5.17.1.A.i. Georeferencing

Try these first

1. 1.

   What is georeferencing?

   Hint

   Think about how maps help us locate things.

2. 2.

   What do GCPs stand for?

   Hint

   Consider what points are pivotal for measurement.

3. 3.

   What is the purpose of georeferencing?

   • To create new images
   • To align images with real-world coordinates
   • To enhance image color

   Hint

   Consider what aligning images would mean for navigation.

4. 4.

   True or False: GCPs are optional in georeferencing.

   • True
   • False

   Hint

   Think about how maps need certain landmarks to be useful.

5. 5.

   You are tasked with georeferencing an old aerial photograph of a city overlaid with modern GPS coordinates. Describe the steps you would take and the factors affecting accuracy.

   Hint

   Consider how prominent features help in aligning old and new data.

6. 6.

   Discuss the consequences of selecting poor GCPs for the georeferencing process and suggest improvements.

   Hint

   Think about the implications of using unclear reference points.