How to isolate the circle from the shaded area?
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I would like to have only a shaded area from the picture. I want to remove the circle from the binary image. Any idea?
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/146996/image.png)
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Matt J
le 1 Fév 2015
How about
A=imread('http://www.mathworks.com/matlabcentral/answers/uploaded_files/24735/D1.png');
A=rgb2gray(A);
outer=~imfill(A,'holes');
outerd=imdilate(outer,ones(5));
newImage = A&~outerd;
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