how to calculate the long axis of mesh in 3D

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Hi, I have a segmented longbone and display it as a mesh in matlab. I now would like to calculate the long axis of the bone (sometimes called the inertia axis too - see picture). Does someone know how I could do that with matlab? Is there a toolbox for this kind of information of a mesh?
Thank you very much for your help!

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Matt J
Matt J 2022-1-11
编辑:Matt J 2022-1-11
One possibility is to fit a cylinder or a 3D line to the surface samples. You can use cylindricalFit() or linear3dFit() available at,

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