this is what the code is

Result which I getting is full black Code is as follows

    I =imread('image.bitmap');
    G=rgb2gray(I);
    Se=ones(5,5);
    Out=imdilate(G,Se);
    Out1=imerode(Out,Se);
    Out2=imsubtract(Out,Out1);

Answer 1

[Image Analyst]

Try using [] in imshow():

Out2 = double(Out) - double(Out1);
imshow(Out2, []);

[kavya p]

Thanks for ur suggestion.This suggestion may work for pixel of width more than 1

[Image Analyst]

Uh, yeah. It doesn't really have anything to do with a pixel "width".