Incorporating a Virtual Presenter in a Resource Adaptive Navigational Help System
Autor: Jörg Baus and Andreas Butz and Antonio Krüger
Herausgeber:
We discuss a virtual presenter in the form of a 3D avatar whose task
it is to show users their way through a (3D model of a) public
building. Our thesis is that when looking for way descriptions, seeing
such a walkthrough guided by a virtual scout is easier to remember
than a purely textual description or the kind of annotated floor plans
used widely in today's public buildings. Furthermore, we discuss some
technical aspects of how such a scout can be constructed and what
underlying data and processes are needed for the automated generation
of guided route descriptions. One of our main goals is to give the
avatar the ability to react to the spatial environment in an
appropriate manner, e.g., by pointing to relevant objects and
following a path that can be easily memorized by the viewer. We
introduce the concept of bounds objects useful for the computation of
spatial relations and behavior activation of the virtual
presenter. The final presentation is then performed by the virtual
presenter moving along a path scouting the surroundings. The presenter
is made sensitive to the objects in the environment, thus getting only
the relevant information depending on its task and position. It will
perform the task alone without system intervention, by querying the
environment using the bounds concept to trigger behaviors and to
establish an egocentric frame of reference.
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