a) What does orthorectification do? (4) b) What is a ground control...
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a) What does orthorectification do? (4)
b) What is a ground control point (GCP)? (2)
c) What is the function of a stereo GCP? (2)
d) List two sources of GCPs (i.e. what can be used to collect the XYZ coordinates of GCPs) (2)
e) Under which circumstances can orthorectification be done without GCPs? (2)
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