The International Archives oj the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B4. Beijing 2008
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standards for services and protocols (such as those
proposed by ISO/TC211 and OGC).
Most of these systems and tools are already available under the
Project URL: http://averof.dynalias.net (Figure 2). Notice that
some of them require authorized access, due to restrictions
(copyrights) posed by the Hellenic Navy. The following
Subsections describe in more details the project outcomes,
which are currently available or under development.
Figure 2. The initial web page of the Project (part of)- Available
at http://averof.dynalias.net (currently in Greek).
photograph gallery has been generated (Figure 3). The software
package used for the implementation of the gallery is the Adobe
Photoshop Elements.
Figure 3. A snapshot from the web photograph gallery.
The gallery has followed the organization of the photographs as
in the Museum Archives; and serves the photographs on the
web in a slide show form, where the photograph captions are
also visible. We plan to enrich the shows with sound (music
and/or talks) in the near future.
4.1 The Historical Photographs Database
As mentioned already the Museum Archives accommodate a
rich and rare collection of historical photographs (about 1000
in number) from the first half of the 20 th century. Those
photographs are in analogue form and their majority is in
unique copies. Most of the photographs either have been taken
on the ship or they depict the battleship at historical events.
Under this Project we have scanned all these photographs in
high resolution (>600 dpi; grey scale) and stored them in digital
files (jpeg format; low compression). Most of the photographs
have been assigned appropriate captions provided by the
Museum personnel and some have already been associated
spatially and temporally. Our intention is to further analyze
these photographs and enrich the collection with related content
available in other Archives (e.g., the Hellenic Naval Museum,
the History Museum).
An image database has been developed to store the metadata
associated to the photographs. The PostgreSQL/PostGIS open
source software package has been adopted for the
implementation; provided that apart from the alphanumerical
metadata (caption, theme, keywords, etc.), the photographs
have spatio-temporal descriptions, i.e., the location and the date
the photo has been taken.
PostgreSQL/PostGIS may efficiently support the retrieval ot
the photographs based on thematic and/or spatio-temporal
predicates. Additionally, it may readily be connected to a
desktop GIS or a Map Viewer in order to visualize the spatio-
temporal distribution of the photographs on top of digital maps
or geographic mashups (see Section 4.4).
A pilot slide show of about ten (10) photographs accompanied
with the corresponding captions and musical sound has been
produced in video format. The video has been generated in
Adobe Photoshop Elements, it lasts for 1.5 minutes and presents
a series of historical photographs from the launching of the
battleship (Figure 4).
We plan to generate similar videos and multimedia
presentations for various themes related to the history of the
battleship (e.g., the naval battles of Elli and Limnos).
Figure 4. A snapshot from the slide show (video) of the
battleship launching (March 12 th , 1910).
4.2 The Web Photograph Gallery
In order to make the photographs available on the web and
mainly support the browsing on the Archives Albums, a web
4.3 The Spatio-Temporal Database of the Ship History
Based on the records of the battleship diaries, we are currently
developing a spatio-temporal database. This database will also