why does `imfill` fill the whole image?
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Hi! I converted my image from HSV to bw, and then use `bwareaopen` to eliminate some background noise. After that I still find some 'holes' in the white disks that I need. So I was thinking to use 'imfill' to eliminate the holes. However, after 'infill', I either get a white image showing nothing (this happens when I didn't save the image out and directly called 'imfill' after `bwareaopen`) or the same image as after bwareaopen`. I don't understand why. Could somebody help me out? Thank you!
my codes:
bwIm2=bwareaopen(bwIm,10)
bw=imfill(bwIm2,'holes')
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Accepted Answer
Akira Agata
on 6 Nov 2017
You should delete light area connected to image border before applying imfill. By using imclearborder function before applying imfill, you can obtain the target image, like:
bwTmp = imclearborder(bwIm);
bw = imfill(bwTmp,'holes');
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