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VISUALISATION OF A NECROPOLIS ON THE BASIS OF A PORTABLE AERIAL
PHOTOGRAMMETRIC SYSTEM AND TERRESTRIAL LASER SCANNING
R. Brechtken 3 , H.-J. Przybilla 3 , D. Wahl 3
a Bochum University of Applied Sciences, Department of Surveying and Geomatics -
rainer.brechtken@hs-bochum.de
Commission V, WG V/4
KEY WORDS : Application, Archaeology, Cultural heritage, Fusion, Photogrammetry, Terrestrial, Three-dimensional, TLS,
Navigation
ABSTRACT:
This paper describes data collection for three dimensional visualisation based on measurements of terrestrial laser scanners in
combination with digital aerial photogrammetric data. For these methods an archaeological excavation area in Egypt is chosen. The
whole process, with special focus on the different measuring methods and the data fusion, will be described. 3D visualisations of
various objects are demonstrated.
1. THE ARCHAOLOGICAL EXCAVATION
„ATHRIBIS“
The ancient city of Athribis is located 140 km northwest of
Luxor and 400 km south of Cairo on the east side of the river
Nile. One of the most significant historical buildings in this area
is the temple of the lioness queen REPIT. This temple was build
between 80 and 50 BC.
Figure 1. Athribis, Egypt. (© GoogleEarth Copyright 2007)
The archaeological excavation site of the Athribis temple is an
example of a research project with international partners. Since
2003 the entire surveying work in Athribis is achieved by
Bochum University of Applied Sciences, Dep. of Surveying and
Geomatics. Besides classical geodetic surveys (for setting up
the geodetic net) more and more 3-D technologies, like
terrestrial laser scanning and digital photogrammetry, are used
for the documentation process.
In addition to the temple complex a neighbouring mountain site
(more then two kilometres long and about 200 m high (figure
18)) is part of the research project. It is the place of the
necropolis and generates increasing interest. In the 2007
campaign a documentation concept was planned which consists
of long range terrestrial laser scanning on the one hand and low
altitude aerial photogrammetry on the other hand.
2. MEASUREMENT METHODS
2.1 Terrestrial Laser Scanning
During the last campaigns a complete survey of the area in the
vicinity of the Repit temple was carried out by means of the
medium range scanner Z+F Imager 5003 and 5006 (Obertreiber
& Stein, 2005, figure 2). The typical data amount of such a
campaign: 37 Scans /1.8 Billion Points / 9.3 GByte.
Figure 2. Athribis, Repit Temple pointcloud
After the completion of the geodetic survey in the vicinity of
the temple, the archaeologists asked for a method to extend the
survey to the surrounding terrain. Because of local restrictions