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Inria / Raweb 2004
Team: i3D

Team : i3d

Section: New Results


Investigation of the Pseudo-Haptic Multisensory (visuo-haptic) Conflict

Participants : Michael Alleon, Christophe Arbez, Thibault Prados, Marco Congedo, Sabine Coquillart.

This work lies in a research axis aiming at simulating low cost force feedback. It is the prolongation of previous years research on pseudo-haptic force feedback [16][15]. It was shown that it is possible to simulate springs stiffness making use of an illusion generated by coupling a visual feedback and a force sensor. A similar result was also demonstrated, last year, for torque feedback [2].

During this research, an important variation of subjects sensitivity to pseudo-haptic force feedback was noted. The purpose of this new study is to caracterize these variations. One hypothesis is an influence of the subject exploration strategy. In the framework of the ECOVIA-ROBEA project, we are studying the influence of the exploration strategy on subjects' sensibility to pseudo-haptic force feedback.

For this goal, a computer program which makes use of a PHANToM (Sensable Technology) haptic device has been developed. This device allows to simulate various springs, either physically correct or not. The program allows to make comparisons of two springs: a reference one which is physically correct (the force and the visual feedback follow the same Hooke law), and a comparison one with a haptic stiffness different of its visual stiffness (the force feedback and the visual feedback follow two different Hooke laws). This program will soon be used to conduct psychophysical experiments in order to study the variation of subject sensitivity by varying the subjects exploration strategy.


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