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45

Franck Hétroy-Wheeler

Position

Professor in computer science at the since september 2017.

This means I am both:

 

 

Contact

Lab. iCube, IGG team

300 bd Sébastien Brant

CS 10413

F-67412 Illkirch Cedex, France

E-mail: hetroywheeler@unistra.fr

 

CV

Diplomas: M.Eng. (diplôme d'ingénieur) Grenoble INP - Ensimag (Univ. Grenoble, 2000), M.Sc. (DEA) in applied maths (Univ. Grenoble, 2000), PhD (doctorat) in signal processing (Univ. Grenoble, 2003), Habilitation (HDR) in computer science (Univ. Grenoble, 2015).

Positions: teaching assistant Univ. Grenoble (2002-2003), postdoc UPC Barcelona (2004), tenured assistant professor (maître de conférences) Grenoble INP - Ensimag/Laboratoire Jean Kuntzmann (2004-2017, EVASION then Morpheo research teams).

 

Teaching

Teaching statement

My teaching philosophy is to help students become autonomous in their learning process. For this purpose, they need to face knowledge, problems and methods of increasing complexity according to Bloom's taxonomy. I strongly believe students can durably understand something only if the learning process follows the main ideas of Jean Houssaye's educational triangle. I also like to make students work in groups in order to confront and increase their soft skills, e.g. following an agile methodology.

 

Responsability

 

Lectures

 

Research

Research statement

My work spans computer vision and computer graphics to computational geometry and topology and to remote sensing. With an overall goal of shape analysis and understanding, my research interests include the acquisition, reconstruction and processing of 3D shapes in motion. I have worked on shapes digitised with laser scanners as well as multi-view stereo systems or medical imagery. These shapes range from human bodies and organs to animals, trees, plants or even mechanical parts. Currently I am especially interested in trees and plants, because of their challenging geometric and topological complexities.

 

Popularisation

Check the presentation I made (in French) about digital geometry processing in 2014 (part 1, part 2). Also check this video by Eric Casella.

 

More details (works before 2016)

 

Keywords

Digital geometry processing, segmentation, reconstruction, geometric and topological feature computation.

 

Projects

Past projects

 

Students

PhD students

Former students

Postdoc
PhD students

 

Software and data sets

Software

Data sets

 

Publications

NEW: Haolin Pan's Master work on plant growth tracking has been accepted for publication and oral presentation at the 3DV 2021 conference (~15% acceptance rate). [paper] [supplemental material] [code] [data]

 

Books1 document

  • Jean-Luc Mari, Franck Hetroy-Wheeler, Gérard Subsol. Geometric and Topological Mesh Feature Extraction for 3D Shape Analysis. Wiley-ISTE, 3, pp.194, 2019, Geometric modeling and applications, Marc Daniel. ⟨hal-02361776⟩

Book sections1 document

  • Franck Hetroy-Wheeler, Jean-Luc Mari, Gérard Subsol. Géométrie et topologie pour les maillages 3D. Jérémie Chalopin; Pierre Guillon. Informatique Mathématique, Une photographie en 2019, CNRS Editions, 2019, 978-2-271-12611-5. ⟨hal-02058296⟩

