Model Generation : Cleaning 3D models with MeshLab
3D Mesh Changes in MeshLab
- 1.Open MeshLab and load in the mesh: File → Import Mesh → [Select your mesh]
- 2.To clean up your mesh, apply tools in Edit or Filters. Some very useful filters include:
- Filters → Cleaning and Repairing → Remove Isolated (wrt Diameter)
- Adjust the max diameter percentage until artifacts are removed.
- Clean any undesired artifacts smaller than the desired final mesh.
- Filters → Remeshing, Simplification and Reconstruction → Simplification: Quadric Edge Collapse Decimation
- Reduce the vertex count of the mesh for reduced file size.
- Adjust the Percentage reduction parameter to simplify the mesh. Because this is a percentage, it’s helpful to begin with a larger value to be preserved (e.g. 0.8) and work down from there. The current vertex count can be viewed in the bottom right (purple window).
- Click Apply to simplify the mesh accordingly.
3. To save the final mesh:
- 1.
- 1.File → Export Mesh As
- 2.Select .obj at the bottom of the popup menu and select your desired directory.
4. If your mesh contains unconnected parts that you want to export separately:
- 1.
- 1.Make sure the Layer Dialog is toggled on and find your mesh (there should only be one for now).
- 2.Right-click on the mesh name and click Split in Connected Components in the drop-down.
- 2.
- 1.IMPORTANT: If your 3D Slicer OBJ contains a lot of artifacts (they usually do), make sure you followed step 2a. properly. If not, all artifacts will be separated into individual meshes, which may crash the program.
- 2.Select each separated piece of the mesh and export them individually as described above.
5. Congratulations, you now have a clean, segmented mesh!