Pressbook
Some articles in the press:
[intersticesInterstices “S’il prend appui au sol, la verticale de son centre de gravité tombe dans le polygone de sustentation”
dec. 2006
[CNRSLe journal du CNRS “Quand les caméras deviennent intelligentes”
Le journal du CNRS n° 190-191 novembre-décembre 2005 Publications/CNRS.pdf
[JDDLe Journal du Dimanche “A Grenoble, entrez dans la matrice”
july 2004, Publications/JDD04.pdf (...)

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Suivre les mises-à-jour du site
http://www.feedvalidator.org/check.... Vous pouvez suivre les mise-à-jour du site grâce à un fil RSS 2.0. Pour récupérer facilement l’adresse du flux rss, vous pouvez la recopier depuis la boite texte ci-dessous :
Cyber-II sur le fil
http://artis.imag.fr/Projects/Cyber-II/spip.php?page=backend
Lire un flux RSS
Mozilla Firefox sait lire les flux, il suffit trouver le bouton dans l’interface (suivant les versions, dans le coin en bas a droite (...)

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Gallery All images and videos are copyrighted.
Ask Jean-Marc Hasenfratz before use it. Images
Acquisition room
Reconstruction
Interaction
Texturing
“S’il prend appui au sol,... ”
Videos
film réalisé par Arghyro Paouri sur l’oeuvre d’Olivier Perriquet
see also: )i(nterstices info

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Je travaille à une solution simple (via mot de passe) pour accéder à l’Intranet, mais c’est pas vraiment prévu dans le soft que j’utilise :-)
Pour le moment, l’Intranet est hors SPIP et on y accède par la boîte ci-dessous :
Intranet/Private/

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Geometric Modelling of the Virtual Human “Technical Report written by Soha Maad”
Objective
This report elaborates on the various aspects of the geometric modelling of the virtual human to be incrusted in the CYBER-II augmented scene. The report describes the research and practical work undertaken to fulfill the requirements of the study of the movements of a real human to be incrusted in a virtual world. These requirements were identified in the document accessible here. They (...)

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Related ressources
; Name ; Type ; Comment ; GrImage ; Platform ; GrImage (Grid and Image) is a test-bed dedicated to interactive applications. GrImage aggregates commodity components for high performance video acquisition, computation and graphics rendering.; FlowFR ; Library ; The goal of the FlowVR library is to provide users with the necessary tools to develop and run high performance interactive applications on PC clusters and Grids.; Cyber ; Project ; [in french] Le projet (...)

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Results of WP3. Data management and distributed/parallel computing
; Deliverable ; Content ; Results ; 3.1 ; New architectures for multi-cameras vision and multi-projectors rendering ; 3.2 ; Dynamic adjustment of level of detail ; Paper :
AGLLMRR04 “FlowVR, a middleware dedicated to virtual reality applications distributed on clusters or grid environments.” (...)

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Results of WP1. Acquisition and modelling
; Deliverable ; Content ; Results ; 2.1 ; 360 degrees rendering based on texture mapping ; 2.2 ; Smooth shadows ; Papers:
AHLHHS06: “Soft Shadow Maps: Efficient Sampling of Light Source Visibility”
HLHS03: “A survey of Real-Time Soft Shadows Algorithms”; 2.3 ; Lighting interaction with vitual world ; Papers:
SIMP06a: “Bidirectional Instant Radiosity”
SIMP06b: “Non-interleaved Deferred Shading of (...)

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Hardware performance for real-time reconstruction
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Comparative performances of reconstruction times with different graphic cards.
Reconstruction times
One of the largest process in Cyber is dedicated to reconstruction. This task uses massively graphic card features and is done in following steps:
[A] transformation from silhouettes to texture
[B] drawing quads along voxel space with texture projection activated
[C] readback of framebuffer
[D] (...)

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Results of WP1. Acquisition and modelling
; Deliverable ; Content ; Results ; 1.1 ; Acquisition/Calibration of the practical setup ; Cyber: hardware performance for real-time reconstruction Hardware performance for real-time reconstruction; 1.2 ; Extraction of primitives from images ; 1.3 ; Geometric Modelling ; Papers:
MGB06a :“Extension de l’espace d’acquisition pour les méthodes de Shape From Silhouette”
MGB06b: “Shape From Silhouette: Towards a Solution for (...)

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Results
Here’s a list of results that have been produced concerning Cyber-II projects:
WP1. Acquisition and modelling
See results for this workpackage WP3. Data management and distributed/parallel computing - Results

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Publications
2006
[AHLHHS06
AR06
AFMBR06
[BCSJ06->http://perception.inrialpes

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CONTACTS
This project is possible thanks to collaboration between the following teams: ARTIS, ID, LIRIS and MOVI (now PERCEPTION).
Project Leaders:
Jean-Marc Hasenfratz (Project Leader), Assistant Professor (ARTIS) http://artis.inrialpes.fr/ Jean-Mar...
Bruno Raffin , Research Scientist (ID) http://www-id.imag.fr/ raffin/perso.html
Saida Bouakaz , Assistant Professor (LIRIS) http://bat710.univ-lyon1.fr/ bouakaz/ (...)

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WP3. Distributed/parallel computing
A grid of PCs will be used. One of the main aspects is to distribute data and processes efficiently. We propose to set up a software environment that assists in dispatching interactive applications onto such a distributed architecture. It will be based on the NetJuggler II environment, developed by one of the partners. NetJuggler II is based on an execution model of the data-flow type. The user defines modules, which specify entrance and exit ports for (...)

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WP2. Rendering of augmented scene
Different rendering modes exist, from texture mapping to e.g. radiosity solutions. We will address the following approaches.
2.1 360 degrees rendering based on texture mapping
Texture maps coming from different cameras have to be combined in order to visualize the scene from an arbitrary viewpoint. Approaches of so-called view-dependent texture mapping produce good results, but ideally require relatively densely distributed and/or many input images. In our (...)

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WP1. Acquisition and modelling
WP1.1 Acquisition/Calibration of the practical setup
The set of cameras have to be calibrated and their relative position determined. This can be done off-line, but has to be flexible enough to allow a quick re-calibration if the setup has to be changed. Calibration is in principle a solved problem, but complete integration requires solving several practical and procedural issues.
WP1.2 Extraction of primitives from images
Geometric modelling is usually based (...)

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The system will consist of three main workpackages:
W1. Acquisition and modelling. The person to be inserted in the virtual environment is filmed by several cameras. In order to produce graphical renderings of the person in the environment, models must be established for:
Lighting present in the filmed scene, but also in the virtual environment (position and characteristics of light sources)
Photometric properties of the filmed and virtual scenes (so that interactions with light - (...)

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In the context of Augmented Reality applications, the goal of Cyber-II project is to simulate, in real-time, the presence of a person (e.g. a TV presenter or a teacher) in a virtual environment. This simulation consists mainly in visualizing the combined scenario, and possibly in providing tools for interaction between the real person, the virtual environment, and the observer (e.g. TV spectator or pupil). The main overall technical requirements are thus a highly realistic visualization, (...)

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