Overview of LIRIS Research Lab: Advancements in Knowledge Systems and Augmented Reality
LIRIS is a prominent research laboratory comprising 270 people, including 100 academic staff and 140 PhD students, with an annual budget of €1.2 million. Established in 2007, it focuses on various scientific axes, including knowledge and complex systems, image and video analysis, and augmented reality applications. Key domains of application include cultural heritage, radiotherapy, digital entertainment, and geometric modeling. LIRIS is dedicated to advancing the integration of technology and research in complex systems to enhance understanding and application in health, arts, and scientific exploration.
Overview of LIRIS Research Lab: Advancements in Knowledge Systems and Augmented Reality
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Presentation Transcript
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)
