Removing black holes from within a white circles

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

Answer 1

[Image Analyst]

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.

[arjun]

Thanks a lot!it worked!