International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B5. Istanbul 2004
integration. Then final representation is a result of objective
data and detailed interpretation of the object of interest that also
become graphical elements; this knowledge process is set at a
very large scale, 1:20+1:100
Contemporary it is necessary to use a smaller analysis scale to
read and than visualize and comunicate the relations between
case study and the environment where it lies.
The city vector plan, that has been accomplished before the site
map and that has become a main part of it, arise mostly from
large scale acquisition processes applied on monumental
remainigs and diggings. A great deal of a low order of total
station traverses were set to encompass buildings, excavation
areas or other areas of interest, these networks, largely spread
on ancient city territory, have the role to base topographic
detailed surveys on architectural structures and ruins.
If updating of urban maps generally need aerophotogrammetric
flies every 5-10 years, in a archaeological site it is interest-
bearing to perform updating deriving them from large scale
surveys, that are produced in any case.
Stratigraphic survey is the typical operative approach of modern
Archaeology and it requires a continual assistance by
topographic measurements. Since in Hierapolis every working
group manages its own detailed surveys, the chance to
implement a relational database, storing data useful for
searching points on terrain and for using known coordinates,
become clear.
After carrying out large scale surveys, typical topographic
measures and processes, together with accuracy data control
procedures evaluating nominal scale change, enable to achieve
data integration in general map.
MySQL is the DataBaseManagementSystem used to manage
data storage, while data entry web interface is based on PHP
language
For istance, if in a certain city sector a new digging opening is
decided, measurements operators will look points up in
geodatabase graphic interface. If they find any, the server
database connection will allow access to data, regarding precise
location, precision index of points coordinates, etc.. The query
result is a set of alphanumeric and photographic data visualized
in a HTML page. (Fig. 9a)
Another important utility is the chance to select topographic
points with criteria connected with their location which is
obviously a typical ability of GIS. Many points are located on
ancient structures, and a considerable number of them are
located in buildings corners. The first topographic points feature
is selectable through a typical selection by location while the
second one is an esplicit attribute that data entry mask interface
require to fill. (Fig. 9 b-c)
This selection of selection raise to a remarkable role: if the
registration of aerial or satellite images is needed, selected
points can be used as high precision ground control points, to be
managed in warping tecniques.
4. PERSPECTIVES
One of the most important perspective of developement is the
systematics organization of data concerning each building and
excavation area. The implementation of spatial datasets
characterized by a larger nominal scale in comparison with the
datasets which costitute the 1:1000 map, is easily reliable such
as the forced visualization among a fixed range scale.
Figure 9. (a) Main topographic points query. (b) Data entry
mask, with building corner attribute highlighed. (c)
Topographic points over buildings spatial query.
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