Inria / Raweb 2004
Project-Team: EVASION

Search in Activity Report, year 2004:


Project-Team : evasion

Section: New Results

Procedural methods for geometry and motion

Participants: Marie-Paule Cani, Caroline Larboulette, Frank Perbet.

A generic tool for multi-resolution procedural modelling

Participants: Marie-Paule Cani, Frank Perbet.

Procedural modelling is probably the only approach enabling the modelling of a virtually infinite world with an unlimited number of details of different scales, that may be auto-similar or not. The last part of Frank Perbet's thesis [3], defended in February 2004, has proposed a generic tool, based on dynamic graphs, for the efficient on-fly generation and exploration of this kind of model. Only the parts of the scene which are currently visible are generated, at the adequate level of details, enabling real-time display even during interactive zooming operations.

Procedural skinning for character animation

Participants: Marie-Paule Cani, Caroline Larboulette.

Adding details to an animation while avoiding the heavy cost of a full physically-based simulation can be done through a procedural approach. We proposed a method of that kind for generating skin and cloth wrinkles on top of a standard character animation [20] : the dynamic wrinkles layer (see Figure 12) uses the deformations of the underlying mesh together with constraints such as length preservation for generating local deformations mimicking wrinkles. Results are generated in real-time. In her thesis [2] defended in November 2004, Caroline Larboulette combines this method with a simple dynamic layer which adds dynamic vibrations to the flesh of the character, under quick skeleton motion.

Figure 12. Skin and cloth wrinkles generated with a dynamic wrinkles layer