Matlab code:- Dilation and erosion example:-

%input image given below in code save it as "finger.tif"

original=imread('finger.tif');

figure(1);

subplot(2,3,1);

imshow(original);

title('Original image');

%SE element B

se=strel('square',3);

%A erode B

A=imerode(original,se);

subplot(2,3,2);

imshow(A);

title('image after erode original with se');

%dilate with (A-B) and then B

A1=imdilate(A,se);

subplot(2,3,3);

imshow(A1);

title('result of (A-B)+B');

% Above result again dialed

A2=imdilate(A1,se);

subplot(2,3,4);

imshow(A2);

title('above image dilated again to fill gaps');

%Eroded with B

final=imerode(A2,se);

subplot(2,3,5);

imshow(final);

title('Final proceed image');

Input:- image :-

finger.tif

OUUPUT:-