Hey there!
I have to calculate the volume of some boulders.
As they are naturally lying on the ground, I cannot get a perfect cloud as the bottom part isn't accessible.
I tried to generate meshes in Meshlab and CloudComapare, however I will always have some kind of strange "bubble" in the lower part, where point density is very low.
How can I avoid this? I tried all options but I couldn't find a way to do it properly.
I did Poisson Reconstruction and Ball Pivoting using various Parameters.
I don't need a super high accuracy, but with this result I cannot work...
I attached two example files, maybe you can help?
http://www.file-upload.net/download-115 ... e.pts.html
Thanks guys!
Which software for watertight meshes? (volume calculation)
-
- I have made <0 posts
- Posts: 6
- Joined: Mon Feb 22, 2016 10:05 am
- 8
- Full Name: Bastian
- Company Details: University
- Company Position Title: Research Assistant
- Country: Germany
- Linkedin Profile: No
-
- I have made 60-70 posts
- Posts: 64
- Joined: Mon Apr 18, 2016 7:33 am
- 7
- Full Name: Manuel Caputo
- Company Details: FARO
- Company Position Title: Software Developer
- Country: DE
- Linkedin Profile: No
- Has thanked: 6 times
- Been thanked: 12 times
Re: Which software for watertight meshes? (volume calculatio
If you get bubbles at places where you have enough points for a proper reconstruction, you have probably normals pointing into the wrong direction. The big bubble at the bottom where no input points are available is to be expected when using Poisson Reconstruction.
- Check your normal direction in MeshLab (Render -> Show Normal/Curvature) Make sure all normals point outside the boulder!
- Delete the bubble at the bottom manually after meshing (Use the select and delete tool)
- Close the hole at the bottom again with (Filter -> Remeshing -> Close Holes)