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How to do mesh segmentation in Matlab

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maho
maho 2019 年 7 月 4 日
Hello,
my goal is to approximate/represent CAD-Meshes with primitive bodies, eg. cuboids, spheres, cylinders etc. in Matlab. I consider the segmentation of the models into coherent regions an important step towards that goal.
The following figures show a trisurf'd example model, out of which I would like to extract several cylinders and probably some cuboids.
tailstork1.png tailstork2.png
I am aware that there are several scientific papers on mesh segmentation and also some on primitive extraction. However, I have never before programmed an entire algorithm from a scientific paper.
What I am asking is: Does someone know a practical way of doing this in Matlab, especially some source code samples / Toolboxes for mesh segmentation and/or 3d primitive approximation?
Until know, I have found an tried:
  • Learning-Mesh-Segmentation, (I dont have the computing ressources to train the model), from here
  • ddcrpMeshSegmentation, requires multiple moved versions of the same model, from here
  • K-means, modified from this blog
  • some graph partitioning functions, many available, eg. here
Out of those, K-means looks somewhat promising and maybe some graph partitioning might also help. For the following primitive approximation, minBoundEllipsoids seems like a good way to extract orientations from the segments to me. I appreciate comments on that too.
Thank you very much

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