Dirk Stallmann 
  
6 CONCLUSIONS 
Using Kratky’s simple, fast but strict sensor model an accuracy of 11 — 14m in planimetry and 13m in height can be 
achived. Only ca. 10 GCPs are required for the orientation of a stereo pair. The reached accuracy of point determination 
is acceptable for the most applications, e.g.: DTM/DSM generation, ortho image generation, topographic mapping. 
Currently none essential modifications in the new implementation of Kratky's sensor model were made. So far, the 
changes are only related to the coordinate systems, which do not significantly effect the results. Future investigations will 
make use of an extended self-calibration for the modelling of the interior orientation and the use of more than two images 
simultaneously. 
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