How to remove small portion in an image?

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Ahmad 2017-6-5

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评论： Ahmad 2017-6-10

I am segmenting liver from CT data. Its 2d segmentation on multiple imaging. I trained my system using deep learning method. Now the results of segmentation are as follows...

I want to remove the circle parts from my image. I already tried bwareaopen() function from matlab. Using bwareaopen() function I got the whole image white. please help me.

Thanks

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KSSV 2017-6-5

If you have the locations of those highlighted images, cant you replace those pixel values with black?

Ahmad 2017-6-6

I want to do automatically. sunkara manoj code working perfectly but now I need to smoothen the boundaries.

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sunkara manoj 2017-6-5

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https://ww2.mathworks.cn/matlabcentral/answers/343337-how-to-remove-small-portion-in-an-image#answer_269580

在 MATLAB Online 中打开

the result is a binary image but the part is extracted.

if true
I=imread('liver.png');
im = imclearborder(im2bw(I));
im_fill = imfill(im, 'holes');
s = regionprops(im_fill, 'Area', 'PixelList');
[~,ind] = max([s.Area]);
pix = sub2ind(size(im), s(ind).PixelList(:,2), s(ind).PixelList(:,1));
out = zeros(size(im));
out(pix) = im(pix);
imshow(out);  end