B. Additional Information to Digital Contents
Additional information of digital contents is managed in
the database. The additional information treated in this
research is classified into "Position Information" and
"Filtering Information". Position Information indicates
longitude and latitude in geographical coordinate. Position
information is added to digital contents by the user's
designating longitude and latitude. Specifically, when the
user uploads a file using this web application, Google Maps
[5] is used. The user is to select an optional position on
Google Maps, and "Position" is related to "Contents".
Hereby, position information is added to digital contents.
C. Web Application for AR Digital Contents Provider
Digital contents are create on the various platforms.
Therefore, we built web application corresponding to multiplatform
as application for digital contents provider. This
web application runs on all browsers which correspond to
HTML4. Application screen and each composition item are
shown in Figure 3. The filtering attribute is the addition
attribute to identify the target user of contents. This attribute
is classified into three kinds. Each attribute is shown in
TABLE 1.