International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B5. Istanbul 2004 
  
  
Profile 9 
1982 
2003 
  
  
  
  
Figure 1. Distortions shown in profile 9 
The following figure 2 shows one of the digital images with the 
location of the right part of profile 9. Between the roof of the 
museum hall and the cog several construction elements made of 
steel can be detected which allow the wood manufacturer to fix 
the cog in the desired location of the room. Some of these 
diagonals have been forced too much. Therefore the ship moved 
to the rotated location shown in figure 1. 
  
Figure 2. Surface with marked profile 9 
The deformations of the cog are caused by several effects. 
Some local distortions are affected by the different expansion of 
wooden construction elements. Between horizontal plancs and 
surface parts differences up to 20 cm could be detected. The 
main distortion of the whole ship was produced after the wood 
archeologists tried to repair local distortions with additional 
steel constructions inside the cog. The whole ship moved with 
its lower part to one side and rotated in one direction. 
This effect can been seen in an oblique visualisation of the cog 
from the front side to the back in figure 3. 
  
10 
  
  
  
Figure 3. Comparison of profiles 
3.3 Surfaces 
For visualisation purposes the photo textures of some digital 
images were used to show the surface of the cog on top of the 
measured object point cloud. For the resampling of different 
locations 46 color images of the Nikon D100 were used. Apart 
of the left side of the cog was processed as a textured model. 
The three dimensional view could be examined with the 3D- 
Viewer of PhotoModeler or with a plug-in for an Internet 
browser if it was exported in VRML-Format. 
An impression of the cog with some of the textured areas is 
shown in figure 4. The same textures were used for the 
processing of ortho images of the left side of the cog. 
  
Figure 4. textured surface 
3.4 Quality Control Information 
To enable a quality control of the triangulated point cloud, 
several distances in the survey volume have been signalised and 
     
  
  
  
  
  
  
   
   
  
  
   
    
   
  
   
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   
   
  
  
  
  
  
   
  
     
  
  
  
  
   
   
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