Research topics

Computer Vision and Computer Animation of Characters My works on real or virtual character motion aim at analyzing and extracting important information in real motions of the face or the body, like wrinkles details of faces, style of movement (tired, old, in a hurry, etc.) or emotion (happy, stressed, nervous, proud, etc.) for producing new realistic animations of virtual characters. Following this goal, I've been interested on several topics:

  • easy and interactive motion capture;
  • emotions/expressions/styles extractions and recognitions through analyzes of video or MoCap in order to transfer to virtual characters;
  • animations/parameters transfer from one character to another;
  • procedural and physics-based character animation suitable to be included in a large 3D scene.

From 1998 to 2005: alternative Representations for the efficient rendering and animation of large scenes:

  • Image-Based, Point-based representations;
  • Volumetric texture;
  • Level Of Details and transition between these representations.


International publications

bodyexp.jpg Generic Body Expression Recognition Based on Synthesis of Realistic Neutral Motion. Arthur Crenn, Alexandre Meyer, Hubert Konik, Rizwan Ahmed Khan, Saïda Bouakaz.
IEEE Access, IEEE, 2020, 8, pp.207758-207767.
[ 10.1109/ACCESS.2020.3038473 ], [ hal-03027661 ]
emotion_expe2.jpg A novel database of children's spontaneous facial expressions (LIRIS-CSE).
R.A. Khan, A. Creen, A. Meyer, S. Bouakaz.
Image and Vision Computing (Journal, 2019)
[ PDF ; LIRIS-CSE Database ]
bodyexp.jpg Toward an Efficient Body Expression Recognition Based on the Synthesis of a Neutral Movement.
Arthur Crenn, Rizwan Ahmed Khan, Alexandre Meyer, Hubert Konik, Saïda Bouakaz.
19th ACM International Conference on Multimodal Interaction , Nov 2017 (Oral Presentation).
[ PDF ; Paper awarded "Honorable mention" ]
s_rizwan_icme2013.jpg Saliency Based Framework for Facial Expression Recognition.
R.A. Khan, A Meyer, H. Konik, S. Bouakaz.
Frontiers of Computer Science (Journal, 2018)
[ PDF ]
depressedtriangle.jpg Body expression recognition from animated 3D skeleton.
Arthur Crenn, Rizwan Ahmed Khan, Alexandre Meyer, Saïda Bouakaz.
International Conference on 3D Imaging (IC3D 2016), Dec 2016, Liège, Belgium.
[ IEEE explore ]
s_rizwan_icme2013.jpg Automatic Affect Analysis: From Children to Adults..
R.A. Khan, A Meyer, S. Bouakaz.
International Symposium on Visual Computing (ISVC) 2015.
[ SpringerLink ]
s_rizwan_icme2013.jpg Framework for reliable, real-time facial expression recognition for low resolution images.
R.A. Khan, A Meyer, H. Konik, S. Bouakaz.
Pattern Recognition Letters (Journal), 2013.
[ PDF ]
s_rizwan_pr2013.jpg Pain Detection Through Shape and Appearance Features.
R.A. Khan, A Meyer, H. Konik, S. Bouakaz.
IEEE International Conference on Multimedia and Expo (ICME), IEEE, 2013.
[ PDF ]
s_wolf.jpg Generic Spine Model with Simple Physics for Life-Like Quadrupeds and Reptiles.
A. Abdul Karim, A Meyer, T. Gaudin, A. Buendia, S. Bouakaz.
In VRIPHYS 2012: 9th Workshop on Virtual Reality Interaction and Physical Simulation. 2012.
[ PDF ] - [ Video ]
Procedural Locomotion of Multi-Legged Characters in Dynamic Environments.
Ahmad Abdul Karim, Thibaut Gaudin, Alexandre Meyer, Axel Buendia, and Saida Bouakaz.
In Journal of Computer Animation and Virtual World (Computer Animation and Social Agents special issue) 2012.
[ PDF ] - [ Video ]
R.A. Khan, A Meyer, H. Konik, S. Bouakaz.
International Conference on Image Processing (ICIP), IEEE ed. 2012.
[ PDF ] - [ Video(youtube) ]
s_emotion_expe.jpg Exploring human visual system: study to aid the development of automatic facial expression recognition framework.
R.A. Khan, A Meyer, H. Konik, S. Bouakaz.
Conference on Computer Vision and Pattern Recognition(CVPR), Workshop on Gesture Recognition , IEEE ed. 2012.
[ PDF ]
s_wrinkles.jpg Easy Acquisition and Real-Time Animation of Facial Wrinkles.
L. Dutreve, A Meyer, S. Bouakaz.
In Journal of Computer Animation and Virtual World (Computer Animation and Social Agents special issue) 2011.
[ PDF ] - [ Video(AVI) Video(Youtube)]
Adding physical like reaction effects to skeleton-based animations using controllable pendulums.
Ahmad A. Karim, T. Gaudin, A. Meyer, A.Buendia and S. Bouakaz
In the journal Transactions on Edutainment (Computer Animation and Social Agents special issue) 2011.
[ PDF ] - [ Video ]
Facial Expression Recognition using Entropy and Brightness Features.
R.A. Khan, A Meyer, H. Konik, S. Bouakaz.
In 11th International Conference on Intelligent Systems Design and Applications (ISDA) 2011.
[ PDF ]
s_skinning_transf.jpg Easy Rigging of Face by Automatic Registration and Transfer of Skinning Parameters.
L. Dutreve, A Meyer, V. Orvalho, S. Bouakaz.
In LNCS 6375, International Conference on Computer Vision and Graphics 2010.
[ PDF ] - [ Video ]
s_visualhull.jpg Towards Removing Ghost-Components from Visual-Hull Estimations.
Brice Michoud, Erwan Guillou, Saïda Bouakaz, Mathieu Barnachon, Alexandre Meyer.
International Conference on Image and Graphics 2009
Real-Time Dynamic Wrinkles of Face for Animated Skinned Mesh.
Dutreve, L., Meyer, A., Bouakaz, S.
In International Symposium on Visual Computing 2009.
[ PDF ] - [ Video ]
s_vriphys08.jpg Multi-Layer Level of Detail For Character Animation
Yann Savoye and Alexandre Meyer
In Workshop on Virtual Reality Interaction and Physical Simulation 2008.
Feature Points Based Facial Animation Retargeting
Dutreve, L., Meyer, A., Bouakaz, S.
In VRST '2008: 15th ACM Symposium on Virtual Reality Software and Technology (4 pages paper).
(Acceptance rate=30% including short papers) [ PDF ] - [ Video ]
s_accv07.jpg User-guided Shape from Shading to Reconstruct Fine Details from a Single Photograph
A. Meyer, H.B. Briceno Pulido, S. Bouakaz.
ACCV'2007 : 8th Asian Conference on Computer Vision, Tokyo, Japan. (Acceptance rate 32%)
[ PDF ] - [ Video(Face) ] - [ Video(Statue) ] - [ Video(Vase) ]
Virtual arm for the phantom pain therapy
Loris Eynard, Alexandre Meyer, Saida Bouakaz
IEEE ACIDCA-ICMI'2005, Special Session on Intelligent Machine Vision Applications
Point-based rendering of trees
Guillaume Gilet, Alexandre Meyer, Fabrice Neyret
Eurographics Workshop on Natural Phenomena 2005
s_ml.jpg Real-Time Reflection on Moving Vehicles in Urban Environments
Alexandre Meyer, and Celine Loscos, University College London, United Kingdom
10th ACM Symposium on Virtual Reality Software and Technology 2003, Oct 2003, Japan. (acceptance rate=35%)
The CREATE Project: Mixed Reality for Design, Education, and Cultural Heritage with a Constructivist Approach
H. R. Widenfeld, M. Roussou, A. Meyer, F. Tecchia, G. Drettakis, E. Gallo, A. R. Martinez, N. Tsingos, Y. Chrysanthou, L. Robert, M. Bergamasco, A. Dettori, and S. Soubra.
The Second IEEE and ACM International Symposium on Mixed and Augmented Reality (ISMAR'03), Poster session, Oct 2003, Japan.
Intuitive Crowd Behaviour in Dense Urban Environments using Local Laws
Celine Loscos, David Marchal and Alexandre Meyer
Theory and Practice of Computer Graphics 2003 (Eurographics UK), June 2003, Birmingham (UK).
s_mnp.jpg Interactive Rendering of Trees with Shading and Shadows
Alexandre Meyer, Fabrice Neyret, Pierre Poulin
Eurographics Workshop on Rendering , Jul 2001.
Stingray: Cone Tracing using a software DSM for SCI clusters
Alexandre Meyer, Emmanuel Cecchet
Third IEEE International Conference on Cluster Computing, 2001.
s_mn.jpg Multiscale Shaders for the Efficient Realistic Rendering of Pine-Trees
Alexandre Meyer, Fabrice Neyret
Graphics Interface pages 137–144 , May 2000.
s_mn98.jpg Interactive Volumetric Textures
Alexandre Meyer, Fabrice Neyret
Eurographics Rendering Workshop 1998.

