4. Photogrammetry Surveying

Try these first

1. 1.

   What is photogrammetry?

   Hint

   Think about what we can extract from images.

2. 2.

   Define vertical photographs.

   Hint

   Consider the angle of the camera.

3. 3.

   What type of photographs are typically used in photogrammetry?

   • Aerial
   • Terrestrial
   • Both

   Hint

   Think about the angles and locations from which photos can be taken.

4. 4.

   True or False: Relief displacement affects only vertical photographs.

   • True
   • False

   Hint

   Consider what types of photographs experience distortion.

5. 5.

   You have a photograph taken at a height of 200 meters with a camera focal length of 48 mm. Calculate the scale.

   Hint

   Ensure to convert units appropriately when calculating.

6. 6.

   Explain how relief displacement might affect height determination in an area with hilly terrain.

   Hint

   Think about how height changes influence visual measurements.