VENISE
transversal action on V&AR
Virtual ENvironment for Immersive Simulation and Experiments |
|
LIMSI-CNRS,
Université Paris-Sud, B.P. 133, 91403 Orsay cedex (France)
Contact : Patrick.Bourdot@limsi.fr - http://www.limsi.fr/venise
|
|
VENISE is a research
team in Virtual and Augmented Reality (V&AR) that transversely structures
the pluri-disciplinary scientific activities of the LIMSI-CNRS lab in
this field. At the present time, its research program is organized as
follows:
- 5 research topics : Distributed architectures and cluster solutions; Models
for multimodal interaction in V&AR; Matching Real and Virtual worlds
(optimization of IR tracking systems, design of AR interface for remote
driving); Management of data complexity (dynamic LODs); Paradigms and metaphors, cognitive and usability aspects (for instance, the “HCnav” system
published at VR 2002 for free-hand control of the virtual navigations).
- 5 applications : Computer Fluid Dynamics; Bio-informatics; CAD; Remote
driving; Virtuality, Art and Design |
SOME EXAMPLES OF VENISE ACTIVITY |
|
EVI3D : SOFTWARE PLATFORM FOR « NATURAL » INTRACTIONS IN VE
Developed by the VENISE team, EVI3D is the software platform presently
used by all the V&AR applications of the LIMSI-CNRS lab. In
addition to its geometric library allowing the use of various
Virtual Environments (CAVE, Workbench…) this software platform
proposes a multi OS distributed architecture for the multimodal
“fusion” of input events coming from VE devices as
well as recognition systems (6DOF sensors, Wand device, Data glove,
voice and gesture recognition systems…). Current researches
on the EVI3D platform now focus on the multimodal “fission”
of the output information on visual, haptic and 3D audio feedbacks |
|
|
| |
VRAD
: MULTIMODAL VR-CAD and REACTIVE OBJECTS
Many CAD systems using Virtual Reality are limited by WIMP user interface
paradigms. Thanks to the EVI3D architecture, this demo is first a
feasibility proof on “natural” interactions for immersive
CAD. In addition to the stereoscopic perception and direct 3D interaction
using 6DOF trackers, this demo supports multimodal interactions based
on voice recognition. On the other hand such immersive interactions
suppose more “reactive” 3D objects. To this end, we show
how a dedicated data structure developed by the VENISE team makes
it possible for 3D objects to interact with the user according to
their CSG as well as B-Rep structures but also by using form features
properties and persistent naming. |
|
ADN-VIEWER : IMMERSIVE
EXPLORATION OF GENOMES
DNA sequences are often represented by a linear succession of
letters or nucleotides (A, C, G and T). Conversely, the 3D representation
provides on one hand a global vision of a chromosome and on other
hand, a clear distinction between different zones within a chromosome
(for instance in term of compaction). However, visualization on
traditional workstation remains difficult because of the huge
size of data and interaction with biological objects is limited.
This genomic VR application shows that immersive navigation allows
a global and local exploration of DNA sequences. Moreover, this
application also authorizes co-operative work between several
users (specialists in the field or not) thanks to oral communication
between users or through the observation of gestures of the other
participants. |
|
|
|
MECAFLUX
: COMPUTER FLUID DYNAMICS IMMERSIVE STUDY
In this field, the information to be processed consists of vectors
representing physical quantities (velocity, pressure, temperature,
scalar gradients etc...) sampled on a three-dimensional mesh. The
typical size of these databases is about a million points for each
time instant, so that the dynamic data represent an extremely heavy
load for the computation process. At its current state, this application
allows static databases to be visualized in a stereoscopic mode. The
increasing complexity of the studied phenomena requires developing
more efficient software for the immersive exploration of spatio-temporal
flows. In this context, one of our research goals is to develop solutions
in terms of software architecture and management of these complex
scenes (dynamic LoDs). |
|
|
Equipe Webmestre
