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Title
New perspectives to save cultural heritage
Author
Altan, M. Orhan

CIPA 2003 XIX th International Symposium, 30 September - 04 October, 2003, Antalya, Turkey
Low-size urban projects: when the project scale is a housing
block or a small part of a district. It is recurrent to have to refer
to surrounding building shapes to maintain the analysis on the
project insertion. Photogrammetry may make it possible to
provide interesting information for the development of the
project, but only if the project scale is not too large.
6. EXAMPLES OF ARCHITECTURAL PROJECTS
USING THE PHOTOGRAMMETRIC TOOL
To test the validity of our approach we carried out two
architectural interventions of different kinds. During the visits,
we had a digital camera (Minolta Dimage F100, 4 Mpixels) and
the PhotoModeler Pro 4 software (EOS System) for data
processing.
The first example is a preliminary work with an industrial
building rehabilitation. The old malt house of Ingwiller (fig.3),
a 2000 inhabitants’ town in north Alsace (France). This
building was built at the beginning of the 20th century and was
modified several times. It has not any more been in activity
since 1986, when the malt production was transferred to another
site. In order to give a new life to this building, it was decided to
make the survey of it, followed by a test of the transformation
feasibility for such a building group.
Figure 3. Ingwiller old malt house
The second example is a common reflexion at an urban scale.
The site of Jeanne d'Arc barracks (fig.4) is situated in the
periphery of Reims (France). Reims was a garrison town at the
time of the German empire occupation of Alsace-Lorraine. It
was thus surrounded by barracks at the beginning of this period
(1870-1914). The Jeanne d'Arc barracks is a hint of this time.
Strategic interest of Reims barracks disappeared and those will
be destroyed.
The two operations have different natures. This enables us to
study several possible and various uses of architectural
photogrammetry as a tool. One allows to test the possibility to
measure with the virtual model of existing (malt house) and the
other to use the 3D model and the textured model.
Figure 4. The barracks, aerial picture, current built context.
6.1. The survey
As regards to the malt house, the survey and its representation
constitute the major part of the work, it was carried out in a
traditional manner (distancemeter). It was long and hard and
sometimes some distances were impossible to measure. That is
why an additional outer photogrammetric survey appeared
interesting to us. It allowed us not only to measure the elements
which were only visible from outside, but also several inner
dimensions, thanks to the trace of slabs in facade for example
(fig-5).
Figure 5. Malt house virtual model. The trace of slabs in the
facade and some windows facing the street can be seen
(PhotoModeler software).
With regard to the project in Reims, the photogrammetric
survey was carried out simultaneously with the site visit by the
design team. The ground being large (approximately 8
hectares), it was necessary to define an area for the survey. The
site was the center of our interest. It was decided to survey only
the buildings that could be seen from the barracks ground. The
model for this project was to be directed towards a virtual 3D
model. Only the existing limits on streets of the site were
modelled. Thus the project could be inserted in a virtual built
context.
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