13.10.1. Geometric Distortions

Try these first

1. 1.

   What is a geometric distortion?

   Hint

   Think about the shape and position of images.

2. 2.

   Name one cause of geometric distortion.

   Hint

   Consider the factors that affect how we capture data.

3. 3.

   What do geometric distortions affect in remote sensing data?

   • Color accuracy
   • Spatial representation
   • Temporal accuracy

   Hint

   Focus on what spatial representation refers to.

4. 4.

   What is the purpose of orthorectification?

   • True
   • False

   Hint

   Remember how ortho images differ from regular ones.

5. 5.

   Given an aerial image showing severe geometric distortion caused by terrain elevation differences, outline the steps you would take to correct this image.

   Hint

   Consider what tools and data you'd need for effective corrections.

6. 6.

   A satellite image shows buildings offset from their actual positions due to sensor misalignment. Explain how you would register this image to correct the positions.

   Hint

   Focus on techniques that link known positions with captured imagery.