3d skeleton branchpoints

Question

Marco Festugato 2019-5-1

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/459615-3d-skeleton-branchpoints

回答： Constantino Carlos Reyes-Aldasoro 2019-5-9

Hi all,

I have a 3d skeleton of which I want to calculate the number of branchpoints. Is it ok to use this code?

bp = bwmorph3(skel, 'branchpoints');

cc = bwconncomp(skel,18);

numberOfBranches = cc.NumObjects; % 1object = 1 branchpoint??

I attach an image of my 3d skeleton and of the branchpoints

Thanks in advance for any help!

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Answer 1

Constantino Carlos Reyes-Aldasoro 2019-5-6

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https://ww2.mathworks.cn/matlabcentral/answers/459615-3d-skeleton-branchpoints#answer_373805

Something does not look right. Specifically, the skeleton should be a line, and you do not seem to have any lines, just disconnected points.

Why don't you first detect the skeleton and display it, then manually count your branching points and then you can validate that the result of the branching points obtained with matlab is correct.

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Marco Festugato 2019-5-9

编辑：Marco Festugato 2019-5-9

Hi Constantino and thank u for your answer. I don't know why the skeleton looks like that (maybe it's because of the bad quality of the original images?), I just used the MATLAB function (for what I know, it's the only 3D skeletonization function in MATLAB, is that correct?) and I dont know how to improve the skeletonization!

Any suggestions?

Best Regards

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