how to find the smallest object in the coin image?

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betty 2022-1-1

评论： Matt J 2022-1-1

how to find the smallest object in the image below ? the code I wrote below does not work

A = imread('eight.tif');

C=imbinarize(A, 'adaptive', 'ForegroundPolarity', 'dark');

figure,imshow(C)

BW3=bwareafilt(C,1,'smallest');

Warning: One or more ties for n-th place occurred when selecting objects. Some objects were not selected.

figure, imshow(BW3)

Matt J 2022-1-1

编辑：Matt J 2022-1-1

This should make it easier:

A = imread('eight.tif');

C=imbinarize(A, 'adaptive', 'ForegroundPolarity', 'dark');

C=bwareafilt( bwconvhull(~C,'objects') ,4);

figure,imshow(C)

betty 2022-1-1

yes, I think he finds the smallest object

Matt J 2022-1-1

okay, well if you think the problem is solved, then please Accept-click the answer to indicate so.

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