3. Preprocessing

Noise Reduction — Quiz

Test your understanding of noise reduction with 5 practice questions.

Practice Questions

Question 1

Which of the following noise reduction techniques is most effective for removing random bright or dark pixels from an image?

Question 2

What is the primary characteristic of speckle noise in Synthetic Aperture Radar (SAR) images?

Question 3

Which type of filter adjusts its characteristics based on the local image content, making it effective for noise reduction while preserving edges?

Question 4

When applying a $3 \times 3$ mean filter to a pixel, what is the new value of the central pixel if the neighborhood values are: $$10, 12, 15, 11, 13, 16, 14, 10, 12$$

Question 5

Which of the following is a common approach to reduce striping noise in remote sensing imagery?