removing one-voxel bridges between clusters?

Say I have a 3D computed tomography (CT) image, which I convert to a binary image of ones and zeros. I would like to remove one-voxel bridges that attach two larger clusters of ones together to get two seperate clusters instead of one. How would I go about this?

Answer 1

[Matt J]

Perhaps using imopen?

[sukhraj virdee]

I am unsure how to go about this

[Matt J]

As an example,

load BWImage

figure;
imshow(BW);

figure
imshow(imopen(BW,strel('disk',3)));

[DGM]

Or perhaps

strel('sphere',1)

since the image is volumetric

[sukhraj virdee]

This seems to remove clusters smaller clusters smaller then 9 voxels in size. What if I would like to keep those?

[Matt J]

Save the smaller clusters to a separate image using bwareafilt or bwareaopen. Then use that image to restore them later.