Résumé des résultats (Abstract)
(Anglais)
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The main goal of the COVEN project was to define a new platform, which will be able to deal with 3D, shared environment. This platform is based on two existing software called dVS (from Division company) and Dive (Swedish Institute of Computer Science) in order to take benefit of their experience in the 3D shared environment field. Basically, these kinds of application permit to people, who are at different geographical places, to share a common 3D virtual world. Each client has a graphical representation called an 'avatar'.
The main task of LIG was to integrate his knowledge on virtual humans modeling and animation in both systems, dVS and Dive, in order to increase the reality of these 3D shared world. First, LIG converted his human representation in both specific formats, dVS and Dive formats. Through this first step, LIG obtained in both dVS and Dive applications a representation of each client connected to the 3D shared world, which is closest to a real human. Second, LIG developed an external system to control these 'avatars' and to make them less static. Because virtual human's animation is one of the main research areas of LIG, a software was developed, independently of dVS and Dive, based only on the internal representation of virtual body. This system is connected to dVS or Dive by using a shared memory segment through which information for the body animation is sent to the application from the external body controller program. The body representation can then walk, grasp an object in the 3D shared world, or play a define animation which increases the way each client can communicate with each other in this 3D virtual world. LIG has also contributed a lot to MPEG-4 and HANIM in the framework of COVEN.
Publications
T.K.Capin, J.Esmerado, D.Thalmann, Dead-reckoning algorithms for streaming virtual human data, IEEE Transactions on Circuits and Systems for Video Technology, Vol.9, No3, 1999, pp.411-414.
T.K.Capin, D.Thalmann, Controlling and Efficient coding of MPEG-4 Compliant Avatars, Proc.IWSNHC3DI'99, Santorini, Greece
C.Babski, D.Thalmann, A Seamless Shape For HANIM Compliant Bodies, Proc. VRML 99, ACM Press, 1999, pp.21-28.
V. Normand, C. Babski, S. Benford, A. Bullock, S. Carion, N. Farcet, E. Frecon, J.Harvey, N. Kuijpers, N. Magnenat-Thalmann, S. Raupp-Musse, T. Rodden, M. Slater, G. Smith, A. Steed, D. Thalmann, J. Tromp, M. Usoh, G. Van Liempd, N. Kladias, The COVEN project: exploring applicative, technical and usage dimensions of collaborative virtual environments, Presence: teleoperators and virtual environments, MIT Press, Vol.8, No2, 1999, pp.218-236.
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