Journal articles10 documents

  • Li Wang, Franck Hétroy-Wheeler, Edmond Boyer. A Hierarchical Approach for Regular Centroidal Voronoi Tessellations. Computer Graphics Forum, Wiley, 2016, 35 (1), pp.152-165. ⟨10.1111/cgf.12716⟩. ⟨hal-01185210⟩
  • Victoria Fernández Abrevaya, Sandeep Manandhar, Franck Hétroy-Wheeler, Stefanie Wuhrer. A 3D+t Laplace operator for temporal mesh sequences. Computers and Graphics, Elsevier, 2016, Shape Modeling International 2016, 58, pp.12-22. ⟨10.1016/j.cag.2016.05.018⟩. ⟨hal-01318763⟩
  • Georges Nader, Kai Wang, Franck Hétroy-Wheeler, Florent Dupont. Just Noticeable Distortion Profile for Flat-Shaded 3D Mesh Surfaces. IEEE Transactions on Visualization and Computer Graphics, Institute of Electrical and Electronics Engineers, 2016, 22 (11), pp.2423-2436. ⟨10.1109/TVCG.2015.2507578⟩. ⟨hal-01242271⟩
  • Georges Nader, Kai Wang, Franck Hétroy-Wheeler, Florent Dupont. Visual Contrast Sensitivity and Discrimination for 3D Meshes and their Applications. Computer Graphics Forum, Wiley, 2016, 35 (7), pp.497-506. ⟨10.1111/cgf.13046⟩. ⟨hal-01376275⟩
  • Franck Hétroy-Wheeler, Eric Casella, Dobrina Boltcheva. Segmentation of tree seedling point clouds into elementary units. International Journal of Remote Sensing, Taylor & Francis, 2016, 37 (13), pp.2881-2907. ⟨10.1080/01431161.2016.1190988⟩. ⟨hal-01285419⟩
  • Romain Arcila, Cédric Cagniart, Franck Hétroy, Edmond Boyer, Florent Dupont. Segmentation of temporal mesh sequences into rigidly moving components. Graphical Models, Elsevier, 2013, 75 (1), pp.10-22. ⟨10.1016/j.gmod.2012.10.004⟩. ⟨hal-00749302⟩
  • Dobrina Boltcheva, David Canino, Sara Merino Aceituno, Jean-Claude Léon, Leila de Floriani, et al.. An iterative algorithm for homology computation on simplicial shapes. Computer-Aided Design, Elsevier, 2011, Solid and Physical Modeling 2011, 43 (11), pp.1457-1467. ⟨10.1016/j.cad.2011.08.015⟩. ⟨hal-00644410v2⟩
  • Franck Hétroy, Stéphanie Rey, Carlos Andujar, Pere Brunet, Alvar Vinacua. Mesh repair with user-friendly topology control. Computer-Aided Design, Elsevier, 2011, 43 (1), pp.101-113. ⟨10.1016/j.cad.2010.09.012⟩. ⟨inria-00523005⟩
  • Ljiljana Skrba, Lionel Reveret, Franck Hétroy, Marie-Paule Cani, Carol O'Sullivan. Animating Quadrupeds: Methods and Applications. Computer Graphics Forum, Wiley, 2009, 28 (6), pp.1541-1560. ⟨10.1111/j.1467-8659.2008.01312.x⟩. ⟨inria-00365340⟩
  • Franck Hétroy, Dominique Attali. Topological Quadrangulations of Closed Triangulated Surfaces using the Reeb Graph. Graphical Models, Elsevier, 2003, Special issue: Discrete Topology and Geometry for Image and Object Representation, 65 (1-3), pp.131-148. ⟨inria-00001143⟩

