Environnement de réalité augmentée 3D coopératif : approche colocalisée sur table

Augmented Reality (AR) can be defined as the mixing of the real world and the virtual world. This thesis explores the application of AR under a collaborative context for 3D tasks (architecture, chemistry,virtual prototyping, etc.). We focus on the meeting aspect, where peoples around a table can act simultaneou-sly on virtual elements in a shared space.

Study and analysis of the requirements lead us to the development of a new software platform named MARE (Multiuser Augmented Reality Environment). This provided the infrastructure to experiment, study and develop a framework for AR. This work makes several contributions:

• 1. Defines a new software and hardware architecture that is modular, extensible, ergonomic, and reacts in real-time.
• 2. Implements novel and intuitive calibration methods for registering the virtual world to the real world. Techniques are based on a user-guided approach.
• 3. Demonstrates different interaction metaphors for manipulating virtual objects with a dimensional decomposition dependent of the task. We also propose a new high-level hybrid user interface for AR 3D tabletop situation (virtual documents).
• 4. Describes a new kind of hybrid interaction between real and virtual objects, with an interactive virtual painting prototype on real objects.
• 5. Using of CSCW results and his implement on 3D AR. It conduct us to introduce several groupware principles like data protection, user helping or activity coordination.

Moreover, experiments with our system and numerous evaluations give us the opportunity to demonstrate the practicality of this approach. Finally, this work provides and defines a minimum set of components and requirements for realizing efficiently a 3D Augmented Reality Environment on table.