| Summary: | 碩士 === 淡江大學 === 資訊工程學系 === 86 === Virtual Reality is a new era for computer Multimedia research in
the recent year. Significantly, Virtual Reality is not a new
revolution of computer technique, it is a new type of human-
computer interface which is an integration of existing
technologies such as computer graphics, image procession, sound
effect, and real-time control. The goal of Virtual Reality
technique is to allow the user to fully immerse into the
computerized synthetic world. Virtual Reality is complete new
experience for Multimedia stu Studies of the multi-user virtual
environment over World Wide Web have become a popular topic in
the computer graphics community over the years. VRML is the
modeling language defined for the WWW environment that allows
the user to navigate a three-dimensional virtual world described
by VRML file. However, the interaction among clients, which
navigates the same virtual world, has not been provided yet.
This thesis presents the architecture of a 3D multiple user
virtual reality system over World Wide Web. This system merge
Protocol Data Unit (PDU) and Dead Reckoning technique of
Distributed Interactive Simulation (DIS) with existing WWW
server to provide a general solution for multiple user
interactivity. To further study the behaviors between function
modules which designed in this thesis, we also trace and analyze
the modules of this system with Petri Net technique. According
to the result of analysis with Petri Net technique, the multiple
user virtual reality system over World Wide Web implemented,
called SharedWeb system. Finally, experiment result and
demonstrations of the SharedWeb system will also be introduction
in this paper.
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