Raphaëlle Chaine
Professeur en Informatique,
Professor in Computer Science

Université de Lyon 

Université Claude Bernard Lyon 1
43 Boulevard du 11 Novembre 1918,
Bâtiment Nautibus
69622 Villeurbanne Cedex

Tel : (+33) (0)4 72 43 26 62
Fax : (+33) (0)4 72 43 15 36
e-mail : raphaelle.chaine"at"

Université Claude Bernard Lyon 1
Université de Lyon

Research interests

My research activity is related to Computer Graphics and Geometric Modelling, with a focus on Computational Geometry data structures and algorithms. It covers the following topics :


Me and my colleagues are members of the GeoMod team, that focuses on Geometric Modelling, Computational Geometry and Fractals.

I am responsible of the e-ROMA project, which is founded by the ANR and that adresses Expressive restoration of Gallo-Romanian statues by virtual sculpture and animation.

My work is also part of the PAPS project which focuses on the exploitation of surface self-similarities. Previously, the purpose of the Art3D project was to develop a platform for the digital preservation of cultural heritage artwork. The EROS3D project was more more focused on the exploitation of an artwork data-base, and the TRIANGLES project dealt with new challenges in triangulation. I am also involved in the LIMA project.

Ph-D Thesis supervision

I'm currently looking for stundents interested in a Ph. D on the subject of Expressive restoration of Gallo-Romanian statues by virtual sculpture and animation : don't hesitate to contact me and to apply if you are interested.

Current Ph D students :
Previous Ph D Students :
I was involved in the supervision of Jeremy Espinas and Fabien Cellier (CIFRE PhD with ATOS Worldline).

Participation into Ph.D. examining boards  :
Participation into HDR examining boards  :

Contributions à l'introduction de flexibilité dans la reconstruction et l'édition de modèles 3D
Rémi Allègre
Thèse de Doctorat de l'Université Claude Bernard Lyon 1, spécialité Informatique, 2006
Ph.D. thesis in Computer Science, Université Claude Bernard Lyon 1, 2006
(in French)


Calcul efficace et direct des représentations de maillages 3D utilisant les harmoniques sphériques
M. Mousa
Thèse de Doctorat de l'Université Claude Bernard Lyon 1, spécialité Informatique, 2007
Ph.D. thesis in Computer Science, Université Claude Bernard Lyon 1, 2007
(in French)
Thesis Mohammed Mousa

3D reconstruction with a priori knowledge

Reconstruction de modèles CAO de scènes complexes à partir de
nuages de points basée sur l’utilisation de connaissances a priori

Aurélien Bey
Thèse de Doctorat de l'Université Claude Bernard Lyon 1, spécialité Informatique, 2012
Ph.D. thesis in Computer Science, Université Claude Bernard Lyon 1, 2012
(in French)
Thesis Aurélien Bey

Selected publications

Click here for a complete list.

Sparse Geometric Representation Through Local Shape Probing
Julie Digne, Sébastien Valette, Raphaëlle Chaine,
accepted for publication in IEEE Transactions on Visualization and Computer Graphics 2017

Images and LIDAR registration
Super-resolution of Point Set Surfaces using Local Similarities
A. Hamdi-Cherif, J. Digne, R. Chaine, to appear in Computer Graphics Forum 2017

Images and LIDAR registration
Fine Scale Image Registration in Large-Scale Urban LIDAR Point Sets
Maximilien Guislain, Julie Digne, Raphaëlle Chaine, Gilles Monnier,  to appear in Computer Vision and Image Understanding (CVIU), 2016

automatic shadow mask
Detecting and Correcting Shadows in Urban Point Clouds and Image Collections,
Maximilien Guislain, Julie Digne, Raphaëlle Chaine, Dimitri Kudelski, Pascal Lefebvre-Albaret, Proceedings International Conference on 3D Vision, 3DV2016, Stanford, October 2016

Freestyle Sculpting with CompEls
Temporally Coherent Sculpture of Composite Objects
Artur. P. Sampaio, Raphaëlle Chaine,  Creto A.Vidal,  Joaquim B. Cavalcante-Neto
to appear in Elsevier Computer & Graphics Forum, Special Issue of Shape Modeling International (SMI 2016), Geometry Summit in Berlin, June 2016

WISH and Skelettons
Identifying Perceptually Salient Features on 2D Shapes
L. Larsson,  G. Morin, A. Begault, R. Chaine, J. Abiva, E. Hubert, M. Hurdal, M. Li, B. Paniaga, G. Tran, M.P. Cani

Chapter of the book Research in Shape Modeling 
Kathryn Leonard, Sibel Tari Editors
Springer Publishing Company, Incorporated ©2015
January 2015,
ISBN:3319163477 9783319163475

Related event : Women in Shape (WiSh) : Modeling Boundaries of Objects in 2- and 3-Dimensions (in cooperation with AWM), Los Angeles, July 2013. M.P. Cani and myself were the team leaders of a group who worked on Representing and editing self-similar details on 3D shapes. This paper extends the proposal of the workshop.

