5.17.1. Image pre-processing

Try these first

1. 1.

   What is georeferencing?

   Hint

   Think about why we need to align images with real-world locations.

2. 2.

   Name one method of resampling.

   Hint

   Consider methods used to adjust pixels to their new positions.

3. 3.

   What is the purpose of georeferencing?

   • To adjust pixel colors
   • To align images with geographic coordinates
   • To enhance image contrast

   Hint

   Think about how we align maps with the real Earth.

4. 4.

   Is atmospheric correction necessary for accurate data representation? True or False.

   • True
   • False

   Hint

   Reflect on how air conditions can modify light.

5. 5.

   Explain the effects of poor georeferencing on the results of remote sensing analysis. What might be some consequences?

   Hint

   Consider how much organizations depend on correctly interpreted geographic data.

6. 6.

   Discuss the importance of selecting quality Ground Control Points (GCPs) for successful georeferencing. What criteria should one consider?

   Hint

   Think about features that are not likely to change over time.