International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B5. Istanbul 2004 
  
  
   
  
   
   
   
  
  
  
  
   
   
     
   
  
   
   
  
   
   
  
  
  
   
  
  
  
  
  
  
  
   
   
   
  
   
   
  
  
  
  
  
  
  
  
   
  
   
   
   
   
   
   
  
   
     
3.4 Fusion of two methods 
Through the combined use of photogrammetric and scanning 
data, the geometry of any kind of object can be fully captured. 
Moreover, new products can be available, such as the 
production of '3D orthophotos', which is the orthoprojection of 
photos onto a unified dense DTM of the whole object derived 
from laser scanner data (Ionnidis , 2003). 
Ortohophotos that had been created by photogrammetric 
systems, represent 3D coordinates of an image. Orthophotos 
contain texture information also. The model had been created 
by laser scanning data may not contain texture information of 
object. This problem can be solved by fusion of laser datas and 
single photograph that had been taken by metric camera. 
For fusion of laser scanning data and the rectificated 
photograph of study area has been overlapped and formed at 
coordinate system of local laser scanning data (Figure 8). 
After this process the DEM and the rectified photograph had 
been overlapped and the result product (orthophoto) created 
(Figure 10,1 1.12). 
  
Figure 10. Orthophoto of study object 
  
Figure 8. Reftificated single photograph. 
The last years laser scanning has become a reliable and 
economic technology to build up high class DEM 
(Knabenschuh, 1999). 
The DEM file was created by using point clouds. At the 
beginning the TINs had been created, after the mesh of study 
area had been generated. (Figure 9) 
  
  
Figure 9. Digital Elevation Model. 
  
  
  
  
  
  
  
Figure 12. Overlapping orthophoto and 3D photogrammetrical 
design 
4. CONCLUSIONS 
Nowadays, the usage of laser scanning systems has an 
important role for data acquisition and being realized easily. 
Interactive modelling at laser scanning systems is easier than 
photogrammetric systems. Operator does photogrammetric 
evaluation on the plane at this method. Namely operator can't 
rotate in 3D space. Whereas model could be done by operator in 
3D space. This occurrence is become because of concept 
differences of two methods. 
  
  
   
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