Raphaëlle Chaine Professeur en Informatique, Professor in Computer Science LIRIS, UMR CNRS 5205 Université de Lyon  Université Claude Bernard Lyon 1 43 Boulevard du 11 Novembre 1918, Bâtiment Nautibus 69622 Villeurbanne Cedex FRANCE

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

Responsability

• Program Chair with Giuseppe Patane of Shape Modeling International (SMI2019),
  International Geometry Summit, 17-21 june 2019, in Vancouver,
• Head of the e-ROMA project founded by ANR,
• Member of the CoNRS Section 7 since september 2016,
  
• Coordinator of the Master2 Image program (Master Informatique Spécialité IMAGE, ID3D) since september 2014.
• Elected member of the council of Fédération d'Informatique de Lyon (FIL) since June 2017.
  
  
  
• Member of the heading committee of GDR IG-RV (fall 2016 - fall 2019),
• Coordinator of the GeoMod team inside the Image Department (LIRIS) from 2006 until January 2015,
  
• Coordinator with Christophe Ducottet of the regional LIMA2 animation project  (ARC6  de la région Rhône-Alpes), which was a lighter version of the regional LIMA project  (Cluster Isle  de la région Rhône-Alpes) that I coordinated with Patrick Lambert,
  
• Responsible for ARC6 (Technologies de l’Information et de la Communication et Usages Informatiques Innovants) Theme 2 (Dispositifs, systèmes, calcul et logiciels) from 2013 to 2017 (Région Rhône-Alpes)
• Annual call for about 15 research thesis grants,
  
• Organization of an annual ARC6 Day (Scientific and Business Meeting Day)
  
  
• Member of the committee for Prix de thèse IG-RV (2017-2018-2019)
• Member of the committee for Prix de thèse Gilles Kahn 2019

• Co-chair with Eric Galin of Eurographics 2017 in Lyon
  
• Member of program committees :
  
• SMI - Shape Modeling International (2007-08, 2010-11, 2013-2019)
• SPM - Solid and Physical Modeling (2007-08, 2012, 2017-2020)
• CGI - Computer Graphics International (2015-17)
• CASA (2016-2020)
  
• Siggraph ASIA Sketches (2010-11), Sibgrapi 2011, Visigrapp (2015-16),
• In France : CORESA  (2010-2017, 2020), REFIG (sélection AFIG de 2011 à 2014), ORASIS 2017-2019
  
• Organisation of international conferences :
  
• SMI2019 (Program co-chair)
  
• Eurographics 2017 (Conference co-chair)
• SGP 2010
  
• Member of the organisation committee of EGSR and HPG 2014, SMI 2007 and CE 2000
• Organisation of French events
• Member of the organisation committee of AFIG 2016
• Organization of Journée Machine Learning Optimisation (december 13th 2016) (ARC6 joint event between SIERRA and LIMA)

• Expertises for HCERES
• CRESTIC (Reims, fall 2016)
• IRIT (Toulouse, 19-21 november 2019)
  

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 :

• Geometric algorithms for interactive virtual sculpture
  
• 3D reconstruction (production of "nice" meshes from huge point sets or slices) and 3D streaming Delaunay-based reconstruction
• Detection and exploitation of surfaces' self similarities (PAPS project)
  
• Triangular meshes compression
• Dynamic meshing of a deforming surface
• 3D modelling by sketching and sculpting
  
• Point set surfaces segmentation (PhD thesis defended in january, 2000)
• Geometric computation with CGAL  (3D Natural neighbors computation, reconstruction from slices, ...)

