Performing the median filter resulted in a mean brightness
value 92.40 with a standard deviation 53.62. The study also found
that the processing of both average and median filters resulted in
the same mean and median values. This shows both filters have the
same effect in removing speckles from the image and making the
land and sea area clearer. To filter pixels located near the edges of
the image, edge pixel values using the median filter are replicated
to produce sufficient data. This method smooth the appearance
of the image.