Laboratoire d'InfoRmatique en Image et Systèmes d'informationLIRIS UMR 5205 CNRS/INSA de Lyon/Université Claude Bernard Lyon 1/Université Lumière Lyon 2/Ecole Centrale de Lyon
Université Claude Bernard Lyon 1, bâtiment Nautibus43, boulevard du 11 novembre 1918 — F-69622 Villeurbanne cedex
http://liris.cnrs.fr
UMR 5205
Présentation LIRIS - 04/21/23
LIRIS
Présentation LIRIS - 04/21/23 2
At a glance…
270 people8 (+4) CNRS staff~100 academic staff140 PhD studentsbudget: 1.2 M€/year6 physical locations
LIRIS 2007 =
Présentation LIRIS - 04/21/23 3
Scientific presentation
Modeling and augmented realityAxis 3
Knowledge and complex systems
Axis 1
Images and videos : segmentation and extraction of information
Axis 2
Communicating information systemsAxis 4
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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 modelingComputational Geometry
3D Reconstruction, dynamic and selective Compression Frequency descriptors Geometric computations (CGAL)
Fractal GeometryFractal Reconstruction
Hybrid Modeling
Theme- Mesh quality
DAVID3 617 008
points
123 529 points (-96%)
4min 6s
+29 134 points42s
Local dynamic update
Theme- Fractal model
Fractal approximation of rough shapes, modeler for creation
Reconstruction of mountains with fractal model
Visual artMartine 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
ParameterizationTaking into account rheological parameters
Parallel computing
Example
Mouvements respiratoires interne
Theme Simulation- Hadrontherapy
Non rigid image registration
Theme- Posture reconstruction and the track of a character’s movements
separation character /
backgroundExtraction 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 pictureShape from shading
3D
Photoavec
shading
3D
Rendering
Realistic rendering and Perceptual renderingLight vectorsSpectral approachUse of vision models
Towards interactive rendering Use of graphic cards Use of a Ray Tracer -> « Instant radiosity » + Metropolis
-> YACORT (open free ray tracer)
Rendering
Interactive rendering
Interactive rendering
Augmented reality
Augmented reality
