Stefanie Hahmann


Picture Stefanie Hahmann
Professor at the University Grenoble INP – Ensimag                  

Laboratoire Jean Kuntzmann LJK, member of the INRIA team Imagine.


Prof. Dr. Stefanie Hahmann INRIA – LJK (Project Imagine) 655 av. de l’Europe 38334 Saint Ismier (France) Tel : (+33) 476 61 55 54 email: Stefanie.Hahmann @

logo SMA logo GTMG Logo GDR IMlogo GDR IGRV logo-SIAM logo MSTII

publications (link)

35 Journal papers (international, refereed), 60 Conference papers (refereed, selection committee), 13 Books and proceedings edited, 4 Book chapters,



CLHMC-SMI16The 2D Shape Structure Dataset: A User Annotated Open Access Database github(Project page),


sujets de thèse 2016

  • Sculpture virtuelle : création et modifications de formes à l’aide de systèmes immersifs de type CAVE (position closed)
  • Sculpting and animating developable surfaces with video embedding (position closed)


service activities

Associate Editor of Computers & Graphics (CAG)

Associate Editor of Computer Aided Design (CAD)

Solid Modeling Association executive board member

Chair of GTMG, the French Geometric Modeling working group (GDR-IM and GDR-IGRV)

Member of executive board of GDR IGRV

research topics in Geometric Modeling and Computer Graphics

Sketch-based modeling: garment design, terrain editing, developable surfaces,

Approximation of developable surfaces, applications to garment design Modeling and animation of crumpling paper,

Surface reconstruction from micro-sensors,

Animation of deformable objects with skinning,

Surface splines, G1 interpolation of quad meshes, G1 triangular splines,

CAD applications: computing interface in assemblies, Idealization transforms, extraction of generative processes from B-rep shapes,

Multiresolution curves and surfacesHierarchical surface models,

Deformation of surfaces: volume preserving FFD, Morphing, Simplification,

Surface Interrogation: generalized focal surfaces,

Fairing algorithms for NURBS.


Habilitation, 2001, Institut National Polytechnique de Grenoble

Ph.D. Computer Science, 1994, University Kaiserslautern, Germany

M.S. Applied Mathematics, 1989, ENS Cachan and University Paris VI, France

M.S. Mathematics and Computer Science,1990, TU Braunschweig, Germany

B.S. Mathematics, 1986, TU Braunschweig, Germany

appointments held

Since 2006 Professor at Grenoble INP – Ensimag
2008 – 2009 Guest Professor, TU Kaiserslautern
1995 – 2006 Assistant Professor,  Institut National Polytechnique de Grenoble
1991 – 1995 Wissenschaftliche Mitarbeiterin, Universität Kaiserslautern

university and department activities

Chair of University Department, Mathematical Modeling, Images and Simulation MMIS at Ensimag-Grenoble INP

Responsable de Spécialité Maths-Info de la Grenoble Graduate School MSTII

Elected member of the administrative council of  l’UMR LJK – Laboratoire Jean Kuntzmann

Recruitment committees at French Universities, sections 26, 27, since 2009

Comité des etudes doctorales at Inria Rhone-Alpes

recent responsabilities

Vice-Chair of SIAM Activity Group on Geometric Modeling (2011-2013)

Program Director of SIAM Activity Group on Geometric Modeling (2009-2011)

Member of the Conseil d’Administration of AFIG.

Membre CSE INPG, sections 25,26,27 (1998-2002, 2002-2006)

Vice-Présidente CSE INPG, sections 25,26,27 (2002-2006)

Membre Conseil d’Administration Ensimag (1998-2002, 2002-2006)

Membre Conseil Scientifique de l’INPG (2003-2006)

scientific activities

Organisation of international Dagstuhl Seminars on Geometric Modeling at Leibniz Center for Informatics, Germany

2014 co-organizers: F. Chen, T.Dokken, T.Grandine, S. Hahmann 2011 co-organizers: T. Grandine, S. Hahmann, J.Peters, W.Wang 2008 co-organizers: G. Farin, S. Hahmann, J.Peters, W. Wang 2005 co-organizers: G.Brunnett, G.Farin, R. Goldman, S.Hahmann 2002 co-organizers: G.Brunnett, G.Farin, R. Goldman, S.Hahmann

Technical Program Chair

SPM 2017, ACM Symposium on Solid and Physical Modeling, Berceley, part of 3SPM 2017, International convention on shape, solid, structure & physical modelling,

SPM 2016ACM Symposium on Solid and Physical Modeling, Berlin,

SPM 2012, ACM Symposium on Solid and Physical Modeling, Dijon

GD/SPM 2011, SIAM Conference on Geometric and Physical Modeling, Orlando IEEE VisSym 2003, Grenoble

General Chair

2013 SIAM Conference on Geometric and Physical Modeling (GD/SPM13), Denver, USA IEEE VisSym 2003, Grenoble

IPC (International Program Committee)

