Game Development Reference
In-Depth Information
dimensions of the product are 2.2m
1.6m, which are relatively small for this
type of device.
A special and original case of immersive desk is the ImmersaDome System by
Elumens (see figure 11.9). The image is projected on a spherical surface in front of
the user so that it can cover a large part of his field of vision. The physical visual
immersion is thus better. The negative point of this system is that the video projector,
having an adjusted wide angle lens, is placed in front of the observer, between him
and the spherical dome. The image deformation is taken into account by a hardware
component which is a special lens, but still needs to be recalculated using a software,
which causes a delay in displaying the images. Projection by DLP video projector of
1050 pixels is done on a spherical dome with a diameter of about 2 meters.
Elumens also offers multiple options of larger dimensions, reaching up to 5.6 m in
diameter. In this type of device, the user is neither in an immersive room nor on an
immersive desk.
× Human scale visual interfaces: visioroom (immersive room) and visiocube
Choice between the “ready-to-see'' and the “custom-made'' devices
In this part, we will discuss visual interfaces that are often made up of multiple video
projectors and one or more sufficiently large, human-scale screens, for immersion in
a large field of vision of one or more observers. These devices are generally used for
life-size projection of the virtual scene. Several video projectors are used in order to
increase the resolution of the complete image and cover a large field of vision. It will
be interesting to note that all the currently available immersive rooms still have a long
way to go to reach the level of human acuity, which is about 1' of angle. Thus to
get a field of vision of 180 , we will require an image of more than 10000 pixels
Figure 11.9 Visionstation by Elumens. (Illustration: Immersion SAS, with permission)
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