5.17.2. Image enhancement

Try these first

1. 1.

   What is the purpose of image enhancement?

   Hint

   Think about why we want clearer images.

2. 2.

   Define 'image histogram'.

   Hint

   What does it show us about an image?

3. 3.

   What does image enhancement primarily aim to do?

   • Add new information
   • Improve visual quality
   • None of the above

   Hint

   Think about why we edit images.

4. 4.

   True or False: A histogram can help determine whether an image needs enhancement.

   • True
   • False

   Hint

   Consider what you observe when looking at a histogram.

5. 5.

   Given a histogram with two peaks, what does this suggest about the image features? How would you enhance it?

   Hint

   Identify the prevalent classes and understand how to stretch their distributions.

6. 6.

   Explain the significance of NDVI values ranging from -1 to 1. How would you apply NDVI in practical monitoring?

   Hint

   Think about what different values represent in real-world settings.