Team IGG : Computer Graphics and Geometry

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L’équipe IGG est la première équipe de recherche en informatique associée au CNRS à avoir été créée à Strasbourg, sous l’impulsion de Jean-François Dufourd et Jean Françon, il y a plus de vingt ans.  
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__NOTOC__
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[[fr:Accueil]]
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[[File:Igg.png|left|120px]]
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{{Image_Cadre|LapinsIGG.jpg|right|300}}
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Geometry is the core of the '''IGG''' group (Computer Graphics and Geometry) activity as in other national and international computer graphics research groups. Within '''IGG''', all researchers share the same vision of object representation. This vision separates the topological representation, or more generally the combinatorial aspects, from the embedding representation defining the geometry. This vision is the source of originality and strength of the research within the group.
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Research, within the group, explore geometry and its involvement in shape modeling with adaptive combinatorial models, multiresolution, embedded with subdivision surfaces. Tactics for formal specification, resolution of geometrical constraint systems and geometry proofs are also developped. It leads to new problems for rendering and interaction in virtual environments and its applications reside in fields such as
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computer-assisted teaching, medical simulation, or digitization of heritage.
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The acquisition techniques of the shape, appearance and movement have significantly increased the quality and resolution of models. But the race to the realism requires visual richness ever more, we are looking through adequate levels of detail for the shape, a sophisticated background for appearance and transposition of movements acquired on a reference model.
  
[[Image:LapinsIGG.jpg|right|thumb|300px]] Depuis une bonne quinzaine d’années, cette équipe est constituée d’une dizaine de permanents. En 10 ans, depuis que Dominique Bechmann en a pris la responsabilité, l’équipe a connu un renouvellement quasi-complet : seuls Dominique Bechmann, Jean-François Dufourd et Pascal Schreck, alors maître de conférences, étaient déjà dans l’équipe en 1997. Différents événements, à savoir le départ de nombreux chercheurs pour des laboratoires de Poitiers (Eric Andrès PR, Yves Bertrand PR, Laurent Fuchs MC, Pascal Lienhardt PR), Limoges (Djamchid Ghanzanfarpour PR) et Clermont-Ferrand (Jean-Pierre Réveilles PR), l’intégration de la géométrie discrète et de la morphologie mathématique dans l’équipe MIV du coté du passif, et le retour de Jean-Michel Dischler de Limoges sur un poste de professeur en 2001 et l’intégration de huit nouveaux maîtres de conférences au cours du quadriennal du coté des apports, ont considérablement recomposé cette équipe et redessiné ses contours scientifiques.
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The IGG group aims to define efficient geometric models, taking into account a wide range of data (constraints, medical imaging, digitization, motion capture), to conceive and reproduce the shape, appearance and movement of 3D objects for visualisation, simulation and interaction in virtual environments. These goals are articulated around three complementary themes :
  
Depuis la précédente évaluation en 2003, l’équipe IGG a recentré ses activités de recherche autour de son cœur de métier : la modélisation géométrique, qu’elle conjugue désormais sous tous ses aspects. C’est plus précisément l’objet du thème 1, modélisation, construction et preuves en géométrie, auquel participent les quatre professeurs de l’équipe ainsi que cinq maîtres de conférences. De plus, Sylvain Thery, ingénieur de recherche Ministère recruté en 2005 travaille sur une action transverse aux différentes opérations de ce thème via la conception et l’implantation d’une plate-forme logicielle de modélisation géométrique.
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The '''Computer Graphics Group''' is structured in three themes:
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* [[Specifications, Constraints and Proofs in Geometry|Specification, Constraints and Proofs in Geometry]]:
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[[Specifications, Constraints and Proofs in Geometry_Assessment2016-2021|'''Assessment 2016 - 2021''']] //
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[[Specifications, Constraints and Proofs in Geometry|Assessment 2011 - 2016]]
  
Par ailleurs, le programme mobilisateur RéVA a permis à l’équipe de consolider son expertise dans les domaines de la réalité virtuelle et de la simulation. Le thème 2, visualisation, interaction et simulation, fédère ces activités plus récentes qui mobilisent trois des quatre professeurs de l’équipe ainsi que cinq maîtres de conférence. Un dispositif matériel de réalité virtuelle de type workbench accueille les différents développements des participants à ce thème. En 2007, le recrutement prévu d’un ingénieur de recherche CNRS va permettre de pérenniser ce thème grâce à la mise en commun des ressources via notamment le développement d’une plate-forme logicielle de réalité virtuelle et de ses applications scientifiques, en particulier les applications médicales.
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* [[Geometric Modeling, Simulation and Interaction|Geometric Modeling, Simulation and Interaction]]:
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[[Geometric Modeling, Simulation and Interaction_Assessment2016-2021|'''Assessment 2016 - 2021''']] //
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[[Geometric Modeling, Simulation and Interaction|Assessment 2011 - 2016]]
  
[[fr:Accueil]]
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* [[Appearance and Movement|Appearance and Movement]]:
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[[Appearance and Movement_Assessment2016-2021|'''Assessment 2016 - 2021''']]  //
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[[Appearance and Movement|Assessment 2011 - 2016]]
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Starting in 2024, the team will be organized into four themes:
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* Proofs in Geometry
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* [[3D Geometry and Animation]]
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* Textures, Rendering and Visualization
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* [[Human-Machine_Interaction_and_Virtual_Reality|Human-Computer Interaction and Virtual Reality]]
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'''Keywords:''' computer science, shape modeling, proofs and specifications, virtual reality, rendering
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Latest revision as of 16:46, 13 September 2023

Igg.png
LapinsIGG.jpg

Geometry is the core of the IGG group (Computer Graphics and Geometry) activity as in other national and international computer graphics research groups. Within IGG, all researchers share the same vision of object representation. This vision separates the topological representation, or more generally the combinatorial aspects, from the embedding representation defining the geometry. This vision is the source of originality and strength of the research within the group.

Research, within the group, explore geometry and its involvement in shape modeling with adaptive combinatorial models, multiresolution, embedded with subdivision surfaces. Tactics for formal specification, resolution of geometrical constraint systems and geometry proofs are also developped. It leads to new problems for rendering and interaction in virtual environments and its applications reside in fields such as computer-assisted teaching, medical simulation, or digitization of heritage.

The acquisition techniques of the shape, appearance and movement have significantly increased the quality and resolution of models. But the race to the realism requires visual richness ever more, we are looking through adequate levels of detail for the shape, a sophisticated background for appearance and transposition of movements acquired on a reference model.

The IGG group aims to define efficient geometric models, taking into account a wide range of data (constraints, medical imaging, digitization, motion capture), to conceive and reproduce the shape, appearance and movement of 3D objects for visualisation, simulation and interaction in virtual environments. These goals are articulated around three complementary themes :

The Computer Graphics Group is structured in three themes:

Assessment 2016 - 2021 // Assessment 2011 - 2016

Assessment 2016 - 2021 // Assessment 2011 - 2016

Assessment 2016 - 2021 // Assessment 2011 - 2016

Starting in 2024, the team will be organized into four themes:

Keywords: computer science, shape modeling, proofs and specifications, virtual reality, rendering