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 
1) 
Figure 1. Differentially rectified image 
4. 3D MODELLING OF OBJECT AND SURROUNDING 
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). 
5. VISUALIZATION OF 3D MODEL (RENDERING) 
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