Information Technology Reference
In-Depth Information
3.4
Mechanisms of
WebIB
for Multiple Users
As shown in the left figure of Figure 4,
WebIB
can provide multiple users with a web-
based collaborative virtual environment based on the same mechanism of Figure 3.
WebIB
has a System ID No. (SID No.), and by specifying it, each client user can
access its corresponding
WebIB
that has the same SID No. through his/her web-
browser. Using this data-linkage, communications between a teacher and a learner
become possible in the cases of educational 3D contents. The right figure of Figure 4
shows another case that each of multiple users individually uses his/her own
WebIB
.
As shown in the figure, each of multiple
WebIB
s can run on the same web server, and
using different System ID No.(SID No.), each user can access his/her own
WebIB
through his/her web-browser.
Fig. 4.
Data-linkage among one
WebIB
and its two clients (Left), and data-linkage among two
individual
WebIBs
and two dedicated clients (Right)
4
Web Contents Realized Using
WebIB
This section presents actual examples of interactive web contents realized using
We-
bIB
. In this paper, we especially introduce educational contents because they are re-
garded to be practical contents. We also introduce information visualization contents
related to our one project about cyber physical systems.
4.1
Educational Contents
As visual contents for educations, there are two types of contents, i.e., 3D contents
and 2D contents.
WebIB
is used as a 3D model viewer for 3D contents and as an im-
age viewer for 2D contents. In the following, we introduce these examples.
1) 3D Model Viewer
The left figure of Figure 5 shows an example 3D model for students to learn a brain
and its some parts represented as web 3D contents using
WebIB
on IE browser. A
student can operate interactively for the change of his/her viewpoint, i.e., rotation,
zoom and pan, and can point out any parts by a mouse device click to display their
part names of the brain. As described in the previous section, using the same SID No.,
these operations are shared among other users. If one user is a teacher and other users
are students, the all students can see the teacher's operations and they can understand