Conference papers25 documents

  • Mélinda Boukhana, Joris Ravaglia, Franck Hetroy-Wheeler, Frédéric Larue, Benoit de Solan, et al.. Geometric models for plant leaf area estimation from 3D point clouds: a comparative study. Journées Françaises d'Informatique Graphique, Nov 2020, Nancy, France. ⟨hal-03256446⟩
  • Eric Casella, Romain Rombourg, Pasi Raumonen, Franck Hetroy-Wheeler, Markku Åkerblom. Sensitivity analysis of an automated processing chain and uncertainty in the prediction of tree above ground biomass from TLS data. 3D Tree Models for Forest Dynamics, Jan 2020, Helsinki, Finland. ⟨hal-02374414⟩
  • Katia Mirande, Franck Hétroy-Wheeler, Christophe Godin. High-precision 3D segmentation of plants combining spectral clustering and quotient graph techniques: a multi-level approach. 9th International Conference on Functional-Structural Plant Models, 2020, En ligne, France. ⟨hal-03245673⟩
  • Jinlong Yang, Jean-Sébastien Franco, Franck Hetroy-Wheeler, Stefanie Wuhrer. Analyzing Clothing Layer Deformation Statistics of 3D Human Motions. ECCV 2018 - European Conference on Computer Vision, Sep 2018, Munich, Germany. pp.245-261, ⟨10.1007/978-3-030-01234-2_15⟩. ⟨hal-01763706v2⟩
  • Eric Casella, Pasi Raumonen, Romain Rombourg, Franck Hétroy-Wheeler, Helen Mckay. A comprehensive sensitivity analysis of forest tree mock-up reconstruction methods from phase-shift based tLiDAR point-cloud data. International Conference on Functional-Structural Plant Growth Modeling, Simulation, Visualization and Applications (FSPMA), Dr Xiujuan Wang, Nov 2016, Qingdao, China. ⟨hal-01399491⟩
  • Li Wang, Franck Hétroy-Wheeler, Edmond Boyer. On Volumetric Shape Reconstruction from Implicit Forms. ECCV 2016 - European Conference on Computer Vision, Oct 2016, Amsterdam, Netherlands. ⟨10.1007/978-3-319-46487-9_11⟩. ⟨hal-01349059⟩
  • Jinlong Yang, Jean-Sébastien Franco, Franck Hétroy-Wheeler, Stefanie Wuhrer. Estimation of Human Body Shape in Motion with Wide Clothing. ECCV 2016 - European Conference on Computer Vision 2016, Oct 2016, Amsterdam, Netherlands. pp.439-454, ⟨10.1007/978-3-319-46493-0_27⟩. ⟨hal-01344795v4⟩
  • Aurela Shehu, Jinlong Yang, Jean-Sébastien Franco, Franck Hétroy-Wheeler, Stefanie Wuhrer. Computing temporal alignments of human motion sequences in wide clothing using geodesic patches. 3DV 2016 - International Conference on 3D Vision 2016, Oct 2016, Stanford, United States. pp.185-193, ⟨10.1109/3DV.2016.27⟩. ⟨hal-01367791⟩
  • Georges Nader, Kai Wang, Franck Hétroy-Wheeler, Florent Dupont. Modèle Perceptuel pour la Détection du Seuil de Visibilité des Distorsions sur un Maillage 3D. 28èmes journées de l’Association Française en Informatique Graphique, Nov 2015, Lyon, France. ⟨hal-01245373⟩
  • Dobrina Boltcheva, Eric Casella, Rémy Cumont, Franck Hétroy. A spectral clustering approach of vegetation components for describing plant topology and geometry from terrestrial waveform LiDAR data. FSPM2013 - 7th International Conference on Functional-Structural Plant Models, Jun 2013, Saariselkä, Finland. ⟨hal-00817508⟩
  • Sahar Hassan, Franck Hétroy, François Faure, Olivier Palombi. Automatic localization and quantification of intracranial aneurysms. CAIP - 14th International Conference on Computer Analysis of Images and Patterns, Aug 2011, Seville, Spain. pp.554-562, ⟨10.1007/978-3-642-23672-3_67⟩. ⟨inria-00598491v2⟩
  • Romain Arcila, Kartik Buddha, Franck Hétroy, Florence Denis, Florent Dupont. A Framework for motion-based mesh sequence segmentation. WSCG - International Conference on Computer Graphics, Visualization and Computer Vision, Feb 2010, Plzen, Czech Republic. pp.33-40. ⟨inria-00440672⟩
  • Sahar Hassan, Franck Hétroy, Olivier Palombi. Ontology-Guided Mesh Segmentation. FOCUS K3D Conference on Semantic 3D Media and Content, FOCUS K3D, Feb 2010, Sophia Antipolis, France. pp.5. ⟨inria-00450907v2⟩
  • Romain Arcila, Franck Hétroy, Florent Dupont. État de l'art des méthodes de segmentation de séquences de maillages et proposition d'une classification. CORESA'09 - COdage et REprésentation des Signaux Audiovisuels, Mar 2009, Toulouse, France. ⟨inria-00435858⟩
  • Sahar Hassan, Franck Hétroy, Olivier Palombi. Segmentation de maillage guidée par une ontologie. AFIG 2009 - 22e Journées de l'Association Française d'Informatique Graphique, Nov 2009, Arles, France. ⟨inria-00436610v2⟩
  • Jean-Claude Léon, Franck Hétroy, Leila de Floriani. Propriétés topologiques pour la modélisation géométrique de domaines d'études comportant des singularités non-variétés. CFM'09 - 19ème Congrès Français de Mécanique, Aug 2009, Marseille, France. ⟨inria-00394387v2⟩
  • Franck Hétroy, Cédric Gérot, Lin Lu, Boris Thibert. Simple flexible skinning based on manifold modeling. GRAPP 2009 - International Conference on Computer Graphics Theory and Applications, Feb 2009, Lisbonne, Portugal. pp.259-265. ⟨inria-00339413v2⟩
  • Jean-Claude Léon, Leila de Floriani, Franck Hétroy. Classification of non-manifold singularities from transformations of 2-manifolds. SMI 2009 - IEEE International Conference on Shape Modeling and Applications, Jun 2009, Beijing, China. pp.179-184, ⟨10.1109/SMI.2009.5170146⟩. ⟨inria-00365338v2⟩
  • Ljiljana Skrba, Lionel Reveret, Franck Hétroy, Marie-Paule Cani, Carol O'Sullivan. Quadruped Animation. Eurographics '2008 - 29th annual conference of the European Association for Computer Graphics, Apr 2008, Hersonissos, Creete, Greece. pp.7-23. ⟨inria-00331715v2⟩
  • Grégoire Aujay, Franck Hétroy, Francis Lazarus, Christine Depraz. Harmonic Skeleton for Realistic Character Animation. SCA 2007 - ACM-SIGGRAPH/Eurographics Symposium on Computer Animation, Aug 2007, San Diego, Californie, United States. pp.151-160, ⟨10.2312/SCA/SCA07/151-160⟩. ⟨inria-00151606v2⟩
  • Grégoire Aujay, Franck Hétroy, Francis Lazarus. Construction automatique d'un squelette pour l'animation de personnages. 19èmes Journées de l'Association Française d'Informatique Graphique (AFIG), Nov 2006, Bordeaux, France. ⟨inria-00110047v3⟩
  • Franck Hétroy. Constriction Computation using Surface Curvature. Eurographics (short paper), Aug 2005, Dublin, Ireland. pp.1-4. ⟨inria-00001135v2⟩
  • Franck Hétroy, Dominique Attali. From a Closed Piecewise Geodesic to a Constriction on a Closed Triangulated Surface. Pacific Graphics Conference on Computer Graphics and Applications, J. Rokne, Oct 2003, Canmore, Alberta, Canada, France. pp.394-398. ⟨inria-00001145⟩
  • Franck Hétroy, Dominique Attali. Detection of Constrictions on Closed Polyhedral Surfaces. Eurographics/IEEE TCVG Visualisation Symposium, G.-P. Bonneau, S. Hahmann, C. Hansen, May 2003, Grenoble, France, France. pp.67-74. ⟨inria-00001144⟩
  • Franck Hétroy, Dominique Attali. Topological Quadrangulations of Closed Triangulated Surfaces Using the Reeb Graph. Digital Geometry for Computer Imagery (DGCI), 2002, Bordeaux, France. pp.57-68, ⟨10.1007/3-540-45986-3_5⟩. ⟨hal-02375564⟩

