NDLI: Enhancement of the SAAM Driving Simulator Graphics Pipeline for Speed Perception Studies

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Colombet, Florent Paillot, Damien Me´rienne, Fre´de´ric Kemeny, Andras
Copyright Year	2011
Abstract	This paper presents a speed perception study focusing on the impact of a visual scale factor. This factor corresponds to the ratio between the geometric field of view (of the camera) and the driver’s field of view covered by the screen. 20 participants have reproduced 2 speeds (50 and 90 km/h) without knowing the numerical values of these consigns, and with 5 different visual scale factors: 0.70, 0.85, 1.00, 1.15 and 1.30. We show that this visual factor has a significant impact on the speed reached by the subjects and that the variation of perceived speed can be deducted from the used visual scale factor. To be able to conduct this experiment, we had first to solve an image correction issue. As the visual display is projected on a cylindrical screen, a distortion correction must be performed. This correction is dependent on the viewer’s position and so is also dependent on the visual scale factor. We had then to improve our image warping approach to be able to take into account in real time the observer’s position (which was not the case until now). This paper presents a concise state of the art about image correction and some details about the implementation of the chosen algorithm.
Starting Page	77
Ending Page	85
Page Count	9
File Format	PDF
ISBN	9780791844328
DOI	10.1115/WINVR2011-5579
Conference Proceedings	ASME 2011 World Conference on Innovative Virtual Reality
Language	English
Publisher Date	2011-06-27
Publisher Place	Milan, Italy
Access Restriction	Subscribed
Subject Keyword	Driving simulation Image warping Speed perception Virtual reality Pixel shader Algorithms Simulation Pipelines Warping
Content Type	Text
Resource Type	Article

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