GMOD : Geometric Modeling

Keys Words

GParametric surfaces, 3D meshes, digital geometry and topology, shape analysis, constrained modeling





Permanent Members

BAC AlexandraMaitre de Conférences
Courriel :
Telephone : 0491828532
DANIEL MarcProfesseur des Universités
Courriel :
Telephone : 0491828525
DESBENOIT BrettMaitre de Conférences
Courriel :
Telephone : 0413552179
GONZALEZ-LORENZO AldoMaitre de Conférences
Courriel :
MARI Jean-LucProfesseur des Universités
Courriel :
Telephone : 0491828526
MAVROMATIS SébastienMaitre de Conférences
Courriel :
Telephone : 0491828553
RAFFIN RomainMaitre de Conférences
Courriel :
Telephone : 0490522412
REMY ÉricMaitre de Conférences
Courriel :
Telephone : 0490522413
SEQUEIRA JeanProfesseur des Universités
Courriel :
Telephone : 0491828521
THON SébastienMaitre de Conférences
Courriel :
Telephone : 0490525123
URIBE RicardoMaitre de Conférences
Courriel :
Telephone : 0413552189


Phd Studients

BEGUET FlorianDoctorant
Courriel :
CHRISTOFF NicoleDoctorant
Courriel :
Courriel :
GIRARD RémiDoctorant
Courriel :
HOARAU RomainDoctorant
Courriel :
JIN NanDoctorant
Courriel :
JUBERT ManonDoctorant
Courriel :
OLOFSSON NilsDoctorant
Courriel :
Courriel :
ZOPPITELLI PierreDoctorant
Courriel :


Other staff members

ALOUAOUI HanaPost-Doctorant
Courriel :
EL-HAJE NouraPost-Doctorant
Courriel :
KENDE JuliaPost-Doctorant
Courriel :

Scientific Goals

The G-Mod activities cover 3 topics that interact in projects:

Geometrical and topological analysis
The analysis of global or local characteristics derived from geometrical data is the shared foundation of modeling, pairing methods or multi-resolution representations. These works allow shape characterization, recognition of lines, homogeneous areas detection… on various objects (triangle mesh, points cloud, voxels set, topologically-defined abstract objects).

Modeling – reconstruction
This topic add semantic information to geometrical data. These properties are pre-given (declarative modeling) or extracted from the digitized object (characterization). It permits the completion of a multiple-levels constraint set (from data to experts), and requires adapted solving techniques.

Merging data and specific modeling for graphical simulation
In multiple representations model management, merging data and graphical simulation should be based on geometrical modeling. The merging of information enriches data but also introduces redundancy. Whatever the realism of the produced images, or the mean to achieve simulation, the complexity of such an environment is constrained by information transfers. Modeling is then a basis for knowledge representation (semantic data indexation, spacial or temporal tracking).


Web Site

For more detail :


Scientific publications

10 documents

Article dans une revue

  • Jérémie Chalopin, Victor Chepoi, Feodor Dragan, Guillaume Ducoffe, Abdulhakeem Mohammed, et al.. Fast Approximation and Exact Computation of Negative Curvature Parameters of Graphs. Discrete and Computational Geometry, Springer Verlag, In press, ⟨10.1007/s00454-019-00107-9⟩. ⟨hal-02149991⟩
  • Victor Chepoi, Arnaud Labourel, Sébastien Ratel. On density of subgraphs of halved cubes. European Journal of Combinatorics, Elsevier, 2018. ⟨hal-01959093⟩
  • Jérémie Chalopin, Victor Chepoi, Hirai Hiroshi, Damian Osajda. Weakly modular graphs and nonpositive curvature. Memoirs of the American Mathematical Society, American Mathematical Society, In press. ⟨hal-01787197⟩
  • Jérémie Chalopin, Victor Chepoi, Damian Osajda. On two conjectures of Maurer concerning basis graphs of matroids. Journal of Combinatorial Theory, Series B, Elsevier, 2015, 114, pp.1-32. ⟨10.1016/j.jctb.2015.03.004⟩. ⟨hal-02065778⟩

Communication dans un congrès

  • Victor Chepoi, Feodor Dragan, Michel Habib, Yann Vaxès, Hend Alrasheed. Fast Approximation of Centrality and Distances in Hyperbolic Graphs. COCOA 2018 - 12th Annual International Conference on Combinatorial Optimization and Applications, Dec 2018, Atlanta, United States. pp.1-23. ⟨hal-01955263⟩
  • Jérémie Chalopin, Victor Chepoi, Feodor Dragan, Guillaume Ducoffe, Abdulhakeem Mohammed, et al.. Fast Approximation and Exact Computation of Negative Curvature Parameters of Graphs. 34th International Symposium on Computational Geometry (SoCG 2018), Jun 2018, Budapest, Hungary. pp.22, ⟨10.4230/LIPIcs.SoCG.2018.22⟩. ⟨hal-01836063⟩
  • Jérémie Chalopin, Victor Chepoi. A Counterexample to Thiagarajan's Conjecture on Regular Event Structures. ICALP 2017, 2017, Warsaw, Poland. ⟨10.4230/LIPIcs.ICALP.2017.101⟩. ⟨hal-01787205⟩

Pré-publication, Document de travail

  • Jérémie Chalopin, Victor Chepoi. 1-Safe Petri nets and special cube complexes: equivalence and applications. 2019. ⟨hal-01863455v2⟩
  • Jérémie Chalopin, Victor Chepoi, Shay Moran, Manfred K. Warmuth. Unlabeled sample compression schemes and corner peelings for ample and maximum classes. 2019. ⟨hal-02065772⟩
  • Jérémie Chalopin, Victor Chepoi, Feodor F. Dragan, Guillaume Ducoffe, Abdulhakeem Mohammed, et al.. Fast approximation and exact computation of negative curvature parameters of graphs. 2018. ⟨hal-01737445⟩