Projet de recherche doctoral numero :4122


Date depot: 1 janvier 1900
Titre: 3D Copy-Paste: Cross Parameterization of 3D Data
Directeur de thèse: Julien TIERNY (LIP6)
Directeur de thèse: Florent DUPONT ()
Domaine scientifique: Sciences et technologies de l'information et de la communication
Thématique CNRS : Non defini

Resumé: WEB: With the recent significant developments of 3D displays, graphical processing units, and web-based 3D technologies, the entertainment industry related to computer graphics (gaming, motion pictures, etc.) has to deal with an important increase of activity. However, the most resource-consuming task in this field is not the production of the software generating the virtual worlds, but the production of the 3D data populating these virtual worlds (characters, buildings, vehicles, etc.) In addition to the creation of the geometry of a 3D virtual object, a designer has to create a large number of additional geometrical structures, that we call 'geometrical meta-data', which will enrich the visual appearance of the object, including: · Texture atlases: which consists of a set of 2D pictures 'glued' onto the boundary surface of the 3D object (see Figure 1); · Bump maps: which consists of sets of specifically designed bumps that will create some roughness on top of the object; · An animation skeleton: which consists of a symbolic skeleton located inside the object, that will help animate the object; · A deformation cage: an alternative to animation skeleton, which consists in a low resolution surface enclosing a 3D object (by moving the few control points of the cage, the enclosed 3D object is automatically smoothly deformed, see Figure 2); · Volumetric textures: which will define the color of the inside of semi-transparent objects; · etc. Although these geometrical meta-data can be very similar from one object to the other, designers still need to re-create them nearly from scratch every time a new object is designed. With this Ph.D. thesis, we would like to address this issue by developing a new system for the interactive Copy-Paste of Geometrical Meta-Data, where the designer would select the meta-data of an existing object and the system would automatically deform and fit them to another, newly created, object (as illustrated in Figure 3).

Doctorant.e: Vintescu Ana-Maria