About

Since 2024, I am a post-doc at the Catholic University of Louvain in Louvain-la-Neuve (Belgium), where I work on injective deformation of meshes in the context of the X-mesh project, lead by Jean-François Remacle and Nicolas Moës.

I obtained a PhD from the University of Lorraine under the supervision of Etienne Corman and Dmitry Sokolov. I defended my PhD in December 2023.

Research Interests

  • Geometry Processing
  • Meshing
  • Mesh parametrization
  • Deep learning and neural implicit representations

Contact infos

  Email: guillaume.coiffier [AT] uclouvain.be
  Address: Avenue Georges Lemaitre 4, 1348 Ottignies-Louvain-la-Neuve, Belgique
  Office: Euler Building, 2nd floor, A221

Current and past positions

  • [Since Jan. 2024] Post-doc / Research Assistant
    Université Catholique de Louvain, Louvain-la-Neuve, Belgium
    Meshing sharp physical interfaces in finite element simulation
    Member of the X-mesh team lead by Jean-François Remacle and Nicolas Moës

  • [Sep. 2020 - Dec. 2023] PhD Student
    LORIA, University of Lorraine, Nancy, France
    Global parametrization algorithmes for quadmeshing
    Supervisors: Dmitry Sokolov and Etienne Corman
    Thesis defended on December 6th, 2023

  • [Jan. 2020 - June 2020] Research internship
    IMT Atlantique, Brest, France
    Automatic Architecture Search for Deep Neural Networks
    Supervised by Vincent Gripon

  • [Oct. 2019 - Dec. 2019] Research internship
    LORIA, University of Lorraine, Nancy, France
    Constrained mesh fitting on 3D point clouds
    Supervised by Dmitry Sokolov and Nicolas Ray

  • [Feb. 2020 - July 2020] Research internship
    LIRIS, INSA de Lyon, Lyon, France
    Deep neural network simplification using pattern mining approaches
    Supervised by Marc Plantevit, Stefan Duffner and Céline Robardet

  • [May 2018 - July 2018] Research internship
    CHYN, Université de Neuchâtel, Suisse
    Constrained 3D synthesis out of 2D examples using Generative Adversarial Networks
    Encadré par Philippe Renard

  • [May 2017 - June 2017] Research internship
    Inria Rhône-Alpes, Grenoble, France
    Congestion games and Wardrop equilibria
    Supervised by Corinne Touati

Education

[2020-2023] PhD, Global Parametrization Algorithms for Quadmeshing – LORIA, Université de Lorraine, Nancy, France – Under the supervision of Dmitry Sokolov and Etienne Corman

[2016-2020] Ms Student in Computer Science – École Normale Supérieure de Lyon, Lyon, France

[2013-2016] French “Preparatory classes”, Mathematics-Physics-Computer Science – Lycée Henri Wallon, Valenciennes, France

Conferences, Seminars and Workshops

International conferences

  • The Method of Moving Frames for Surface Global Parametrization SIGGRAPH 2024

  • 1-Lipschitz Neural Distance Fields, Symposium on Geometry Processing 2024 [Video]
      🏆 Best Paper Award

  • 3D Geological Image Synthesis from 2D Examples Using Generative Adversarial Networks, Petroleum Geostatistics 2019 [Abstract]

National (French) conferences and workshops

  • Robust Neural Distance Fields using 1-Lipschitz Neural Networks, Rencontres des jeunes chercheurs du groupe de travail en modélisation géométrique, Marseille, 27 mars 2024 [Slides]
      🏆 Best Presentation Award

  • The Method of Moving Frames for Surface Global Parametrization, Journées Françaises de l’Informatique Graphique, Montpellier, November 10th, 2023 [Slides]

  • Ajustement de surfaces paramétriques sur nuages de points, Journées Françaises de l’Informatique Graphique, Nancy (online), November 25th, 2020 [Video]
      🏆 2nd Best Paper Award

Seminars and presentations

  • Improving geometrical data structures under fixed memory budget, talk at Inria Grenoble, France, November 27th, 2024
  • Improving geometrical data structures under fixed memory budget, talk at LIRIS, Lyon, France, November 8th, 2024
  • Parametrization algorithms for quad-remeshing, talk at XLIM, Limoges, France, February 28th, 2024
  • Parametrization algorithms for quad-remeshing, talk at LIS, Marseille, February 16th, 2024
  • Parametrization algorithms for quad-remeshing, talk LIB, Dijon, February 8th, 2024
  • Parametrization algorithms for quad-remeshing, talk at MEMA, Catholic University of Louvain, Belgium, November 16th, 2023
  • Cartan’s method of moving frames for surface parametrization, French annual meeting of young researchers in geometry, Paris, France, October 27th, 2023
  • Towards Global Parametrization in a single optimization, FRAMES Workshop, Nancy, France, August 24th, 2023
  • Computing Valid Global Seamless Parametrizations in 2D and 3D, FRAMES Workshop, Bern, Switzerland (online), December 6th, 2021
Publications

See the list of publications or Google Scholar

Teaching

[2024-2025] Lecturer, École Polytechnique de Louvain

[2022-2023] Teaching Assistant, École des Mines de Nancy

  • Programmation and Data Structures
  • Operational Research
  • Algorithms and Complexity

[2020-2022] Teaching Assistant, Faculty of Sciences and Technology, Nancy, France

  • Algorithms and programmation in Python
  • Coding Project: Video game in C
  • Automata, Grammars and Languages
  • Optimization, Operational Research

[2018-2021] Advisor for the boot camp Girls Can Code!, Lyon, France

Popular Science

  • I take part in Inria’s program Chiche! whose goal is to make each French high school student meet a computer scientist. With this program, I’ve met a dozen of classes in high schools of eastern France between 2021 and 2023.

  • In 2022, I participated in the international French-speaking contest of popular science Ma thèse en 180 secondes, where I got the second best prize of the University of Lorraine for my talk. [Video]

  • During my PhD, I was also involved in a number of events, including the “Fête de la science” in 2022 and 2023 and the European Researchers Night in 2022. In 2023, I also gave a general public conference about geometry processing and maps in High School Louis Vincent in Metz [Video].

Awards