Eurographics 2011Eurographics 2013Eurographics 2014Eurographics 2016,  Eurographics 2017CAD/Graphics 2013

Technical program committee member

SGP 2017, SMI 2017, SMI 2016, CGI 2015, SIAM GD/SPM 2015, SPM 2014, CGI 2014, CGI 2013, SMI 2013, SIAM GD/SPM 2013, SPM 2012. SMI 2011, SIAM GD/SPM 2011, SMI 2010, GMP 2010, SPM 2010, SIAM GD/SPM 2009, GMP 2009, SMI 2009, SMI 2008, PG 2008, PG 2007, CAD 2007, SIAM GD 2007, SMI 2006,  PG 2005, SMI 2005, IEEE Visualization conference proceedings 1997, 1998, 1999, 2000, Curves and Surfaces, AFA, 1996, 1999

Invited Speaker:

Keynote Speaker, 2009 SIAM/ACM joint conference on Geometric and Physical Modeling, San Francisco (USA) International workshop on Industry CAD Challenges 2007, FHG-IGD Darmstadt (Germany) 6th Israel-Korea Conference, 2005, Haifa (Israel) IMA workshop on Geometric Design, 2001, Institute of Mathematics and Applications, Minneapolis (USA) Invitation to Dagstuhl Seminars on Scientific Visualization 1994199720002007LZI Schloss Dagstuhl Invitation to Dagstuhl Seminars on Geometric Modeling 199319961999, LZI Schloss Dagstuhl

Member of FP6 NETWORK OF EXCELLENCE 2004-2008 – AIM@SHAPE. EU Contract No. 506766.

Member of RESEARCH TRAINING NETWORK (RTN) 2000-2004 – MINGLE. EU Contract No. HPRNCT-1999-00117.

Ph.D. students

Youna Le Vaou (Cifre) 2017-2020, en cours

Amélie Fondevilla (MENRT) 2016-2019, en cours

Tibor Stanko (contrat doctoral du CEA) 2014-2017, en cours

Camille Schreck (ERC Expressive) 2013-2016, soutenance prévu mi-octobre 2016.

Leo Allemand-Giorgis (MENRT) 2012-2015, soutenu le 16 juin 2016.

Flavien Boussuge (Cifre EADS) 2011-2014, Product Manager Acoustic Simulation a Siemens PLM

Christopher Weber (DFG-IRTG 1311) 2008-2011, PostDoc at UC Davis

Damien Rohmer (MENRT) 2007-2011, Thesis, Maître de Conférences CPE Lyon

Melanie Cornillac (MENRT) 2006-2010, R&D Metrologic Froup,

Basile Sauvage (MENRT) 2002-2005, Thesis (27.5MB), Maitre de Conferences, ULP Strasbourg

Alex Yvart (CNRS-BDI) 2001-2004, Thesis (8MB), Renault, Chef de projet

Riadh Taleb (funding by foreign government) 1997-2001, enseignant de Mathématiques

teaching activities at Ensimag

Ensimag stands for Ecole Nationale Supérieure d’Informatique et de Mathématiques Appliquées de Grenoble. University and Department Responsabilities:

depuis 2013 Responsable de la filière MMIS (chair of University Department, Mathematical Modeling, Images and Simulation)
2003 – 2009 Responsable de la 3ème année Ensimag
2004 – 2009 Responsable de specialite Math-Info du DRT a l’INPG
2006- 2007 Responsable des Relations industrielles
2002 – 2005 Responsable filière 3A Ensimag: (IRV) Images er Realité Virtuelle.
1997 – 2001 Responsable filière 3A Ensimag: (MCS) Modélisation, Calcul et Simulation


Méthodes Numériques, L3, 36h Cours et TD, Projet // Modélisation Géométrique, M1, 36h cours et TD, mini-projet // Visualisation Scientifique, M2 // Modélisation Surfacique, M2, 36h Cours, mini-projet // Projets Images et Calcul Scientifique, M1

past lectures:

2001-2003 Département Télécom : Algorithmique, M1 Algorithmique et structures de données, M1 2002-2004 Design Géométrique (Filière MCS), M2 1995-1998 Computational Geometry, M2 1995-2001 CAGD et Modèles Géométrique (Filière MCS), M2 1995-2004 Stage de Programmation Scientifique, M1


Page Etudiants (Downloads)

Publications Stefanie Hahmann

New (2016/17)   Computing Contour Trees for 2D Piecewise Polynomial Functions. Girijanandan Nucha, Georges-Pierre Bonneau, Stefanie Hahmann, Vijay Natarajan, IEEE/EG EuroVis 2017, Computer Graphics Forum 36 (3), pp.12, (2017). Interactive paper tearing. Camille Schreck, Damien Rohmer, Stefanie Hahmann, Eurographics 2017, accepted for publication in Computer Graphics Forum 36 (2), pp.12, (2017). Projet Page   Surfacing …

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