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Acquiring, structuring shapes and annotating them with semantics to improve design activities

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Collaboration with agents in VR environments

Jan Ciger

Virtual reality is gaining on importance in many fields – scientific simulation, training, therapy and also more and more in entertainment. All these applications require the human user to interact with virtual worlds inhabited by intelligent characters an ...

EPFL2005

Towards Intelligent Miniature Flying Robots

Roland Siegwart

This paper presents a practical method for small-scale VTOL design. It helps for elements selection and dimensioning.We apply the latter to design a fully autonomous quadrotor with numerous innovations in design methodology, steering and propulsion achievi ...

2005

Object-oriented approach for dynamic system modelling and simulation

Adel Besrour

Software engineering always cares to provide solutions for building applications as close as possible to what they should be, according to the requirements and the final users needs. Systems behavior simulation is a very common application to virtually rep ...

EPFL2005

DO PARTNERS CARE ABOUT THEIR MUTUAL LOCATION? Spatial awareness in virtual environments.

Pierre Dillenbourg, Nicolas Nova

This paper reports on four experimental studies concerning regard to how people use space so as to solve problems collaboratively in virtual environments. Prior to presenting the results, it summarizes the wide range of literature concerning social uses of ...

2005

Knot-tying with Visual and Force Feedback for VR Laparoscopic Training

Hannes Bleuler, Etienne Burdet, Fei Wang

Real-time simulation of thread and knot-tying with visual and force feedback is an essential part of virtual reality laparoscopic training. This paper presents a physics-based thread simulator that enables realistic knot tying at haptic rendering rate. The ...

2005

Dynamic thread for real-time knot-tying

Etienne Burdet, Fei Wang, Ankur Dhanik

Real-time simulation of knot-tying with visual and force feedback is essential to VR surgery training. We present a physics-based simulator that enables realistic knot tying at haptic speed. The virtual thread obeys Newton's laws and behaves naturally. The ...

2005

The mobile animator: interactive character animation in collaborative virtual environments

Daniel Thalmann, Frédéric Vexo

We have designed a mobile -PDA-based- interface for real-time control of virtual characters in multiuser semi-immersive virtual environments - using a large rear-projection screen. The proof-of-concept implementation we present shows the potential of handh ...

2004

Speculative planning with delegation

Daniel Thalmann, Tolga Abaci, Jan Ciger

This paper presents a novel method of collaborative problem solving for intelligent agents in virtual environments. We describe a planner for STRIPS-like domains enhanced by techniques of "delegated computing". Instead of having one central planner with co ...

2004

The complexity of testing a motivational model of action selection for virtual humans

Daniel Thalmann, Etienne De Sevin

After implementing a motivational model of action selection applied to autonomous virtual humans inspired by models of animals' decision-making, the problem consists of testing it in good conditions for validation. Indeed this model has to respect the six ...

2004

Multi-Scale Simulation For Microsurgery Trainer

Etienne Burdet, Fei Wang, Zheng Li

For use in a Virtual Reality based training system for surgical micromanipulation, we have developed a fast multi- scale FEM algorithm that concentrates detail where needed while still handling global deformations. The resulting 6- to 7-fold speed up is pr ...

2004