4.13. Tilted Photographs

Try these first

1. 1.

   What is a tilted photograph?

   Hint

   Think of how the camera is positioned.

2. 2.

   Where is the nadir point located in a photograph?

   Hint

   It's a key reference point.

3. 3.

   What is the angle threshold defining a tilted photograph?

   • 25 degrees
   • 30 degrees
   • 35 degrees

   Hint

   Recall the specific angle mentioned in class.

4. 4.

   Tilt displacement is measured from which point?

   • True
   • False

   Hint

   Think about the reference point for displacement.

5. 5.

   A photo is taken with a tilt angle of 12 degrees, flying height of 750m, and the focal length is 35mm. Calculate the scale of a point whose elevation is 150m if its y-coordinate relative to nadir is 200 units.

   Hint

   Make sure to convert degrees to radians for calculations.

6. 6.

   Discuss how varying flying heights affect measurements in tilted photographs, providing an example with numerical details.

   Hint

   Contrast between low and high flights, think about image clarity.