4.8.29. Control points

Try these first

1. 1.

   What is a control point in photogrammetry?

   Hint

   Think about its role in positioning on a map.

2. 2.

   What technology is often employed to determine the coordinates of control points?

   Hint

   What satellite-based system helps in positioning?

3. 3.

   What is the role of control points in photogrammetry?

   • To enhance the clarity of images
   • To provide reference locations for accuracy
   • To reduce flying height
   • To create 3D models directly

   Hint

   Think about their position in mapping.

4. 4.

   True or False: Control points can only be used in aerial photogrammetry.

   • True
   • False

   Hint

   Recall the versatility of control points.

5. 5.

   Create a scenario where the lack of accurate control points leads to significant errors in a city planning project.

   Hint

   Consider what might happen without accurate measurements.

6. 6.

   Design a method using GNSS technology for establishing control points in a remote area.

   Hint

   Think about how to measure accurately across distances.