18.6.2. Orthophoto Generation

Try these first

1. 1.

   What is an orthophoto?

   Hint

   Remember the key term 'geo-rectified'.

2. 2.

   Why do we use Ground Control Points?

   Hint

   Think about 'accuracy' in measurements.

3. 3.

   What is an orthophoto?

   • A distorted image
   • A geo-rectified image
   • A regular photograph

   Hint

   Focus on the term 'geo-rectified'.

4. 4.

   True or False: Orthophotos can be used for accurate measurements.

   • True
   • False

   Hint

   Think about the purpose of orthophotos.

5. 5.

   Create a plan for using orthophotos in an urban planning project. Consider the steps you would take from image acquisition to final analysis.

   Hint

   Think about what you need to communicate with when using these images.

6. 6.

   Describe how you would ensure accuracy in an orthophoto created for environmental monitoring of a coast.

   Hint

   Consider factors that could affect the data collected.