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Telepresence Quality
Norwegian University of Science and Technology, Faculty of Information Technology, Mathematics and Electrical Engineering, Department of Telematics.
2012 (English)MasteroppgaveStudent thesis
Abstract [en]

Nowadays, one of the aims of telepresence systems is to provide a sensation of nearness to people who are interacting with this type of systems. Many factors have a relevant repercussion in providing this feeling and some aspects are more important than others, depending on the scope of use. This thesis presents several studies made in order to analyse the degree of importance each factor has. One of these factors treated is the delay which limits the interactivity. For this reason, in this thesis, a method is proposed to measure the delay through a telepresence system. Another factor treated has been the frame rate in order to figure out which is its influence. In addition, an stereoscopic 3D setup was performed to analyse the degree of perceived depth which was introduced into the system. Finally, several pilot tests focused on musical rehearsals were made to evaluate the influence of the delay. The recording was made at 60fps in a high-definition quality. Subjective opinions about the interactivity and perception of this sort of systems were gathered. It was concluded that this sort of system was viable for interactive applications like conducting a choir, but an effort must be done when decreasing the amount of delay added by end devices. In fact, the conductor tolerated a delay (round-trip) about 118ms in rhythmic music, being still possible to conduct with difficulties. In contrast, the delay tolerance increased up to 160ms when conducting a more melodic piece of music. However, the use of 3D when there is more than one viewer does not produce much benefits. Instead of that, it is proposed to analyse multi-view systems as a future research.

Place, publisher, year, edition, pages
Institutt for telematikk , 2012. , 119 p.
Keyword [no]
ntnudaim:7490, MSTCNNS Master of Telematics - Communication Networks and Networked Services (2 year), Tjenester og systemutvikling
URN: urn:nbn:no:ntnu:diva-18617Local ID: ntnudaim:7490OAI: diva2:566130
Available from: 2012-11-08 Created: 2012-11-08

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