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Some Fixes when Auto-Rigging or Reshaping is not working | Automatic Rigging and Reshaping | Forum

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Some Fixes when Auto-Rigging or Reshaping is not working
November 25, 2015
8:40 pm
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Forum Posts: 52
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August 8, 2012
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Hi all,

We got some feedbacks about the tool and I think it would be helpful to discuss about some quick fixes when auto-rigging or reshaping is not working.

1. The algorithm requires the mesh to be a single connected component when performing auto-rigging and deformation transfer. Thus if the input mesh has some disconnected parts that are caused by scanning artifacts or are created by artists, the algorithm will fail and the input mesh will disappear.

2. If you only need auto-rigging capability, you can change the skinning method from "Harmonic Interpolation" to "Barycentric Interpolation" and de-select "Apply Body Reshaping". This will use a different skinning method that doesn't require a single component and skip reshaping. The skinning result may be slightly inferior but you should be able to rig the model correctly and export the result.

3. If you need reshaping, you would need to clean up the mesh to remove those small disconnected parts. 

This can be fixed quickly with MeshLab ( http://meshlab.sourceforge.net/ ) . The steps are :

a. Choose “Filter->Selection->Small Component Selection”, then “Apply

b. You will see some numbers at the bottom “Selection : v: xxx f: yyy”. If those numbers are not zero, then it indicates that the mesh contains disconnected components

c. Choose “Filter->Selection->Delete Selected Faces and Vertices” to remove those faces and all the vertices related to those faces

d. Then you can export the processed mesh as a clean scan.

From my experience, the clean up would work fine if you input mesh is a raw human body scan since you will only remove some small mesh artifacts. However, for mesh created by an artist, this clean up may actually remove some important mesh parts such as character's accessories. 

In the long run, I would hope to improve the tool and devise methods that will also work for arbitrary 3D models without clean-up. 

Andrew

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