Applying Dilation and Erosion to the Original Image

Lenna = imread('lenna2.jpg');

SE3 = strel('square',3);

SE5 = strel('square',5);                                   

SE7 = strel('square',7);

ErodeLenna = imerode(Lenna,SE3);

subplot(2,3,1); imshow(ErodeLenna);  ylabel('Eroded Image'); title('5x5');

ErodeLenna = imerode(Lenna,SE5);

subplot(2,3,2); imshow(ErodeLenna); title('5x5');

ErodeLenna = imerode(Lenna,SE7);

subplot(2,3,3); imshow(ErodeLenna); title('7x7');