TAILIEUCHUNG - Non-Realistic Haptic Feedback for Virtual Sculpture

The sense of feeling can effectively be used to enforce virtual artistic activities like virtual sculpting or modeling. In this paper, we describe how a virtual sculpture system has been extended with haptical feedback. In practice, we use the scalar field defining the implicit surface being modeled to efficiently compute several type of force feedback. We present a method for combining these forces differently depending whether the user is just touching his artwork or editing it by adding virtual matter. This technique enforces the in- teractivity of the task and leads to an enhanced non-tactorealistic feedback that increases the usability of the sculpture tool. The well-known problem. | IN KI A INSTITUT NATIONAL DE RECHERCHE EN INFORMATIQUE ET EN AUTOMATIQUE Non-Realistic Haptic Feedback for Virtual Sculpture Renaud Blanch Eric Ferley Marie-Paule Cani Jean-Dominique Gascuel N 5090 Janvier 2004 __THÈME 3 __ ISSN 0249-6399 ISRN INRIA RR--5090--FR ENG apport de recherche I NR. IẠ RHÔNE-ALPES Non-Realistic Haptic Feedback for Virtual Sculpture Renaud Blanch Eric Ferleyy Marie-Paule Caniz Jean-Dominique Gascuelx Thème 3 Interaction homme-machine images données connaissances Projet EVASION Rapport de recherche n 5090 Janvier 2004 15 pages Abstract The sense of feeling can effectively be used to enforce virtual artistic activities like virtual sculpting or modeling. In this paper we describe how a virtual sculpture system has been extended with haptical feedback. In practice we use the scalar field defining the implicit surface being modeled to efficiently compute several type of force feedback. We present a method for combining these forces differently depending whether the user is just touching his artwork or editing it by adding virtual matter. This technique enforces the interactivity of the task and leads to an enhanced non-tactorealistic feedback that increases the usability of the sculpture tool. The well-known problem of stability of the haptic feedback is also addressed in the particular case of implicit surface in a new simple and efficient manner. Key-words virtual sculpture haptic interaction non-realistic haptic feedback Ce travail a été effectue au sein de 1 ancien projet iMAGIS projet commun CNRS INRIA Institut National Polytechnique de Grenoble et Université Joseph Fourier dont les projets EVASION et ARTIS sont issus. Laboratoire de Recherche en Informatique INRIA Futurs - projet InSitu Pôle Commun de Recherche en Informatique du plateau de saclay CNRS École Polytechnique INRIA Université Paris-Sud. y Digisens SA - http z projet EVASION INRIA Rhone-Alpes et Laboratoire GRAVIR IMAG laboratoire commun CNRS

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