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

• Tong Fu (since november 2017) (co-supervision with Julie Digne, ANR e-Roma)
  

• Rémi Allègre (2003-2006) (co-supervision with Samir Akkouche)
  
• Mohamed Mousa (2004-2007) (co-supervision with Samir Akkouche)
• Aurélien Bey (2009-2012) (co-supervision with EDF, CIFRE PhD)
• Lucian Stanculescu (2008-2012, defense on september 2013) (co-supervision with Marie-Paule Cani)
• Azzouz Hamdi Cherif (september 2014 - december 2016) (co-supervision with Julie Digne)
• Artur Sampaio (september 2014, defense on 29 august 2017) (co-supervision with Pr. Creto Vidal, Ceara Federal University, Brazil)
• Maximilien Guislain (september 2014, defense on 19 october 2017) (co-supervision with Julie Digne and Technodigit, CIFRE PhD)
• Yohann Bearzi (since september 2015, co-supervision with Julie Digne, ANR PAPS)

• Examiner (18): Tanessi Cortes (18/12/2019), Charles Gueunet (15/02/2019), Stéphane Breuils (17/12/2018), Thomas Caissard (13/12/2018), Cao Vu Bui (11/10/2018), Valentin Rousselet (25/06/2018), Maxence Reberol (23/03/2018), Anthony Cazasnoves (08/12/2015), Florent Wachtel (30/06/2015), Frédéric Claux (20/03/2014), Jérôme Guénard (04/10/2013), Lucie Druoton (04/04/2013), Camille Combier (28/11/2012), Pedro de Castro (25/10/2010), Maria Pentcheva (30/09/2010), Xavier Heurtebise (04/12/2007), Marie Samozino (11/07/2007), Fabrice Orgeret (09/07/2007)
  
• Reviewer (18): Thibault Lescoat (10/03/2020), Pierre Biasutti (04/10/2019), Adrien Kaiser (01/07/2019), Pierre Anquez (12 juin 2019, Nancy), Arnaud Bletterer (10/12/2018), Even Entem (26/10/2018), Thibaud Lambert (18/12/2017), Muhannad Ismaël (12/07/2016), Kun Liu (14/12/2015), Julien Andre (12/02/2015), Thomas Delame (19/09/2014), Rémi Slysz (10/06/2014), Adrien Maglo (10/06/2013), Adrien Bernhardt (03/06/2013), Shuda Yu (03/05/2013), Romain Merland (18/04/2013), Bertrand Pellenard (18/12/2012), Guillaume Vialaneix (26/11/2013)
  

• Reviewer : Vincent Nozick (14/06/2019), Franck Ledoux (30/09/2014)
  
• Examiner : Sébastien Valette (16/05/2019), Julie Digne (28/09/2018), Franck Hetroy (20/11/2015), Frédéric Cordier (29/11/2013)

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)

Abstract (FR-EN)

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)

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)

Selected publications

Click here and here for a complete list.

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mpLBP: A point-based representation for surface pattern description Elia Moscoso Thompson, Silvia Biasotti, Julie Digne, Raphaëlle Chaine Computers & Graphics, vol. 86, pp. 81-92, 2020 mpLBP: An Extension of the Local Binary Pattern to Surfaces based on an Efficient Coding of the Point Neighbours Elia Moscoso Thompson, Silvia Biasotti, Julie Digne, Raphaëlle Chaine Eurographics Workshop on 3D Object Retrieval, 5 may 2019, Gênes (Italy), 8pages.

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Wavejets: A Local Frequency Framework for Shape Details Amplification Yohann Béarzi, Julie Digne and Raphaëlle Chaine  Computer Graphics Forum, vol. 37, #2, pp. 13-24. Eurographics 2018, in Delft Honorable mention of the Gunter Enderle award at Eurographics 2018

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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

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

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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

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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

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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

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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.

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Self-similarity for accurate compression of point sampled surfaces Julie Digne, Raphaëlle Chaine, Sébastien Valette in Computer Graphics Forum, Wiley, Vol. 33, Number 2, p.155-164, Proceedings Eurographics 2014 DOI 10.1111/cgf.12305

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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

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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

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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

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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

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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

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

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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

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

Preprint

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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

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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

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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

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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.

