3) (4 points) Consider the following 5x5 image patch with the given pixel values in the range [0.255]: 1 2 3 4 5 90 90 90 90 90 90 255 90 90 90 90 90 90 210 210 210 210 210 210 210 210 210 0 210 210 1 2 3 4 5 (a) Which pixels are corrupted by salt-and-pepper noise? How did you decide? (Write down the corruppted pixel locations and the reason of your decision.) (b) How can we deal with the corrupted pixels in the above image patch? Modify (correct) the values of the corrupted pixels using an appropriate filter