How to find the coordinates of the white square ?

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Alaa Abusbeih
Alaa Abusbeih 2019-2-20
编辑： Matt J 2019-2-21

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Matt J
Matt J 2019-2-20
编辑：Matt J 2019-2-20
Some simple morphological operations are all you need.
A=imbinarize((imread('image.jpeg')));
A=bwareafilt( imopen(A,strel('disk',5)) ,1);
[I,J] = find(A); %The desired coordinates??
imshow(A)
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Matt J
Matt J 2019-2-21
编辑：Matt J 2019-2-21
A is the image, as displayed above, with everything but the square removed. I and J are the matrix coordinates of the non-zero pixels of A, see FIND.

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