PROGRAM :-
I = imread('circles.png');
se = strel('square',7);
I_opened = imopen(I,se);
I_closed=imclose(I,se);
subplot(2,2,1)
imshow(I),title('Original')
subplot(2,2,2)
imshow(I_opened,[]),title('Opened')
subplot(2,2,3)
imshow(I_closed,[]),title('Closed')
OUTPUT :-
