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