EndPoints in 3D skeleton

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Hege
Hege 2021-4-6
评论： Hege 2021-4-12
I have a 3D Skeletonized Micro-CT Fiber model which obtains completely seperated 7 volumes(fibers). I would like to find the endpoints of each and every fiber and I used below commands to find the end points.
B1=bwskel(testvol,'Minbranchlength',20);
BP = bwmorph3(B1,'endpoints');
Endpoints_Cor=regionprops3(BP,'VoxelList');
stats4=regionprops3(B1,'Volume','VoxelList');
However, my model obtains 7 volumes which are completely seperated. But it gives only 13 endpoints(But I am expecting 14 end points.7*2=14). I noticed one of the endpoint of my third volume does not obtain in the end point list. only one end point is in the list. Could you please explain how I should obtain all the endpoints in each and every volume and why I am missing one endpoint of the third volume? And also, is there anyway to categorise which endpoints belongs to which volume?
Your answers are highly appreciated!

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采纳的回答

Image Analyst
Image Analyst 2021-4-7
bwmorph() has an 'endpoints' option. The image should be a skeleton. bwmorph() also has a skeleton option but I think bwskel() has a better algorithm.
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Image Analyst
Image Analyst 2021-4-8
You can do a brute force loop to find the distance of every point to every other point.
Hege
Hege 2021-4-12
Thank you so much Image Analyst! I really appreciate your answer.
What I did was, found the minimum distance for each and every voxel and rearranged the regionporops3() data as I want using a one ending point of each volume.
Thank you so much!

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