Filling up the outer surface holes/gaps

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banikr 2020-5-21

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评论： darova 2020-5-28

Hello Matlab experts,

I want to fill up the gaps or open spaces in the the brown layer(skin). What would be the best way to do so?

Morophological operations like dilation is not feasible as it takes spaces from other voxels like yellow layer(bones).

I have shared the file in nifti format here: google drive link which can be read as

lab = niftiread('lab_superior.nii.gz');

Thanks.

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darova 2020-5-21

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HEre is a start:

h = strel('disk',5);
I1 = imdilate(yellow,h);        % imdilate yellow part (bone)
I2 = I1 & ~yellow;              % select outside region/area only
I = I2 & skin;

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banikr 2020-5-28

Hi,

bwlabeln works for images having no connected regions. For example, the 3D binary label has connected components(yellow marked in the image).

So it doesn't work.

darova 2020-5-28

im.png

What about this?

I0 = imread('im.png');
I1 = ~im2bw(I0);
I2 = I1*0;
for j = 1:size(I1,2)
    i = find(I1(:,j),1,'first');
    if ~isempty(i)
        I2(i,j) = true;
    end
end
imshowpair(I1,I2,'montage')