8.7.1. Types of Ground Control

Try these first

1. 1.

   What is the purpose of ground control points in photogrammetry?

   Hint

   Think about their role in spatial accuracy.

2. 2.

   Name the two types of ground control.

   Hint

   Consider the dimensions that they address.

3. 3.

   What are Ground Control Points (GCPs)?

   • Points on the map
   • Reference points on the ground
   • Randomly chosen points

   Hint

   Think about their role in accuracy.

4. 4.

   True or False: Vertical control is only necessary for horizontal mapping.

   • True
   • False

   Hint

   Consider the different aspects of mapping.

5. 5.

   Reflect on a real-world construction project. If the GCPs were incorrectly placed, what would be the potential ramifications on the project?

   Hint

   Think about safety and regulatory implications.

6. 6.

   Create a hypothetical scenario where only horizontal control is established. Discuss how this would impact vertical measurements in a project.

   Hint

   Reflect on the interconnectedness of horizontal and vertical measures.