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Proceedings Paper

Collaborative design using distributed virtual reality over the Internet
Author(s): Fabien Costantini; Christian Toinard; Nicolas Chevassus; Francois Gaillard
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Paper Abstract

Efficient collaborative virtual environments are missing. First, current solutions do not support mobility to more easily from a disconnected work to a meeting. Second, they do not preserve the consistency or they limit the parallel working. Third, a client-server approach is inefficient in many ways. It introduces a bottleneck and a point of failure in the system. At last, requiring a specific Quality of Service (QoS) from the under laying network limits the ease of deployment. Paper answers these shortages. It enables to distribute a global scene tree among several private spaces. A worker carries out a disconnected work to improve his private space while satisfying protection rules. These different puzzle pieces assemble automatically into a global scene tree during a meeting work. Workers modify in real-time the shared scene. Real time awareness, parallel working and work persistency are provided. A consistency property guarantees the work progression. The solution is fully distributed. Full replication and multicasting improve the performances. A connection facility solves the connectivity problem. It switches automatically from multicast to point-to-point. At last, security is addressed. Standard and secure email enable authentication and distribution of a session key. A re-keying protocol assures confidentiality without requiring communication entities to process X509 certificates.

Paper Details

Date Published: 27 December 2000
PDF: 12 pages
Proc. SPIE 4311, Internet Imaging II, (27 December 2000); doi: 10.1117/12.411901
Show Author Affiliations
Fabien Costantini, Ctr. d'Etudes et de Recherche en Informatique/CNAM (France)
Christian Toinard, Ctr. d'Etudes et de Recherche en Informatique/CNAM (France)
Nicolas Chevassus, European Aeronaut Defence and Space Co. N.V. (France)
Francois Gaillard, European Aeronaut Defence and Space Co. N.V. (France)

Published in SPIE Proceedings Vol. 4311:
Internet Imaging II
Giordano B. Beretta; Raimondo Schettini, Editor(s)

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