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Accueil du site > English > Research Topics > Topic 1 - Image Analysis and Synthesis > VORTEX Team > Research activities > Modelling
Modelling
The description of a virtual world begins with the modelling of entities and the definition of relations between them. The aim of our research is to facilitate the task of creation of new virtual environments: modelling of new complex objects and layout of numerous objets in the scene.
| An important part of our research deals with declarative modelling of entities (objects making up in the environment) and complex virtual environments in an interactive or declarative way. The correct layout of these entities in a virtual environment deals with the description of relations between entities and an automatic search of solutions. Relations and properties must be first interpreted in constraints then solved by an appropriated and efficient constraint solver (the layout problem is a NP-problem). We studies different approaches based on CSP (layout of few critical entities) and metaheuristics (layout of a large number of entities. |
 Declarative modelling |
Intuitive modelling of free-form 3D shapes:
| Nowadays, modelling tools as well as interaction metaphors remain unadapted for non-expert users. We then investigate following two main axes: 3D shape prototyping by sketching in order to permit a fast and easy modelling of a coarse representation of a 3D object, and the improvement of existing shape representations such as implicit surfaces and subdivision surfaces in order to ameliorate existing techniques. On the other hand, we also develop new reconstruction and rendering techniques for point-based representations. |
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