The
basic idea is to immerse a user inside an imaginary, computer-generated
"virtual world." Although many different technologies can be used to achieve
this effect, they all share a common result: the user is cut off from any
view of the real world outside.
Much less attention has been paid to the field of Augmented Reality, although
its potential is at least as great as that of Virtual Environments. In
Augmented Reality, the user
can see the real world around him, with computer graphics superimposed or
composited with the real world. Instead of replacing the real world, we
supplement it. Ideally, it would seem to the user that
the real and virtual objects coexisted.