Book's chapters

s_igr.jpg Représentations alternatives
A. Meyer, P. Decaudin, F. Neyret.
Chapitre du livre “Informatique graphique et rendu (Traité IC2)”;
Éditeur HERMES SCIENCE PUBLICATIONS; Série traitement du signal et de l'image 2007.

Research reports and other conferences

Separating superfluous from essential: which facial region(s) holds the key for expression recognition?
R.A. Khan, H. Konik, É. Dinet, A Meyer, S. Bouakaz.
Dans 16th European Conferences on Eye Movements (ECEM'2011), poster.
Survey on Computer Representations of Trees for Realistic and Efficient Rendering
F. Boudon, A Meyer, C. Godin.
RR-LIRIS-2006-003, 2006

s_clm.jpg Three LOD for the Realistic and Real-Time Rendering of Crowds with Dynamic Lighting
Jean-Marc Coic and Celine Loscos and Alexandre Meyer
RR-LIRIS-2005-008, 2005

National conferences

Une méthode de reconnaissance des expressions du visage basée sur la perception
R.A. Khan, A Meyer, H. Konik, S. Bouakaz.
Dans Atelier VISAGES (Vidéo-surveillance Intelligente : Systèmes et AlGorithmES), Reconnaissance des Formes et l'Intelligence Artificielle (RFIA), Lyon, France. 2012.

Textures volumiques interactives
Alexandre Meyer, Fabrice Neyret
AFIG'98 pages 261–270 , Dec 1998


Représentations d'arbres réalistes et efficaces pour la synthèse d'images de paysages
Alexandre Meyer
Thèse de l'Université Joseph Fourier, décembre 2001.

- Texture Volumique Interactive
Alexandre Meyer
DEA (Master) Imagerie, Vision & Robotique, Juin 1998.