The use of stereographic systems is spreading out in modern society, from the revolution of cinematography to its adoption in high-tech products such as portable gaming devices or photo cameras. However, the fruition of immersive stereographic systems by more than one person at a time is still a research issue. In more detail, the class of passive stereo systems presents technological limitations of displaying correct multiuser perspectives. In fact, the stereo image projected onto the screen is usually rendered according to a unique point of view (PoV). Nevertheless, in multiuser systems, the selection of an appropriate PoV can minimize both optical discomfort and perspective distortion. This paper aims to evaluate which among existing PoV calculation methods provides the best performances in terms of projection realism, optical comfort and overall system usability in multiuser passive stereo systems. The performances have been evaluated in three different "distance" scenarios to take into account also the effects of binocular disparity in the PoV calculation. To accomplish this objective, we administered a questionnaire to nine couple subjects, evaluating each of the investigated PoV calculation methods for each of the three distance scenarios. Copyright © 2013 John Wiley & Sons, Ltd. This paper presents a study on existing point of view (PoV) calculation approaches in the display of passive stereo images in an immersive multiuser system. We investigate which of the presented methods provide the best performances in terms of projection realism, optical comfort and overall system usability. The performances have been evaluated for three different "distance" scenarios to take into account also the effects of binocular disparity in the PoV calculation. Copyright © 2013 John Wiley & Sons, Ltd.
On multiuser perspectives in passive stereographic virtual environments
Tripicchio P.Primo
;Loconsole C.
;Piarulli A.Methodology
;Ruffaldi E.;Tecchia F.;
2014-01-01
Abstract
The use of stereographic systems is spreading out in modern society, from the revolution of cinematography to its adoption in high-tech products such as portable gaming devices or photo cameras. However, the fruition of immersive stereographic systems by more than one person at a time is still a research issue. In more detail, the class of passive stereo systems presents technological limitations of displaying correct multiuser perspectives. In fact, the stereo image projected onto the screen is usually rendered according to a unique point of view (PoV). Nevertheless, in multiuser systems, the selection of an appropriate PoV can minimize both optical discomfort and perspective distortion. This paper aims to evaluate which among existing PoV calculation methods provides the best performances in terms of projection realism, optical comfort and overall system usability in multiuser passive stereo systems. The performances have been evaluated in three different "distance" scenarios to take into account also the effects of binocular disparity in the PoV calculation. To accomplish this objective, we administered a questionnaire to nine couple subjects, evaluating each of the investigated PoV calculation methods for each of the three distance scenarios. Copyright © 2013 John Wiley & Sons, Ltd. This paper presents a study on existing point of view (PoV) calculation approaches in the display of passive stereo images in an immersive multiuser system. We investigate which of the presented methods provide the best performances in terms of projection realism, optical comfort and overall system usability. The performances have been evaluated for three different "distance" scenarios to take into account also the effects of binocular disparity in the PoV calculation. Copyright © 2013 John Wiley & Sons, Ltd.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.