Cöltekin, Arzu 
  
3. CONVERTING AND EDITING THE VRML MODEL 
This model is converted to a VRML model by using an automatic converter called CrossRoads. (This software is a 
freeware that can be found in WWW.) But the automatic converter changed the original coordinates using a self-defined 
origin, and this was not wanted. So all the coordinates are edited as point clouds as they were in nff files and only the 
headings are kept from the automatic conversion results. 
Also some lightning effects, transparency, colors, anchor, camera positions, texture, links from the model (anchor 
points) and some other details are coded in VRML file manually. 
  
Figure 3. This camera position shows a little bit of bird’s view. Attention to the lightening effect in lower left corner on 
one of the windows in the left (green) room. 
      
Figure 4. Photo-Realism: Sample textures are added on some objects on the model. 
Texture mapping using real images in this context has yet many problems regarding view of angle, lights etc. although 
one can orient the images relative to the geometrically correct model (Cóltekin et al, 1999). VRML Is being an 
interpreted language (not compiled) it is relatively slow in performance, plus the shortcomings in the bandwidth would 
  
146 International Archives of Photogrammetry and Remote Sensing. Vol. XXXIII, Part B5. Amsterdam 2000. 
  
  
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