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DOCTORAATSPROEFSCHRIFT - EDM - UHasselt

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CHAPTER1<br />

Defining Interactive Virtual Reality<br />

Applications<br />

In this chapter we define the concepts that are used throughout this dissertation<br />

and describe the areas we are working in.<br />

We first take a look at VR in general, both on the level of the software<br />

system as well as the ways one can interact with such an environment. We<br />

define the different components of interest and their properties. Furthermore,<br />

we describe how VR and virtual simulation can be shared among different<br />

clients over a network. In the following chapter, we complete this overview<br />

by giving the history of NVE systems and user embodiments. In case the<br />

reader is already familiar with the concepts of VR, VEs, interaction and data<br />

distribution, these two chapters may be skipped.<br />

1.1 VR, VE and NVE<br />

The term Virtual Reality has been utilized in several fields and is hard to define.<br />

Perhaps the reason for this difficulty is exactly caused by the widespread<br />

use of the term. Belleman [Belleman 03] states that the term is used by among

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