$(20$ points total$)$

$\backslash$table$[[1,7,3,3,6,0],[3,5,0,5,6,0],[3,5,0,0,7,0],[4,2,4,5,7,7],[1,2,3,6,7,7],[1,3,3,6,7,7]]$

a$.$ Consider the $66$ image with $3$ bits per pixels given above. Draw the histogram for the image.

b$.$ Apply a $3$ by $3$ median filter to the above image. Put the values only for the internal pixels.