Visual Scale Factor for Speed Perception
TypeArticles dans des revues avec comité de lecture
Speed perception is an important task depending mainly on optic flow that the driver must perform continuously to control his/her vehicle. Unfortunately it appears that in some driving simulators speed perception is under estimated, leading into speed production higher than in real conditions. Perceptual validity is then not good enough to study driver’s behavior. To solve this problem, a technique has recently seen the light, which consists of modifying the geometric field of view (GFOV) while keeping the real field of view (FOV) constant. We define our visual scale factor as the ratio between the GFOV and the FOV. The present study has been carried out on the SAAM dynamic driving simulator and aims at determining the precise effect of this visual scale factor on the speed perception. 20 subjects have reproduced 2 speeds (50 km/h and 90 km/h) without knowing the numerical values of these consigns, with 5 different visual scale factors: 0.70, 0.85, 1.00, 1.15 and 1.30. We show that speed perception significantly increases when the visual factor increases. A 0.15 modification of this factor is enough to obtain a significant effect. Furthermore, the relative variation of the speed perception is proportional to the visual scale factor. Besides, the modification of the geometric field of view remained unnoticed by all the subjects, which implies that this technique can be easily used to make drivers reduce their speed in driving simulation conditions. However, this technique may also modify perception of distances.
Files in this item
Showing items related by title, author, creator and subject.
COLOMBET, Florent; PAILLOT, Damien; MERIENNE, Frédéric; KEMENY, Andras (INRETS, 2010)This paper deals with changes of the geometric field of view on speed perception. This study has been carried out using the SAAM dynamic driving simulator (Arts et Métiers ParisTech). SAAM provides motion cues thanks to a ...
KEMENY, Andras; GEORGE, Paul; MERIENNE, Frédéric; COLOMBET, Florent (Society for Imaging Science and Technology, 2017)In nowadays state of the art VR environments, displayed in CAVEs or HMDs, navigation technics may frequently induce cybersickness or VR-Induced Symptoms and Effects (VRISE), drastically limiting the friendly use of VR ...
Evaluation of Smartphone-based interaction techniques in a CAVE in the context of immersive digital project review GEORGE, Paul; KEMENY, Andras; COLOMBET, Florent; MERIENNE, Frédéric; CHARDONNET, Jean-Rémy; MOUTTAPA THOUVENIN, Indira (SPIE, 2014)Immersive digital project reviews consist in using virtual reality (VR) as a tool for discussion between various stakeholders of a project. In the automotive industry, the digital car prototype model is the common thread ...
Influence of Inertial Stimulus on Visuo-Vestibular Cues Conflict for Lateral Dynamics at Driving Simulators AYKENT, Baris; MERIENNE, Frédéric; PAILLOT, Damien; KEMENY, Andras (OMICS Publishing Group, 2013)This paper explains the effect of having an inertial stimulus (motion platform) for driving simulators on proximity to the reality for the sensed lateral dynamics with respect to the measurements and the perceptual fidelity ...
The Influence of the feedback control of the hexapod platform of the SAAM dynamic driving simulator on neuromuscular dynamics of the drivers AYKENT, Baris; PAILLOT, Damien; MERIENNE, Frédéric; KEMENY, Andras (DSC, 2012-09-06)Simulation has been an increasingly important tool for the development and evaluation of vehicle systems [Kol20]. Driving simulators offer the benefit of reducing development efforts, time and costs for many applications. ...