Showing papers by "Andras Kemeny published in 2003"
TL;DR: Recent psychophysical studies have revealed an unexpectedly important contribution of vestibular cues in distance perception and steering, prompting a re-evaluation of the role of visuo-vestibular interaction in driving simulation studies.
381 citations
01 Jan 2003
TL;DR: In this paper, a preliminary study on the role of torque feedback in the steering wheel that was conducted on the Clio dynamic driving simulator at RENAULT was conducted to evaluate the potential of driving simulators in the study of future steer-by-wire systems.
Abstract: This paper describes a preliminary study on the role of torque feedback in the steering wheel that was conducted on the Clio dynamic driving simulator at RENAULT. An experiment comparing different torque feedback strategies was conducted to evaluate the potential of driving simulators in the study of future steer-by-wire systems. The results indicate that drivers on the simulator can control their vehicles in curves with quite different torque feedback strategies, either linear or non-linear. However, zero torque or inverted torque feedback makes driving almost impossible. These observations confirm the essential role of coherent haptic information for driving real cars and simulators, and also suggest the existence of driver adaptation mechanisms in steering control.
46 citations
TL;DR: It is concluded that human subjects specify and store forces to be applied by the hand not in terms of a perceived force vector, but rather in Terms of the motor activity required to resist or produce the force-i.e., subjects possess a multi-dimensional "sense of effort."
Abstract: In this study, we evaluated the capacity of human beings to perceive and reproduce forces applied to the hand. We tested for perceptive distortions and/or privileged directions in the performance o...
45 citations
12 Jun 2003
TL;DR: An ecological model of glittering texture is proposed and glitter perception is analyzed in terms of variations of texture luminance and animation frequency, in dynamic illumination conditions.
Abstract: The perceptual effects of changes of texture luminance either between the eyes or over time have been studied in several experiments and have led to a better comprehension of phenomenons such as sieve effect, binocular and monocular lustre and rivaldepth.
In this paper, we propose an ecological model of glittering texture and analyze glitter perception in terms of variations of texture luminance and animation frequency, in dynamic illumination conditions. Our approach is based on randomly oriented mirrors that are computed according to the specular term of Phong's image rendering formula. The sparkling effect is thus correlated to the relative movements of the resulting textured object, the light array and the observer's point of view.
The perceptual effect obtained with this model depends on several parameters: mirrors' density, the Phong specular exponent and the statistical properties of the mirrors' normal vectors. The ability to independently set these properties offers a way to explore a characterization space of glitter. A rating procedure provided a first approximation of the numerical values that lead to the best feeling of typical sparkling surfaces such as metallic paint, granite or sea shore.
1 citations