Surface Reconstruction from Scattered Points Cloud: MyCrust Robust
It is now available on Matlab file exchange the robust and new version of MyCrust.
I hope you’ll enjoy it !
MyCrust take as input a 3D scatter points cloud and return a tight, manifold, triangulation.
Remember that crust algorithm needs a cloud representing a volume, so open surface may give inaccurate results. For example : a plane can not be triangulated, half-sphere is in doubt, a sphere with a small hole shoud be good.
The more points are given the best the surface will be fitted, of course in this case you would have to wait more and in the worst case a memory help error may occurs. The best results are obtained with more points in high curvature feature.
The old version did not ensure the output surface to be a manifold so it could be used only for graphical purpose. In the new one a tight, regular manifold is returned. It as outward normals orientation, after using this algorithm is very easy to get an STL file from a point cloud.
I added a manifold extraction tool that also correct the errors (slivers) generated by delaunayn during the initial tessellation.
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5 Comments on Surface Reconstruction from Scattered Points Cloud: MyCrust Robust
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WS on
Wed, 30th Sep 2009 09:09
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Kevin Marchelak on
Wed, 30th Sep 2009 21:25
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ucd puri on
Sun, 15th Nov 2009 09:57
Hi Luigi,
excellent coding! Thanks a lot. Just a word on spelling… You always write “recostruction”, but it should read “reconstruction”. Since I came across this misspelling time and again, I just wanted to let you know.
Keep on and best regards,
WS
[Reply]
Hi, thanks for all your postings, they are fantastic. I read on your blog that using this function, the volume of the triangulated surface. Question 1) How do you do that.
I have another question with volume visualization.
i have a volume similar to as shown in this link.
http://www.mathworks.se/products/matlab/demos.html?file=/products/demos/shipping/matlab/transpdemo.html
When i using the alpha a value to 0.3 to visualise the inner structure similar to that in the above link . Now I want to calculate the surface area of that inner structure ONLY.Question 2) Is that possible, and how do i go about finding it.
I would be very thankful if you could please provide some guidance. I have tried to ask many people and posted this questions at many places but i never received any answer. Kindly help please.
[Reply]
Luigi Giaccari Reply:
November 15th, 2009 at 10:16
Hi I am afraid that what you have is volume data, like the input format of the “isosurface command”.
SInce I can not see your data I can give a clear answer.
If you’ll be more specific I’ll do it.
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Luigi Giaccari Reply:
September 30th, 2009 at 17:05
Thank you,
my english is the worst ever….I am working on it
That word is everywhere in my submissions I ‘ ve got a lot of work to do….
[Reply]