8.9. Digital Photogrammetry

Try these first

1. 1.

   What does DSM stand for?

   Hint

   What does the term surface in DSM imply?

2. 2.

   Name one feature of drones that enhances image acquisition.

   Hint

   Think about their operational capabilities.

3. 3.

   What is a Digital Surface Model (DSM)?

   • A model showing only the bare earth
   • A 3D model including all surface features
   • A method for capturing images

   Hint

   Think about everything that is on the surface.

4. 4.

   True or False: Drones are utilized solely for military purposes in photogrammetry.

   • True
   • False

   Hint

   What other fields have you heard drones being used in?

5. 5.

   Given a set of images captured at varying angles, explain the steps you would take to create a DSM and DTM.

   Hint

   Consider the distinct features you need for each model.

6. 6.

   Critique a photogrammetry project that relies heavily on area-based techniques. What factors would affect its accuracy?

   Hint

   Think about environmental conditions and technical specifications.