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Daniel Thalmann

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Publications associées (166)

Sensitivity of hip tissues contact evaluation to the methods used for estimating the hip joint center of rotation

Ronan Boulic, Daniel Thalmann, Ehsan Arbabi, Jérôme Schmid

Computer-based simulations of human hip joints generally include investigating contacts happening among soft or hard tissues during hip movement. In many cases, hip movement is approximated as rotation about an estimated hip center. In this paper, we inves ...

Springer-Verlag2012

Conveying Real-Time Ambivalent Feelings through Asymmetric Facial Expressions

Ronan Boulic, Daniel Thalmann, Junghyun Ahn, Stéphane Gobron

Achieving effective facial emotional expressivity within a real-time rendering constraint requests to leverage on all possible inspiration sources and especially from the observations of real individuals. One of them is the frequent asymmetry of facial exp ...

Springer Berlin Heidelberg2012

Long Term Real Trajectory Reuse Through Region Goal Satisfaction

Ronan Boulic, Daniel Thalmann, Pascal Fua, Junghyun Ahn, Stéphane Gobron, Quentin Silvestre, Horesh Beny Ben Shitrit, Mirko Raca

This paper is motivated by the objective of improving the realism of real-time simulated crowds by reducing short term collision avoidance through long term anticipation of pedestrian trajectories. For this aim, we choose to reuse outdoor pedestrian trajec ...

Springer Berlin Heidelberg2011

An Interdisciplinary VR-Architecture for 3D Chatting with Non-verbal Communication

Daniel Thalmann, Junghyun Ahn, Stéphane Gobron, Quentin Silvestre

The communication between avatar and agent has already been treated from different but specialized perspectives. In contrast, this paper gives a balanced view of every key architectural aspect: from text analysis to computer graphics, the chatting system a ...

Eurographics Association2011

CYBEREMOTIONS – Collective Emotions in Cyberspace

Daniel Thalmann, Junghyun Ahn, Stéphane Gobron

Emotions are an important part of most societal dynamics. As with face to face meetings, Internet exchanges may not only include factual information but may also elicit emotional responses; how participants feel about the subject discussed or other group m ...

2011

Evaluation of a geometry-based knee joint compared to a planar knee joint

Daniel Thalmann, Anders Sandholm

Today neuromuscular simulations are used in several fields, such as diagnostics and planing of surgery, to get a deeper understanding of the musculoskeletal system. During the last year, new models and datasets have been presented which can provide us with ...

Springer-Verlag2011

A visualization framework for the analysis of neuromuscular simulations

Daniel Thalmann, Anders Sandholm

We present a visualization framework for exploring and analyzing data sets from biomechanical and neuromuscular simulations. These data sets describe versatile information related to the different stages of a motion analysis. In studying these data using a ...

Springer-Verlag2011

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

Sentiment analysis of informal textual communication in cyberspace

Daniel Thalmann, Stéphane Gobron

The ability to correctly identify the existence and polarity of emotion in informal, textual communication is a very important part of a realistic and immersive 3D environment where people communicate with one another through avatars or with an automated s ...

2010

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

Real-time textured volume reconstruction using virtual and real video cameras

Daniel Thalmann, Clément Marx, Junghyun Ahn, Stéphane Gobron

Reconstructing objects in three dimensions (3D) has always been one of the primary tasks in the domain of computer graphics (CG). Succeeding in this task in real-time, including texture reconstruction, and with very low-cost hardware is the challenge prese ...

2010

From Sentence to Emotion: a real-time 3D graphics metaphor of emotions extracted from text

Daniel Thalmann, Junghyun Ahn, Stéphane Gobron

This paper presents a novel concept: a graphical representation of human emotion extracted from text sentences. The major contributions of this paper are the following. First, we present a pipeline that extracts, processes, and renders emotion of 3D virtua ...

Springer-Verlag2010

Enhancing Pilot Performance with a SymBodic System

Daniel Thalmann, Dario Floreano, Walter Karlen, Sylvain Cardin

Increased fatigue of pilots during long flights can place both humans and machine at high risk. In this paper, we describe our research on a SymBodic (SYMbiotic BODies) system designed to minimize pilot fatigue in a simulated 48 hour mission. The system de ...

IEEE Engineering in Medicine and Biology Society2010

Penetration Depth Method-Novel Real-Time Strategy for Evaluating Femoroacetabular Impingement

Ronan Boulic, Daniel Thalmann, Ehsan Arbabi

We introduce a new method for computerized real-time evaluation of femoroacetabular impingement (FM). In contrast to previously presented stress analyses, this method is based on two types of predictions of penetration depths for two rotating bodies: curvi ...

Wiley-Blackwell2010

Automated Motion LoD with Rigid Constraints

Daniel Thalmann, Junghyun Ahn

Motion LoD (Level of Detail) is a preprocessing technique that generates multiple details of captured motion by eliminating joints. This LoD technique is applied to movie, game or VR environments for the purpose of improving speed of crowd animation. So fa ...

2010

Asymmetrical Facial Expressions based on an Advanced Interpretation of Two-dimensional Russells Emotional Model

Daniel Thalmann, Junghyun Ahn, Stéphane Gobron, Quentin Silvestre

This paper proposes a novel method to compute emotional parameters based on Russell's 2D circumplex diagram for simulating and visualizing asymmetric facial expressions. Based on a large set of emotion coordinates allocated by psychologists, we have select ...

2010

A subject-specific software solution for the modeling and the visualization of muscles deformations

Ronan Boulic, Daniel Thalmann, Anders Sandholm, Xavier Maurice

Today, to create and to simulate a virtual anatomical version of a subject is useful in the decision process of surgical treatments. The muscular activity is one of the factors which can contribute to abnormal movements such as in spasticity or static cont ...

Springer-Verlag2009

Characterizing full-body reach duration across task and viewpoint modalities

Ronan Boulic, Daniel Thalmann, Damien Maupu

The full-body control of virtual characters is a promising technique for application fields such as Virtual Prototyping. However it is important to assess to what extent the user full-body behavior is modified when immersed in a virtual environment. In the ...

University of Applied Sciences Dusseldorf2009

Context aware, multimodal, and semantic rendering engine

Daniel Thalmann, Patrick Salamin

Nowadays, several techniques exist to render digital content such as graphics, audio, haptic, etc. Unfortunately, they require different faculties that cannot always be applied, e.g. providing a picture to a blind person would be useless. In this paper, we ...

2009

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

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