CloudCompare forum

Hello, after registering and merging 4 clouds sharing partial coverage and meshing the result I ended up with something like the one attached.

top right : no coverage
bottom right : 2 coverage
bottom left : 4 coverage

I don't know what I messed up. When I Register and merge the separate mesh it doesn't happen. Only if I register and merge the clouds and then mesh the whole.

Any ideas?

thanks!

Which meshing algorithm are you using?

If it's Delaunay, then it's super sensitive to noise (as all points are use). And if the registration is not perfect, you'll see the local differences of height / alignment between the scans).

If it's Poisson, then it may be worth recomputing the normals (to get smooth ones despite the registration inaccuracies) and / or reduce the octree depth?

I used Delaunay after trying to carefully register them. However further tests showed that if worked with mesh instead of clouds I got better result. I suppose that meshes tend to not be affected by noise as much as cloud.

Thank you!