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Figure 1. Index map of aerial photographs
212.2 Aerial Photographs: Aerial Photographs of the 1950s
are also important base images of the system. Checking the
geo-references of these old aerial photographs is also time-
consuming, as they do not include accurate geo-reference
information. A sequential indexing number and visual
information such as the texture of land surface, roads, and
streams are keys to identify the location.
As of April 2004, about 1,060 aerial photographs of the 1950s
are incorporated into the system based on the geo-references, as
shown in Figure 1. Though the total coverage is roughly one-
third of the region, this includes almost all of the academically
important areas.
EI Description index
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Figure 2. Index map of site descriptions
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Figure 3. Sample images from scenic photographs
2.2.3 Academic Descriptions: Academic descriptions are
mostly from the lifetime research results of Srisakra, and are the
most important contents of the system.
As of April 2004, about 1,000 sites with his descriptions are
ready for browsing, as shown in Figure 2. Each description is
associated with a point geo-reference.
2.2.4 Scenic Photographs: Scenic photographs are another
important type of material and a very personal record. Only the
photographer himself can clearly remember the scene and
describe the information in it. Furthermore, some of Srisakra's
photographs are unique records of relics, some of which have
since been stolen or severely damaged.
As of April 2004, about 3,000 frames have been scanned
digitally without any information which may identify the geo-
references. Figure 3 shows sample images. Integration of them
is still in progress.
2.3 Outline of the Current System
An important goal of the project is to allow public access to the
information system through the Internet. A rough diagram of
the current system is shown in Figure 4. Major contents, Le.,
site descriptions and image files, are linked together by geo-
e * * *
Pl Simple User Authentication 1
EcoNETVIS Web Page
Indexes of
Site Descriptions
j [ j Topographic Maps
: : Aerial Photographs
Texts:
Site Descriptions
Topographic Maps
| Aerial Photographs
EcoNETVIS Web Server
Figure 4. Diagram of the current EcoNETVIS
