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New perspectives to save cultural heritage
Altan, M. Orhan

CIPA 2003 XIX th International Symposium, 30 September - 04 October, 2003, Antalya, Turkey
operator after generation of stereo models. MicroStation
(Bentley) software was used for 3D vector plotting of Fatih
Mosque facades as CAD software. These works were done for
the Fatih Mosque documentation project and also used for this
study. For each facade, differentially rectified images are
generated and registered to ground coordinate system. (Figure
Figure 1. Differentially rectified image
The 3D model of Fatih Mosque and surroundings was generated
in two steps. First the 3D model of the Fatih Mosque was
generated, from 2.5D photogrammetric map and 3D digital
vector plotting of Fatih Mosque. Then the 3D model of
surrounding was generated from 2.5D photogrammetric maps.
Digital terrain model (DTM) of the surrounding was generated
by using the 2.5D form photogrammetric map points, which is
belonging to the ground as lattice. (Figure 2).
Figure 2. DTM of the Fatih Mosque surrounding
Then, the buildings on the photogrammetric map were extruded
down to the DTM to give solid shape. Finally 3D model of the
area was completed with true coordinates and scales (Figure 3).
It means, it is possible to measure any object in 3D model
(Emem 0., 2002).
After generation of 3D model, next step was 3D model
generation and visualization. The texture information of 3D
model surface patches is taken from photographs. In this study,
differentially rectified images and registered images were used
for texture information. 3D model generation and visualization
of Fatih Mosque, surface patches of 3D model are rendered
with differentially rectified image of facades. The roof of the
Fatih Mosque was rendered with different colours. Other
buildings were also rendered with colours. The ortho image of
Fatih Mosque and surrounding was also available and was used
for visualization of 3D model. The ortho image was draped on
DTM to visualize Fatih Mosque surrounding. MicroStation .1
CAD program were used for rendering. As a results,
geometrically stable, accurate 3D model of Fatih Mosque and
surrounding were generated (Figure 4,5,6,7,8)
Figure 4. Southwest side of Fatih Mosque 3D model
Figure 5. Northeast side of Fatih Mosque 3D model