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LIRIS. At a glance …. 270 people 8 (+4) CNRS staff ~100 academic staff 140 PhD students budget: 1.2 M€/year 6 physical locations. LIRIS 2007 =. Scientific presentation. Axis 1. Knowledge and complex systems. Axis 2. Images and videos : segmentation and extraction of information.
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At a glance… 270 people 8 (+4) CNRS staff ~100 academic staff 140 PhD students budget: 1.2 M€/year 6 physical locations LIRIS 2007 = Présentation LIRIS - 31/08/2014
Scientific presentation Axis 1 Knowledge and complex systems Axis 2 Images and videos : segmentation and extraction of information Cultural heritage Computer Science and Health Axis 3 Modeling and augmented reality Transversal Action A Transversal Action B Axis 4 Communicating information systems Présentation LIRIS - 31/08/2014
Application domains Cultural Heritage • EROS 3D et Art3D with Louvre museum • U.E. Art3D (European museums) Life quality • Radiotherapy et hadrontherapy • Cytology • Augmented reality and pain therapy Digital entertainment • Video games • Visual art and architecture
Geometric modeling • Computational Geometry • 3D Reconstruction, dynamic and selective • Compression • Frequency descriptors • Geometric computations (CGAL) • Fractal Geometry • Fractal Reconstruction • Hybrid Modeling
Theme- Mesh quality Local dynamic update +29 134 points42s DAVID3 617 008 points 123 529 points (-96%) 4min 6s
Theme- Fractal model • Fractal approximation of rough shapes, modeler for creation Reconstruction of mountains with fractal model Visual art Martine Rondet -Mignotte
Simulation and augmented reality • Simulation of natural phenomena • Addition of details (simulation of cracks and fractures,of lich growth, of mushrooms, …) • Physical Simulation • Particle systems • Continuous media mechanics • Analysis and quantification of movement • Reconstruction of postures and movements
Theme- Simulation • Simulation of ecosystems and natural phenomena
Theme Simulation-hadrontherapy • Radiotherapy/Hadrontherapy • Moving organs • Movements of tumor Prediction of movement by simulating the behavior
Theme Simulation-Hadrontherapy • Approach FEM
Simulation of deformable objects • Masses/spring interaction • Parameterization • Taking into account rheological parameters • Parallel computing
Theme Simulation- Hadrontherapy • Non rigid image registration Mouvements respiratoires interne
Theme- Posture reconstruction and the track of a character’s movements separation character/background Extraction of a skeletal animation + Voxel model Reconstruction of the envelope: Shape and texture Views calculated from the model and texture
Theme- Posture reconstruction and the track of a character’s movements
Theme- Posture reconstruction and the track of a character’s movements • Augmented reality and “phantom pains” Amputee Adding a virtual animated member in the image (valid member+ EMG) Electromyographic signals (EMG) at the level of residual member
Theme – 3D modeling from photos • 3D avatar reconstruction from 2 photos • 3D face reconstruction face from a picture Shape from shading 3D Photo avec shading 3D
Rendering • Realistic rendering and Perceptual rendering • Light vectors • Spectral approach • Use of vision models • Towards interactive rendering • Use of graphic cards • Use of a Ray Tracer -> « Instant radiosity » + Metropolis -> YACORT (open free ray tracer)
