Removing black holes from within a white circles

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Hey, I want to remove the black patches that occur within the white circles, i tries using imfill(,'holes') but it turns the whole image white. I don't understand whats happening. Thanks

Accepted Answer

Image Analyst
Image Analyst on 28 Jul 2014
You have white stuff around the border of the image, which means that everything will get filled. So call imclearborder first
binaryImage = imclearborder(binaryImage);
binaryImage = imfill(binaryImage, 'holes');
If you need to put the white border back, let me know.

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