S2: Step-by-step-guide using MeshLab in the work flow.

Paul Kalke, Conrad Helm

Published: 2022-11-02 DOI: 10.17504/protocols.io.j8nlkk59dl5r/v2

Abstract

How to do data refinements like repair, smooth and simplification in MeshLab and export as -ply-file.

Steps

1.

•Open MeshLab

•First step is Cleaning and Repairing your mesh-irrelevant if it is generated by Image J, Amira or any other software, the steps are the same

•Often used procedures/steps:

  • Remove Duplicate Faces

  • Remove Dublicate Vertices

  • Merge Close Vertices

  • Repair non Manifold edges by…

•Just try out, the results are written in the downright white window

--> Also see: more specific

https://www.youtube.com/watch?v=aoDLrXp1sfYhttps://www.youtube.com/watch?v=j9EKk3Bs1TQhttps://www.youtube.com/watch?v=gWBm5XGRJOk

--> more general

Mister P. MeshLab Tutorialshttps://www.youtube.com/playlist?list=PL8B1E816EAE236B4D

2.

•Now re-mesh your label by Remeshing: Isotropic Remeshing

•You can do that multiple times but 1 or 2 is enough to change the topology of your vertices in a more regular distribution

3.

•Result of re-meshing shown in Blender

4.

•A smoothing step is possible here but not obligatory

Taubin smooth or Laplacian Smooth are suitable and can be used also multiple times

5.

•Result of 2 times Taubin Smooth shown in Blender

6.

•Now you reduce the size by decreasing the vertices of your label/surface by Simplification: Quadric Edge Collapse Decimation

7.

•Result of 2 times simplification shown in Blender

8.

•Save label as .ply-file

•Repeat all described steps for each label or batch of labels by opening a new file

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