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this is what the code is

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kavya p
kavya p 2015-1-7
评论： Image Analyst 2015-1-29
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);

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Image Analyst
Image Analyst 2015-1-7
Try using [] in imshow():
Out2 = double(Out) - double(Out1);
imshow(Out2, []);
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kavya p
kavya p 2015-1-29
Thanks for ur suggestion.This suggestion may work for pixel of width more than 1
Image Analyst
Image Analyst 2015-1-29
Uh, yeah. It doesn't really have anything to do with a pixel "width".

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