Game Development Reference
In-Depth Information
reconstruction of the human body and animation using image sequence process-
ing and graphical modeling. In most cases, reported reconstruction accuracy is
being pursued to map the analysis of the real person with the virtual human
(humanoid) in terms of anthropometrical characteristics. The latter applications
include:
a)
The reconstruction of the music teacher training when he/she demonstrates
typical playing methodologies for various musical instruments.
b)
The use of human body motion estimation and tracking techniques in the
post-production industry incorporating immersive techniques.
c)
The use of human body augmentation for the development of virtual mirrors
for novel e-commerce applications.
d)
The use of 3D humanoids in training ergonomics.
Finally, conclusions are drawn in the final section.
Standards
The main tool introduced for the description of 3D “worlds” is the Virtual Reality
Modeling Language (VRML). Technically speaking, VRML is neither virtual
reality, nor a modeling language. Virtual reality typically implies an immersive 3D
experience (such as the one provided by a head-mounted display) and various 3D
input devices (such as digital gloves). VRML neither requires, nor preludes
immersion. Furthermore, a true modeling language would contain much richer
geometric modeling primitives and mechanisms. VRML provides a bare mini-
mum of geometric modeling features and contains numerous features far beyond
the scope of a modeling language (Carrey & Bell, 1997). VRML was designed
to create a more “friendly” environment for the World Wide Web. It provides the
technology that integrates three dimensions, two dimensions, text and multimedia
into a coherent model. When these media types are combined with scripting
languages and Internet capabilities, an entirely new genre of interactive applica-
tions becomes possible (Carrey & Bell, 1997).
X3D (X3D Task Group) is the next-generation open standard for 3D on the web.
It is the result of several years of development by the Web 3D Consortium's X3D
Task Group and the recently-formed Browser Working group. The needs that
the standard meets are:
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