Implicit Models and Meshes – IM&M

To reach our goal, we propose to lean on the natural properties of implicit surface representations and to tackle the scientific challenges that prevent their wider practical use. We also wish to demonstrate the strength of implicit representations when they are used in conjunction with standard mesh representations in applications such as deformations (skinning, visually plausible crushing) and collision detections.

Up to now, we have finalized our implicit models for shape representations. We have also developed new composition operators, especially well adapted for shape composition, both theoretically and for their implementation. Finally, we have demonstrated the efficiency of the conjoint use of meshes and implicit surfaces (field functions) in the skinning of character joints when they are animated.

We now try to improve mesh deformations driven by implicit surfaces. We also develop new n-ary composition operators for the simultaneous composition of a large number of dynamic objects.

International journal with peer reviews :

-1- Florian Canezin et al., Adequate Inner Bound for Geometric Modeling with Compact Field Functions, Computer and Graphics, 35(5), Proc. of SMI 2013
-2- Rodolphe Vaillant et al., Implicit Skinning: Real-Time Skin Deformation with Contact Modeling, Transactions on Graphics, 32(4), Proc. of Siggraph 2013
-3- Olivier Gourmel et al., A Gradient-Based Implicit Blend, Transactions on Graphics, 32(2), 2013

National journal with peer reviews :

-1- Rodolphe Vaillant et al., Déformation de la peau d'un personnage avec prise en compte des contacts, REFIG 2012

National conference :

-1- Rodolphe Vaillant et al., Déformation de la peau d'un personnage avec prise en compte des contacts, AFIG 2012, prix du meilleur papier

The goal of this project is to develop simple and efficient tools for the geometric modeling of tri-dimensional objects. It aims at extend the accessibility of modeling and animation software to all, specially non expert users and developers. The impact of this projects for any user is important for allowing both the expression via 3D static and dynamic objects and the use of manufacturing devices such as 3D printers. To reach this goal, we propose the exploitation of the natural properties of implicit representations of 3D objects by efficiently solving their main limitations. We then, will also demonstrate the real power (in terms of development robustness and effectiveness of results) of implicit representations when they are used in conjunction with polygonal meshes in applications like skinning and collisions with deformations.