How to clear objects connected to the lower borederof the image?
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Richa Nayak
on 29 Mar 2013
Commented: ammar roslan
on 23 Jun 2021
There are 10 objects in my picture of varying sizes. two of them are connected to (contain) the lower boreder of an 80x80 image. The image is binary. I do not want to use bwareaopen.Plzzzzzzzz help. Thank You
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Steve Eddins
on 29 Mar 2013
% Start by padding the image with 0s on the left, top, and right.
bw2 = padarray(bw,[1 0],0,'pre');
bw3 = padarray(bw2,[0 1],0,'both');
% Remove objects touching the border of the padded image.
bw4 = imclearborder(bw3);
% Remove the padded columns and padded row.
bw5 = bw4(2:end,2:end-1);
3 Comments
Steve Eddins
on 29 Mar 2013
Yes, it will remove only the objects connected to the lower border. That's the reason for the first two lines (padding the image) and the last line (removing the padded columns and row). Follow the link to my blog post for more explanation about this technique.
ammar roslan
on 23 Jun 2021
Hi Sir Steve, i want to ask. How can i remove objects that connected to the upper border?
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