3D reconstruction

[Andresilva0409]

Hey guys,
Guys, I have this point cloud (see image 1) with these holes and I want to create a mesh of it.
So when I create a mesh, cloudcompare fills these holes automatically(see image 2) and I don't want that, and I wanted to know if anyone here knows how to solve this problem.

Thank you.

[daniel]

I guess you should activate the 'Density' output?

See https://www.cloudcompare.org/doc/wiki/i ... n_(plugin), last section.

[DA523]

If you can not manage by using "Density' output", You can use segment tools to open a hole in the mesh.
Also, You can edit in Blender 3D software

[Gregnew]

Hey guys,
Guys, I have this point cloud (see image 1) with these holes and I want to create a mesh of it.
So when I create a mesh, cloudcompare fills these holes automatically(see image 2) and I don't want that, and I wanted to know if anyone here knows how to solve this problem.

Thank you.

To prevent CloudCompare from filling holes automatically when creating a mesh from a point cloud, you typically need to adjust the parameters or settings in the mesh generation process

[DA523]

In many cases, adjusting the parameters or settings in the mesh generation process does not help

for example, can we generate a mesh with a side hole in the attached pc example

[DA523]

To prevent CloudCompare from filling holes automatically when creating a mesh from a point cloud, you typically need to adjust the parameters or settings in the mesh generation process

I attached here pointscloud example with a small hole in its top, I can not adjust the parameters to generate a real shape mesh with a small hole in the top.
Any idea just to investigate the PoissonRecon limit

2 hole.zip

(497.55 KiB) Downloaded 127 times

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Screenshot (323).png (152.46 KiB) Viewed 1538 times

[daniel]

Yes, PoissonRecon density is based on the proximity between the original points and the reconstructed nodes...

That's a bit clunky, but you could maybe sample points on the total reconstructed mesh. Then segment the hole part (point cloud subest) and add it to your original cloud. And re-mesh again!