The manipulation of a virtual object by means of a digital glove is a tedious task for repetitive position and orientation adjustments. In this paper we try to overcome the lack of force feedback of general purpose digital gloves. We propose a solution based only on the interpretation of instantaneous hand posture variations. From this knowledge, a virtual contact model analog to the Coulomb law allows to evaluate the instantaneous nature of the contact, firm or sliding, between virtual sensors attached to the fingers and the virtual object. Although no force feedback is supplied, we are able to derive a visual restitution consistent with the user manipulative intentions while respecting the integrity of solid interaction with friction.
This paper proposes a general framework to enhance grasping interactions of an operator wearing a digital glove. We focus on a consistent interpretation of the posture information acquired with the glove in order to reflect the grasp of virtual artifacts. This allows manipulations requiring a higher skill in virtual environment and also improve interactions with virtual human models. A handshake case-study highlights the application range of this methodology.
We investigate how the movement measurement technologies developed for Virtual Reality applications can be applied to track in real-time the full body posture of a human being. The accuracy of this information is of definite importance to evaluate the feasibility of complex tasks involving human beings. We present a full body movement measurement approach. It provides a realistic conversion in real-time with a reasonable number of sensors. Associated with the hand movement measurement and correction algorithms we provide a pertinent visual and vibrotactile feedback to the performer.
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