Publications de Frédéric Vexo

Quantifying effects of exposure to the third and first-person perspectives in virtual-reality-based training

Daniel Thalmann, Frédéric Vexo, Patrick Salamin, Ravi Tej Sai Giridhar Tadi, Olaf Blanke

In the recent years, usage of the third-person perspective (3PP) in virtual training methods has become increasingly viable and despite the growing interest in virtual reality and graphics underlying third-person perspective usage, not many studies have sy ...

Institute of Electrical and Electronics Engineers2010

Providing the best Third-Person Perspective to a Video-Through HMD

Daniel Thalmann, Frédéric Vexo, Patrick Salamin

This paper describes a system with several fixed cameras that provide Third-Person Perspective (3PP) to the video-through HMD of the user. Once done, our system uses an algorithm to make intelligent switches between the different cameras in order to provid ...

2010

Tangible drag-and-drop: Transferring digital content with a remote control

Daniel Thalmann, Frédéric Vexo, Mathieu Hopmann

Despite the fact that dematerialization of all our multimedia content brings advantages, the absence of physical medium brings also a lack of tangibility. This paper presents a gesture-based interface to bring back tangibility in our dematerialized multime ...

Springer2009

Restez à l'écoute! un transcodeur automatique de flux RSS

Daniel Thalmann, Frédéric Vexo, Patrick Salamin

L'utilisation des agrégateurs de news est devenue très commune bien qu'ils requièrent de l'utilisateur qu'il soit devant une écran. Malheureusement, la plupart des gens ne possèdent pas d'écran (ou alors de très petits) lorsqu'ils se déplacent. De plus, ce ...

2009

Intelligent switch: An algorithm to provide the best third-person perspective in augmented reality

Daniel Thalmann, Frédéric Vexo, Patrick Salamin

Augmented reality (AR) environments are suffering from a limited workspace. In addition, registration issues are also increased by the use of a mobile camera on the user that provides a first-person perspective (1PP). Using several fixed cameras reduces th ...

2009

Stay Tuned! An Automatic RSS feeds Trans-coder

Daniel Thalmann, Frédéric Vexo, Patrick Salamin

News aggregators are widely used to read RSS feeds but they require the user to be in front of a screen. While moving, people usually do not have any display, or very small ones. Moreover, they need to perform actions to get access to the news: download a ...

2009

Improved Third-Person Perspective: a solution reducing occlusion of the 3PP?

Daniel Thalmann, Frédéric Vexo, Patrick Salamin

Pre-existing researches [Salamin et al. 2006] showed that Third-Person Perspective (3PP) enhances user navigation in 3D virtual environments by reducing proprio-perception issues. Nevertheless, this approach has shown drawbacks related to occlusions and ad ...

2008

Thanks to geolocalized remote control : the sound will follow

Daniel Thalmann, Frédéric Vexo, Mathieu Hopmann

Dematerialized music and MP3 players offer to the user the possibility of carrying his musical content everywhere. However, at home, the music collection is generally not centralized, split between different rooms and audio supports (CDs, MP3s, etc). In th ...

2008

The Mental Vision framework - A platform for teaching, practicing and researching with computer graphics and virtual reality

Daniel Thalmann, Frédéric Vexo, Achille Peternier

Despite the wide amount of computer graphics frameworks and solutions available, it is still difficult to find a perfect one fitting at the same time many constraints, like pedagogical intents and user-friendliness or speed with high rendering quality and ...

Springer-Verlag New York, Ms Ingrid Cunningham, 175 Fifth Ave, New York, Ny 10010 Usa2008

Two-arm haptic force-feedbacked aid for the shoulder and elbow telerehabilitation

Daniel Thalmann, Frédéric Vexo, Patrick Salamin

In this paper, we present a telerehabilitation system aiming to help the physiotherapists for the shoulder and elbow treatment. It is based on a two-arm haptic force feedback to avoid excessive efforts and discomfort with the spinal column. This system, re ...

2008

A wearable system for mobility improvement of visually impaired people

Daniel Thalmann, Frédéric Vexo, Sylvain Cardin

Springer, Springer-Verlag2007

Haptic feedback in mixed-reality environment

Daniel Thalmann, Frédéric Vexo, Renaud Ott

Springer, Springer-Verlag2007

MHAPTIC : a Haptic Manipulation Library for Generic Virtual Environments

Daniel Thalmann, Frédéric Vexo, Vincent de Perrot, Renaud Ott

This paper presents a new library called MHaptic for bimanual haptic interaction within generic virtual environments. It has been specifically designed to work with a Haptic Workstation. MHaptic provides tools for accelerated development of virtual environ ...

2007

Immersive flight for surveillance applications

Daniel Thalmann, Frédéric Vexo, Sylvain Cardin, Xavier Righetti

In this paper , we present a VR-based first-person view paradigm applied to a tele-surveillance application. Using an Unmanned Air Vehicle (UAV), we have developed an intuitive tangible interface between the pilot and his airship (blimp). The idea is to ma ...

2007

An ontology of virtual humans: Incorporating semantics into human shapes

Daniel Thalmann, Laurent Moccozet, Frédéric Vexo, Alejandra Garcia Rojas Martinez

Most of the efforts concerning graphical representations of humans (Virtual Humans) have been focused on synthesizing geometry for static or animated shapes. The next step is to consider a human body not only as a 3D shape, but as an active semantic entity ...

2007

Visualization Learning for Visually Impaired People

Daniel Thalmann, Frédéric Vexo, Patrick Salamin

Virtual Environments (VE) are mainly visual experiments that exclude visually impaired people. In this paper we present an application that should allow almost everybody to ``see'' or at least to perceive 3D shapes. We will first describe the mandatory asp ...

2007

Practical Design and Implementation of a CAVE Environment

Daniel Thalmann, Frédéric Vexo, Achille Peternier, Sylvain Cardin

CAVE systems are nowadays one of the best Virtual Reality (VR) immersive devices available for rendering virtual environments. Unfortunately, such kind of hardware is extremely expensive, complex and cum-bersome, thus limited in its spread. Several cheaper ...

2007

Haptic Feedback in Mixed-Reality Environment

Daniel Thalmann, Frédéric Vexo, Renaud Ott

2007

Emotional face expression profiles supported by virtual human ontology

Daniel Thalmann, Frédéric Vexo, Alejandra Garcia Rojas Martinez

Expressive facial animation synthesis of human like characters has had many approaches with good results. MPEG-4 standard has functioned as the basis of many of those approaches. In this paper we would like to lay out the knowledge of some of those approac ...

2006

Advanced Mixed Reality Technologies for Surveillance and Risk Prevention Applications

Daniel Thalmann, Frédéric Vexo, Patrick Salamin, Renaud Ott

We present a system that exploits advanced Mixed and Virtual Reality technologies to create a surveillance and security system that could be also extended to define emergency prevention plans in crowdy environments. Surveillance cameras are carried by a mi ...

2006