International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B1. Istanbul 2004 Inter 
  
  
2.4 
Figure 4. the GCPs distribution in the digital maps 
In th 
rigor 
As it is shown in figures 2 to 4, the digital maps do not cover 2- In TPs selection, the software has the ability to done 
the whole imagery area and they cover about 60%-75% of the extract them automatically with image matching solvi 
whole images. In GCP and TP selection, two factors were techniques. Thirteen tie points automatically were 
considered: extracted. In Figure 5 and Figure 6, the distribution of The 
l- In GCPs selection, it was tried to distribute them in tie points is shown. Verse 
the entire image. As a result, this kind of coverage calci 
makes the error to be distributed in the entire image on tl 
homogenously and doesn't let extrapolation happen PCI 
in the image. are: 
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Figure 5. Automatic extracted tie points 
Tie