SATELLITES IMAGES OF VERY HIGH RESOLUTION ON THE STUDY
OF MONUMENTS AND HISTORICAL CENTERS AND THEIR WIDE SURROUNDINGS
Patmios E, Lazaridou M.
(epatmios, lazamari)@civil.auth.gr
Lab. of Photogrammetry — Remote Sensing
Dept. of Civil Engineers
Aristotle University of Thessaloniki
P.O. Box 467, 540 06
Thesaloniki, Greece
Tel/Fax +30310995761
KEY WORDS: Remote Sensing, IKONOS satellite imagery, visual interpretation, monuments, environment.
ABSTRACT
This paper concerns the central area of Thessaloniki city, which includes a large number of significant monuments of different kind,
time, size, ruin etc. Satellite images of very high resolution (IKONOS satellite) are being used for this study. The following subjects
are involved: the wide surroundings of the monuments and historic centers, urban network, land uses, the “neighborhood” of the
monuments, the relation between “old” and “new”.
Our aim is to search through the possibilities of visual interpretation on the study of satellite images of very high resolution in order
to acquire useful information to show off and protect the monuments which are included in a large city, continuously being
developed, as it happens with Thessaloniki city.
1. INTRODUCTION
À multifarious study of monuments and historical centers
(cultural features in general) is particularly important for the
cultural features themselves and also for the development of
their wide surroundings.
Several scientific areas that can contribute to this study are
systematically used.
Photogrammetry, Remote Sensing and Geoinformation Systems
are effective valuable tools for relative qualitative and metric
studies. [Bartolotta M. et al, 2000].
Terrestial takings, aerial photographs and satellite data are
suitably used, according to the case.
Scientific and technologic advances in Photogrammetry and
Remote Sensing are rapid. However, it is very important that
every progress in methods, instrumentation and acquired data
should be tested and evaluated from the point of application
capabilities on the study of monuments and historical centers
[Boehler W., 1999, Patmios E., 2000].
This paper concerns exploration of application capabilities of
IKONOS satellite imagery on the study of monuments
(included in urban areas) with their wide surroundings, as it
happens with the city of Thessaloniki in Northern Greece.
2. STUDY OF MONUMENTS IN THEIR
WIDE SURROUNDINGS
Thesaloniki extends at almost level area along the coast and
continues towards the interiors, where moderate relief appears.
General information (basic topographic data) for the city are
presented in Fig. 1, including contours, main drainage and the
urban area.
The city includes a large number of monuments-cultural
features, especially in its central part. These monuments are of
different kind, time, size, ruin, etc.
Searching through the bibliography, we became familiar with
the monuments. From the study also came out that there are
many kinds of monuments in the central part of Thessaloniki as
prehistoric, byzantine fortress, ottoman monuments, christian
churches, neoclassical buildings etc. [Papagiannopoulos A.,
1983, Patmios E., 1993].
Field check followed, on the base of relevant localization map
sketch Fig. 2, which includes the monuments we focused on.
The used satellite data were hardcopy images of IKONOS
satellite in scales 1: 5,000 and 1:2,500. These are
CARTERRA™ GEO 1-PSM (one-meter Pan-Sharpened
Multispectral), that combines the spatial content of the 1-meter
panchromatic data with the spectral content of the 4-meter
multispectral data [Gerlach F., 2000].
Visual interpretation was done for the smaller scale at first. On a
suitable overlay we recorded data about monuments and their
wide surroundings. Multiple useful information resulted,
concerning: urban network, built-up squares, streets of different
order, sidewalks, rows of trees, inhabited areas, lawns, internal
areas, traffic, particular uses etc.
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