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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.

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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.

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

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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

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Teaching

(in french)

• LIFAP9 puis LIFAPC Algorithmique, Programmation et Complexité (automne 2017)- LIF9 Algorithmique, programmation et complexité (printemps 2003-2007, automne 2008-2016) - Licence Informatique (L3)-
• Licence Informatique (L2) - LIF5 Algorithmique et programmation procédurale (de 2004 à 2008)
• Master Informatique Professionnel (M2) - Modèles mathématiques en traitement d'images (depuis 2004)
  
• Master Informatique Recherche (M2) - Géométrie discrète et géométrie algorithmique
• Master Informatique (M1) (anciennement Maîtrise d'Informatique) - Programmation générique (C++)
• Gamagora M2PRO CIM programmation : UE4 Outils mathématiques et modélisation géométriques (partie Outils mathématiques, maillages)
  
  

Les années précédentes, j'ai également effectué les enseignements suivants :

• à l'UFR d'Informatique de l'Université Claude Bernard de Lyon :
• Unix (TP)
• Algorithmique et programmation en C (Cours, TD et TP)
  IUP Miage et Réseaux 
• Algorithmique, programmation et complexité (Cours, TD et TP)
  Licence Informatique
• Maillages 3D (Cours et TP) 
  DESS CCI Productique, option Bureau d'Etudes
• Permis de Conduire Informatique (TP)
  Deug Tronc commun
• à l'Ecole Centrale de Lyon
• Introduction à la géométrie Algorithmique (Cours)
  

J'ai également enseigné pendant 3 ans au Département Informatique de l'Université de Nice Sophia-Antipolis.

• Programmation en C++ (paradigme de programmation objet et programmation générique) (Cours, TD)
  Maîtrise Informatique
• Programmation en C (Cours et TD)
  IUP MIAGE, Licence Informatique
• Traitement d'Images / Vision par ordinateur (Cours et TD)
  Licence Informatique, Licence Professionnelle
• Algorithmique (TD)
  Deug Math-Info
• Découverte de l'informatique et de la programmation (JAVA) (TP)
  Tronc commun de deug     
  

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).

Resume

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. 

Experience

• Septembre 2013: Professeur des Universités, Département Informatique, Université Claude-Bernard Lyon 1 (Professor)
  et membre du laboratoire LIRIS (Research activity)
  
  
• Septembre 2003: Maître de Conférences à l'Université de Lyon, Université Claude-Bernard Lyon 1 (Associate professor)
  et membre du laboratoire LIRIS (Research activity)
  
  
• 2000-2003 Maître de Conférences à l'Université de Nice (Associate professor)
  
  
• 2000-2003 Membre du laboratoire I3S et de l'équipe PRISME (maintenant Geometrica) de l'lNRIA Sophia-Antipolis (Research activity)
  
  
• 1999-2000 ATER au LIGIM - Université Claude Bernard de Lyon (Lecturer)

Educational background

• Décembre 2011: Habilitation à diriger des recherches, spécialité Informatique (Professorial Thesis in Computer Science),
  "Triangulations pertinentes pour les formes 3D"
  
  
• Décembre 1996-Janvier 2000: Thèse de doctorat à l'Université Claude Bernard de Lyon, spécialité Informatique (PhD in Computer Science)
  "Segmentation d'ensembles non organisés de points 3-D d'une surface, Propagation anisotrope basée sur les graphes"
  

• 1996: Préparation à l'agrégation de Mathématiques
  
  
• 1995: DEA de Sciences Cognitives (Paris VI-EHESS-Polytechnique) (Master's degree in Computer Science), Mention Bien,
  Problème du binding, cohérence temporelle fine
  
  
• 1995: Ingénieur de l'Ecole Centrale
  - tronc commun de l'Ecole Centrale de Lyon
  - année de spécialisation à l'Ecole Centrale de Paris (option Mathématiques Appliquées)
  
  

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