For the photogrammetric processing steps the default parameter
settings for aerial imagery had to be adapted partly to the UAV
flight conditions. At the beginning of the evaluations (Ziegler,
2011) for none of the three test areas GCP ground data was
available. The results are purely based on the GPS information
from the plane and the aerial triangulation. No manual tie point
measurements or editing has been performed on the results in
sections 4.1 and 4.2.