Bremen after decompression
Self-similarity for accurate compression of point sampled surfaces
Julie Digne, Raphaëlle Chaine, Sébastien Valette
in Computer Graphics Forum,
Wiley, Vol. 33, Number 2,
Proceedings Eurographics 2014
DOI 10.1111/cgf.12305

GIS terrain for Web clients
Sculpting multi-dimensional nested structures
L. Stanculescu, R. Chaine, M-P. Cani, K. Singh
Computer & Graphics
Proceedings of Shape Modeling International (SMI2013), Bornemouth, UK, 2013

GIS terrain for Web clients
Simplification and Streaming of GIS Terrain for Web Clients
F. Cellier, P-M. Gandoin, R. Chaine, A. Barbier Accary, S. Akkouche.
ACM Press
ACM International Web3D Conference, Los Angeles, 2012
Web 3D - Random Accessible Progressive Compression

Effective Shapes Generation for Bayesian CAD Model Reconstruction
A. Bey, R. Chaine, R. Marc, G. Thibault
Eurographics Digital Library
Proceedings of 3D Object Retrieval (3DOR), Cagliari, 2012

Sculpting Meshes with Self-Adaptive Topologyy
Lucian Stanculescu, Raphaelle Chaine, Marie-Paule Cani,
Computers & Graphics 35(3), Elsevier
Proceedings of Shape Modeling International (SMI2011), Herzliya, Israel, 2011

Mesh Compression
Progressive Compression
Incremental Refinement Complete model

Progressive Lossless Mesh Compression Via Incremental Parametric Refinement
Sébastien Valette, Raphaëlle Chaine, Rémy Prost.
Computer Graphics Forum, no. 5, pp. 1301–1310,
Proceedings of Symposium on Geometry Processing (SGP2009), Berlin, July, 2009

evolving Deulaunay 3D
Dynamic Delaunay Tetrahedralisation of a Deforming Surface
Jean-Baptiste Debard, Romain Balp, Raphaëlle Chaine
The Visual Computer, 2007

Efficient spherical harmonics representation of 3D objects.
M. Mousa, R. Chaine, S. Akkouche and E. Galin
PG07, 15th Pacific Graphics conference, Maui, USA, 2007
pp. 248-257

A Streaming Algorithm for Surface Reconstruction
Rémi Allègre, Raphaëlle Chaine, and Samir Akkouche
Eurographics Symposium on Geometry Processing 2007



Mesh Connectivity Compression Using Convection Reconstruction
Raphaëlle Chaine, Pierre-Marie Gandoin and Céline Roudet
In ACM Symposium on Solid and Physical Modeling (ACM SPM) 2007

An extended version of this paper appeared in
Reconstruction Algorithms as a Suitable Basis for Mesh Connectivity Compression
Raphaëlle Chaine, Pierre-Marie Gandoin and Céline Roudet
IEEE Transactions on Automation Science and Engineering,
Volume 6, Issue 3

A Dynamic Surface Reconstruction Framework for Large Unstructured Point Sets
Rémi Allègre, Raphaëlle Chaine, and Samir Akkouche
IEEE/Eurographics Symposium on Point-Based Graphics 2006

An extended version of this paper appeared in Computers & Graphics, vol. 31, issue 2.

Conference version

Extended version

Texture Transfert
Frequency-Based Representation of 3D Point-Based Surfaces Using the Spherical Harmonics.
M. Mousa, R. Chaine, and S. Akkouche
ICCVG'06, International Conference on Computer Vision and Graphics 2006
Journal of Machine Graphics and Vision MGV

Direct Spherical Harmonics Transform of a Triangulated Mesh
M. Mousa, R. Chaine, and S. Akkouche
Journal of Graphics Tools 2006
Volume 11, Issue 2, pages 17-26.

The HybridTree: Mixing skeletal implicit surfaces, triangle meshes,
and point sets in a free-form modeling system

Rémi Allègre, Eric Galin, Raphaëlle Chaine, and Samir Akkouche
Graphical Models
Volume 68, Issue 1, Pages 42-64, January 2006. SMI'04 special issue.

Spherical harmonics (Bunny) Spherical harmonics (Armadillo)
Frequency-Based Representation of 3D Models using Spherical Harmonics
M. Mousa, R. Chaine, and S. Akkouche
The 14-th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision
Volume 14, Pages 193-200, January 2006, Czech Republic.

Convection-Driven Dynamic Surface Reconstruction
Rémi Allègre, Raphaëlle Chaine, and Samir Akkouche
Shape Modeling International 2005

A geometric convection approach of 3D reconstruction
Raphaëlle Chaine
ACM International Conference Proceeding Series,
Proceedings of the Eurographics/ACM SIGGRAPH Symposium on Geometry processing, SGP2003, pp. 218-229, June 2003

(in french)

Les années précédentes, j'ai également effectué les enseignements suivants : J'ai également enseigné pendant 3 ans au Département Informatique de l'Université de Nice Sophia-Antipolis. Auparavant, j'avais déjà enseigné à l'Université Claude Bernard de Lyon en tant que vacataire (tout au long de ma thèse), puis en tant qu'ATER. Je suis ainsi intervenue dans des cours et TD/TP de programmation (C, C++, Pascal), d'algorithmique, de théorie des graphes, de bases de données, de systèmes d'information, et d'initiation à l'infographie, auprès d'étudiants de Deug (Informatique et Miage), d'IUT, ainsi que de Licence et de Maîtrise (Informatique et Miage).
Raphaëlle's research interests include 3D geometric modelling and computational geometry. After completing her PhD in computer science from the Université Claude Bernard in France in the domain of point set surfaces analysis, Raphaëlle joined the PRISME team at INRIA Sophia Antipolis as she got hired by the Université de Nice as an associate professor. During 3 years, she focused her work on 3D reconstruction and computational geometry. Since 2003, Raphaëlle is now involved in the LIRIS (CNRS) research laboratory and the University of Lyon, Université Claude Bernard Lyon 1. She is deeply involved in the animation of the LIRIS research team GeoMod that she is now heading. She obtained a professorship in Computer Science in september 2013. She graduated with an engineer degree of the Ecole Centrale of Lyon, with a third year specialisation in Applied Mathematics at the Ecole Centrale of Paris in France. 
Educational background

Previous web page
E-mail any comment