Mesh from point cloud


#1

Hello everybody,
I try to create a mesh from points.
Therefore i try this with to functions?
First:
Rhino meshfrompoints
result:
very quick but there are hills in the mesh. Anyone know why?


Second:
With RhinoResurf function rspoints2tri
result: PC locks up
Can anybody help me?


#2

How many points are in your mesh? If it’s not millions, I might try the Rhino function MeshPatch…
I don’t know why the RhinoResurf locks up your computer, do you have a license or trial version? If so, the people who created it should be able to help you.

–Mitch


#3

Thanks for your answer.
I have over one million points. And the rhinoresurf version is a trial version.


#4

OK, for Rhinoresurf I would contact them directly for answers. If you have a terrain-type model, the Grasshopper Delaunay component works well or try the RhinoTerrain trial version, but it will not be great for topologies that have undercuts or overlaps.

–Mitch


#5

Ok Thanks.
It is no terrain-type. I have points from a CT scan.


(Pascal Golay) #6

Are there any ‘outlying’ points in the point set that would account for this?

-Pascal


#7

No there no outline points.
That’s the strange!


(Pascal Golay) #8

Yeah, the algorithm there is a ‘marching cube’ one so it does lead to some noise- notice the mesh vertices are not on the points at all but rather in a grid near the points. Setting sampling density smaller might help, or boost the 'NumberOfContourngGridCells.

-Pascal


#9

Ok thanks,
I try it!