Fig. $1$

Fig. $2$

Fig. $3$

$7)$ Explain the procedure for mean and median filtering with a $\backslash (3\backslash$times $3\backslash )$ sized kernel. Assuming that the noise is additive, is independent of the image and has zero mean. Compute the outputs of the $\backslash (3\backslash$times $3\backslash )$ mean and median filters for the noisy image with the pixel values shown in Fig. $2.$ Show all steps in the computation.

$[10][$CO$02][$BTL $2]$