Publications by Helena Stephanie Grillon Le Gallennec

Simulating interactions with virtual characters for the treatment of social phobia

Virtual Reality (VR) has nowadays become a very useful tool for therapists in the treatment of phobias. Indeed, it allows the simulation of scenarios which are difficult to reproduce in real life. It also allows for a situation to be repeated as much as on ...

EPFL2009

Gaze Behaviors for Virtual Crowd Characters

Daniel Thalmann, Barbara Yersin, Jonathan Maim, Helena Stephanie Grillon Le Gallennec

Nowadays, crowds of virtual characters are used in many domains such as neurosciences, psychology, and computer sciences. Since as human beings, we are natural experts in human being representation and movement, it makes it that much harder to correctly mo ...

Springer-Verlag New York, Ms Ingrid Cunningham, 175 Fifth Ave, New York, Ny 10010 Usa2009

Simulating gaze attention behaviors for crowds

Daniel Thalmann, Helena Stephanie Grillon Le Gallennec

Crowd animation is a topic of high interest which offers many challenges. One of the most important is the trade-off between rich, realistic behaviors, and computational costs. To this end, much effort has been put into creating variety in character repres ...

Wiley-Blackwell2009

Challenges in Crowd Simulation

Daniel Thalmann, Barbara Yersin, Jonathan Maim, Helena Stephanie Grillon Le Gallennec

The purpose of this paper is to identify the problems to solve in order to simulate real-time crowds in a Virtual Environment. We try to classify these problems and study how they have been addressed until now by the research community and our Lab in parti ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2009

Eye Contact as Trigger for Modification of Virtual Character Behavior

Daniel Thalmann, Helena Stephanie Grillon Le Gallennec

The increasing use of Virtual Reality in the treatment of phobias translates in a just as expanding need for realism in its scenes and characters. Virtual characters need to seem gifted with intelligence. A first step in achieving this is by giving them th ...

2008

Crowds of Moving Objects: Navigation Planning and Simulation

Daniel Thalmann, Helena Stephanie Grillon Le Gallennec

This paper presents a solution to interactive navigation planning and real-time simulation of a very large number of entities moving in a virtual environment. From the environment geometry analysis, we deduce a structure called navigation graph, which is t ...

2007

Eye-tracking as Diagnosis and Assessment Tool for Social Phobia

Daniel Thalmann, Helena Stephanie Grillon Le Gallennec

In this study, we evaluate the usability of an eyetracking system as a diagnosis and assessment tool for visual avoidance behaviors in the context of social anxiety disorders. We conducted this study over five social phobic patients and five non phobic peo ...

2007

Virtual Reality as Therapeutic Tool in the Confines of Social Anxiety Disorder Treatment

Daniel Thalmann, Bruno Herbelin, Helena Stephanie Grillon Le Gallennec

In this paper, we present a study, conducted over 8 social phobic subjects, whose aim is to evaluate the efficiency and flexibility of virtual reality as a therapeutic tool in the confines of a social phobia behavioural therapeutic program. Our research pr ...

2006

Use of Virtual Reality as Therapeutic Tool for Behavioral Exposure in the Ambit of Social Anxiety Disorder Treatment

Daniel Thalmann, Bruno Herbelin, Helena Stephanie Grillon Le Gallennec

We hereby present a study whose aim is to evaluate the efficiency and flexibility of virtual reality as a therapeutic tool in the confines of a social phobia behavioural therapeutic program. Our research protocol, accepted by the ethical commission of the ...

2006

Use of Virtual Reality as Therapeutic Tool for Behavioural Exposure in the Ambit of Social

Daniel Thalmann, Bruno Herbelin, Helena Stephanie Grillon Le Gallennec

We hereby present a study whose aim is to evaluate the efficiency and flexibility of virtual reality as a therapeutic tool in the confines of a social phobia behavioural therapeutic program. Our research protocol, accepted by the ethical commission of the ...

2006

Using physiological measures for emotional assessment: A computer-aided tool for cognitive and behavioral therapy

Daniel Thalmann, Olivier Renault, Bruno Herbelin, Helena Stephanie Grillon Le Gallennec

In the context of cognitive and behavioural therapies, the use of immersion technologies to replace classical exposure often improves the therapeutic process. As it is necessary to validate the efficiency of such a technique, both therapists and VR special ...

2005