Thibaut Le Naour

Thibaut
Le Naour
PhD in Computer Science
Research areas : Computer Graphics,
Animation of virtual humans, Mesh editing,
Motion capture
Lab. IRISA-UBS
Campus de Tohannic, rue Y. Mainguy
56000 Vannes (FRANCE)
.
H (+33)6 03 49 92 12
B [email protected]
Í people.irisa.fr/Thibaut.Le_Naour
Education
Phd Thesis
2010-2013 Using spatial relationship for the analysis and the edition of the movement,
Computer graphics, IRISA-Vannes – University of Bretagne Sud, France.
Reviewers : Marie-Paule Cani, Professor, University of Grenoble INP (France) – Ronan
Boulic, Maître d’enseignement et de recherche, EPFL Lausanne (Suisse)
Examiners : Frank Multon - president, Professor, University of Rennes 2 (France) – Frank
Hetroy, MCF, University of Grenoble INP (France)
Advisors : Sylvie Gibet, Professor, University of Bretagne Sud, IRISA – Nicolas Courty,
MCF-HDR, University of Bretagne Sud, IRISA (France)
Abstract The animation of virtual characters driven by data is one of the key topics in computer
graphics. In this context, a motion is classically defined by a list of skeletons over
time and each of them is described by a vector of positions and rotations. The 3D
mesh is then controlled by the skeletons by a rigging step between the skeleton and
the mesh. The main aim of my thesis consists of studying other representations of the
motion through a set of spatial relationships. Thus, we propose two approaches : the
first one considers the motion in the metric space and the second one characterizes
each posture by a differential representation using the discrete Laplacian operator.
First, we propose to represent the postures of the motion by a set of distances. The
aim is to produce new motions from an editing process or kinematic inversions. This
representation allows a simple and intuitive control of the character animation. We see
that this representation has several also properties exploitable in the context of motion
analysis. Next, we define the motion by a set of graphs. The vertices are characterized
by a differential information. Through this representation, we propose a new method
to edit a motion by coupling some constraints of distance with the use of the discrete
Laplacian operator. This operator preserves the spatial relationships during the
edition of the motion and the constraints of distance preserve the properties of the
induced skeleton. This concept allows us to propose three applications dedicated to the
reconstruction and the edition of motions : (i) an interactive system to edit sequences
of skeletons using the discret 3D+t Laplacian operator ; (ii) an application dedicated
to the reconstruction of marker trajectories ; (iii) a process allowing the animation of
a mesh constrained by an implicit skeleton and driven by marker trajectories.
Others
2007–2008 Master’s diploma, UBS-Vannes, Master of Computer Science, Multimedia and
Conception of software architecture.
2006–2007 Master’s diploma, UBS-Vannes, Master of Mathematics and application of Mathematics, Optimization, Mathematical Modeling and Simulation.
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Teaching experience
2013–2014 Assistant Professor (ATER), Institute of Computer science - University of Bretagne
Sud, 1st et 2nd year - 192h.
Propositional logic and predicate calculus, Web conception, C++, Data structure, Algorithmic,
HMI
2010–2013 Monitor, Engineering school - University of Bretagne Sud, License and master level 198h.
Computer graphics, 3d Animation, Image synthesis, C++, Web engineering, Multimedia
processing
Research experience
Publications Spatio-temporal coupling with the 3D+t motion Laplacian, in journal of
computer animation and virtual worlds 2013, T. Le Naour, N. Courty and S. Gibet, [link]
Cinématique guidée par les distances, Revue Electronique Francophone
d’Informatique Graphique 2011, T. Le Naour, N. Courty and S. Gibet, [link]
The SignCom System for Data-Driven Animation of Interactive Virtual
Signers: Methodology and Evaluation, In journal of ACM Transactions on
Interactive Intelligent Systems, S. Gibet, N. Courty, K. Duarte et T. Le Naour, [link]
Presentations Utilisation des relations spatiales pour la reconstruction de trajectoires
de marqueurs issues de la capture de mouvement, Journées de l’Association
Française d’Informatique Graphique 2013, T. Le Naour, N. Courty and S. Gibet, [link]
Spatio-temporal coupling with the 3D+t motion Laplacian, in procedings of
International conference Computer Animation and Social Agents 2013 (CASA 2013),
T. Le Naour, N. Courty and S. Gibet
Fast Motion Retrieval with the Distance Input Space, In procedings of International conference Motion In Game 2012 (MIG 2012), T. Le Naour, N. Courty and
S. Gibet, [link]
Cinématique guidée par les distances, Journées de l’Association Française
d’Informatique Graphique (AFIG 2011), T. Le Naour, N. Courty and S. Gibet,
A Combined Semantic and Motion Capture Database for Real-Time Sign
Language Synthesis, in procedings of Intelligent Virtual Agents (IVA 09), C. Awad,
N. Courty, K. Duarte, T. Le Naour and S. Gibet, [link]
Gérard: Interacting with Users of French Sign Language, in procedings of the
Gatheringlibrairies of Animated Lifelike Agents (GALA 09), C. Awad, K. Duarte and
T. Le Naour
Work Experience
Academic
2013–2014 ATER, Expression team [link], IRISA-UBS.
I worked on the acquisition of motion capture with Qualisys and on the reconstruction
of sequences of skeleton with Visual 3d. Furthermore, I was in charge of designing and
implementing a software dedicated to hole filling and filtering of motion capture data.
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2008–2010 Software engineer, ANR SIGNCOM Project [link], IRISA-UBS (ex VALORIA).
The SignCom project (IRISA, INRIA, IRIT, M2S, Polymorph) aims to improve the quality of
real-time interaction between humans and virtual agents. Using structured and coded French
Sign Language signs, the real and virtual humans are able to converse with each other. In this
context, I was in charge of designing and implementing a motion database, a rendering engine
and a system of animation of virtual humans (integrating various technologies such as motion
control, facial animation, and gaze direction).
Business
2007–2008 3D programmer, Consultant for NPCube, Le Port (île de la Réunion), France.
NPCube is a company specialized in the creation of MMORPG video games. My work consisted
of designing and implementing a system of animation for multi-player using keyframing (with
skinning deported on GPU). I was also in charge of creating an exporter/importer collada and
improving the system of collision of the game.
Technical Skills
Applied Graph theory, Optimization, Modeling, Simulation, Discrete geometry, Signal processmathematics ing
Computer 3D applications, 3D Animation, Rendering
graphic
Languages C/C++, OpenGL, GLSL, XML, LATEX, PHP, AS, Java, Python, SQL
SDK/libraries QT, WxWidgets, SDL, GLFW, SMFL, Eigen, Tetgen, AML++, CGAL, FBX, Collada
Tools Microsoft Visual 200x, CMake, Matlab, Eclipse, Delmia, CATIA, GIMP, Adobe
premiere, Mitsuba, Povray, 3DSMax, Qualisys and Visual 3d
Languages
Good written and spoken English. French : mother tongue.
References
Sylvie IRISA, University of Bretagne Sud – Bat. ENSIBS, rue Yves Mainguy, BP 573 –
Gibet F-56017 Vannes, France, [email protected], tel:(+33)297017243
Nicolas IRISA, University of Bretagne Sud – Bat. ENSIBS, rue Yves Mainguy, BP 573 –
Courty F-56017 Vannes, France, [email protected], tel:(+33)297017213
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