Current video conferencing applications do not scale to support a large number of participants. This article describes an IVC system that combines the best attributes of video conferencing and multi-user virtual environments. It is shown that each participant of IVC has a virtual context that is defined by his/her perspective and perception about the quality and relevance of video and audio of others. The virtual context determines both the visibility status and the required quality of videos of participants. This information can be used to dynamically alter the multicast trees that are formed among clients for the purpose of multimedia dissemination so that only the relevant videos are transmitted to end users. In addition, it is possible to reduce the video quality of a given user in response to the virtual context without the degradation having any perceptual impact. The combination of these factors reduces the required upload and download bandwidth of clients by more than 90 percent on average, making IVC highly scalable to support very large gatherings. © 2014 IEEE.	en_US
dc.relation.ispartof	IEEE Communications Magazine	en_US
dc.relation.isbasedon	10.1109/MCOM.2014.6871672	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Networking & Telecommunications	en_US
dc.title	Large-scale immersive video conferencing by altering video quality and distribution based on the virtual context	en_US
dc.type	Journal Article
utslib.citation.volume	8	en_US
utslib.citation.volume	52	en_US
utslib.for	080503 Networking and Communications	en_US
utslib.for	080305 Multimedia Programming	en_US
utslib.for	0805 Distributed Computing	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
utslib.for	1005 Communications Technologies	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CRIN - Realtime Information Networks
utslib.copyright.status	closed_access	*
pubs.issue	8	en_US
pubs.publication-status	Published	en_US
pubs.volume	52	en_US

Abstract:

Current video conferencing applications do not scale to support a large number of participants. This article describes an IVC system that combines the best attributes of video conferencing and multi-user virtual environments. It is shown that each participant of IVC has a virtual context that is defined by his/her perspective and perception about the quality and relevance of video and audio of others. The virtual context determines both the visibility status and the required quality of videos of participants. This information can be used to dynamically alter the multicast trees that are formed among clients for the purpose of multimedia dissemination so that only the relevant videos are transmitted to end users. In addition, it is possible to reduce the video quality of a given user in response to the virtual context without the degradation having any perceptual impact. The combination of these factors reduces the required upload and download bandwidth of clients by more than 90 percent on average, making IVC highly scalable to support very large gatherings. © 2014 IEEE.

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http://hdl.handle.net/10453/121560