This could be started with a single key stroke. Conditional statements or status checks
could be added so that the narrator could interrupt the script during the talk. The panning
can be set to end at an exact or relative location and can be precisely timed to allow for
a given chunk of narration. For example, step three above could also be set to start 300
seconds from when it is stopped or 300 seconds after step two ends. A “cancel” option to
terminate the script might also be helpful.
A script like this is relatively easy to program once the software has become familiar.
It may take patience and dedication to master use of timeline, scripting, and adding
tracks. However, these authoring applications are very powerful and may be worth the
investment.^1
8.7. ap p l y i nG p a n o r aM a S
Panoramic images can be used to add detail to 3D, VR, and CAD environments. It
is possible to apply photographs to the surface of polygonal wire-frames as a sort of
texture, lending realism to a 3D model that a synthetic texture created artificially by
computer cannot. A model’s geometry may have varying levels of detail, ranging from
simple geometric shapes to complex polygons of minute detail. Laser and multi-spectral
scanners can help capture a high level of spatial detail. Applications such as 3D Studio
Max and Rhino can “bake” photo-realistic textures onto object surfaces to create models
that virtually represent a site to a remarkable extent. The inclusion of additional media
(section 5), such as audio recorded on-site, can greatly enhance the immersive qualities
of a virtual model.
Specialized viewing software may be needed to view 3D virtual reality models.
Additionally, the large amounts of data these models generate require a highly capable
computer system.
Photogrammetry is a technique that uses images of a single object from various viewpoints
to create a 3D environment. Software such as RealVIZ’s ImageModeler and VTour identify
like-objects in several images. These can then be extruded into polygonal forms to create
a wire form that give depth to a scene, adding a third dimension to what was previously
a set of 2D images.
These techniques can help create a highly immersive virtual experience of an existing
site. They are also helpful in creating a representation of a site undergoing restoration
or reconstruction and for combining photo-realism with computer-created structure and
forms.
- Anyone working with LiveStage Pro should also have Matthew Peterson’s Interactive
QuickTime: Authoring Wired Media (Morgan Kaufmann Publishers, 2004) close to hand.