Question

What is the primary purpose of fiducial marks on an aerial photograph?

• A. To calculate urban land use
• B. To calculate atmospheric conditions during capture
• C. To establish a reference coordinate system on the photograph
• D. To measure valleys on the ground directly

Hint:

Remember: \[ \boxed{ \text{Fiducial Marks} \rightarrow \text{Reference coordinate system + Principal point} } \]

Answer 1

The Correct Option is C