Poster communications1 document

  • Romain Rombourg, Eric Casella, Franck Hétroy-Wheeler, Helen Mckay. A point-cloud classification method to assess biases in tLiDAR-based forest canopy gap fraction estimates. International Conference on Functional-Structural Plant Growth Modeling, Simulation, Visualization and Applications (FSPMA), Nov 2016, Qingdao, China. 2016. ⟨hal-01399489⟩

Reports6 documents

  • Benjamin Allain, Li Wang, Jean-Sébastien Franco, Franck Hetroy-Wheeler, Edmond Boyer. Shape Animation with Combined Captured and Simulated Dynamics. [Research Report] arXiv:1601.01232, ArXiv. 2016, pp.11. ⟨hal-01255337⟩
  • Franck Hétroy. A discrete 3D+t Laplacian framework for mesh animation processing. [Research Report] RR-8003, INRIA. 2012, pp.20. ⟨hal-00710899⟩
  • Romain Arcila, Cédric Cagniart, Franck Hétroy, Edmond Boyer, Florent Dupont. Temporally coherent mesh sequence segmentations. [Research Report] RR-7856, INRIA. 2012, pp.20. ⟨hal-00658060v2⟩
  • Dobrina Boltcheva, Sara Merino Aceitunos, Jean-Claude Léon, Franck Hétroy. Constructive Mayer-Vietoris Algorithm: Computing the Homology of Unions of Simplicial Complexes. [Research Report] RR-7471, INRIA. 2010. ⟨inria-00542717⟩
  • Lin Lu, Franck Hétroy, Cédric Gérot, Boris Thibert. Atlas-Based Character Skinning with Automatic Mesh Decomposition. [Research Report] RR-6406 - Département Images et Signal, -; INRIA. 2008, pp.21. ⟨inria-00202597v4⟩
  • Franck Hétroy, Stéphanie Rey, Carlos Andujar, Pere Brunet, Alvar Vinacua. Mesh Repair with Topology Control. [Research Report] RR-6535, INRIA. 2008, pp.23. ⟨inria-00279919v3⟩

Habilitation à diriger des recherches1 document

  • Franck Hétroy-Wheeler. Segmentation and Skeleton Methods for Digital Shape Understanding. Graphics [cs.GR]. Université Grenoble Alpes, 2015. ⟨tel-01246006v2⟩