Minimisation of video downstream bit rate for large scale immersive video conferencing by utilising the perceptual variations of quality

Pourashraf, P; Safaei, F; Franklin, DR

Minimisation of video downstream bit rate for large scale immersive video conferencing by utilising the perceptual variations of quality

Pourashraf, P Safaei, F Franklin, DR

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Publication Type:: Conference Proceeding
Citation:: Proceedings - IEEE International Conference on Multimedia and Expo, 2014, 2014-September (Septmber)
Issue Date:: 2014-09-03

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Field	Value	Language
dc.contributor.author	Pourashraf, P	en_US
dc.contributor.author	Safaei, F	en_US
dc.contributor.author	Franklin, DR https://orcid.org/0000-0002-9563-5943	en_US
dc.date.issued	2014-09-03	en_US
dc.identifier.citation	Proceedings - IEEE International Conference on Multimedia and Expo, 2014, 2014-September (Septmber)	en_US
dc.identifier.issn	1945-7871	en_US
dc.identifier.uri	http://hdl.handle.net/10453/121602
dc.description.abstract	© 2014 IEEE. This paper aims at minimising the video downstream bit rate of immersive video conferencing (IVC) applications by judiciously modifying the video quality based on the relative virtual positions of participants in the virtual environment. The paper reports on the results of a user study to assess the influence of participants' perspectives on the perceptual impact of relevant video parameters, such as resolution and frame rate. A mathematical model for video rate is proposed that expresses the total rate as the product of spatial resolution and frame rate. Results from the user study are combined with the proposed model to predict the rate parameters which will result in perceptually acceptable quality for a given user perspective. The simulation results show that by exploiting the proposed method, the downstream network load for the client can be significantly reduced with little or no impact on the perceived quality.	en_US
dc.relation.ispartof	Proceedings - IEEE International Conference on Multimedia and Expo	en_US
dc.relation.isbasedon	10.1109/ICME.2014.6890152	en_US
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Minimisation of video downstream bit rate for large scale immersive video conferencing by utilising the perceptual variations of quality	en_US
dc.type	Conference Proceeding
utslib.citation.volume	Septmber	en_US
utslib.citation.volume	2014-September	en_US
utslib.for	080503 Networking and Communications	en_US
utslib.for	080305 Multimedia Programming	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	open_access	*
pubs.issue	Septmber	en_US
pubs.publication-status	Published	en_US
pubs.volume	2014-September	en_US

Abstract:

© 2014 IEEE. This paper aims at minimising the video downstream bit rate of immersive video conferencing (IVC) applications by judiciously modifying the video quality based on the relative virtual positions of participants in the virtual environment. The paper reports on the results of a user study to assess the influence of participants' perspectives on the perceptual impact of relevant video parameters, such as resolution and frame rate. A mathematical model for video rate is proposed that expresses the total rate as the product of spatial resolution and frame rate. Results from the user study are combined with the proposed model to predict the rate parameters which will result in perceptually acceptable quality for a given user perspective. The simulation results show that by exploiting the proposed method, the downstream network load for the client can be significantly reduced with little or no impact on the perceived quality.

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http://hdl.handle.net/10453/121602