Reduce a model to the exact number of vertices

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roy-t
Posts: 1
Joined: Wed Oct 03, 2012 2:02 pm

Reduce a model to the exact number of vertices

Postby roy-t » Wed Oct 03, 2012 2:05 pm

For a research project we have to compare several meshes, unfortunately our method works best if the meshes have exactly the same number of vertices (faces are not important). Is there any way in Blender to reduce a model to an exact number of vertices? All I have seen so far is based on ratios, are inexact and usually involve faces not vertices.

CoDEmanX
Posts: 894
Joined: Sun Apr 05, 2009 7:42 pm
Location: Germany

Postby CoDEmanX » Wed Oct 03, 2012 11:51 pm

maybe export to PLY or similar and try meshlab?

i dunno any built-in method to reduce to an exact amount of verts...
I'm sitting, waiting, wishing, building Blender in superstition...

Creedo
Posts: 11
Joined: Sun Jun 05, 2005 10:53 pm

Re: Reduce a model to the exact number of vertices

Postby Creedo » Fri Oct 05, 2012 9:42 am

roy-t wrote:For a research project we have to compare several meshes, unfortunately our method works best if the meshes have exactly the same number of vertices (faces are not important). Is there any way in Blender to reduce a model to an exact number of vertices? All I have seen so far is based on ratios, are inexact and usually involve faces not vertices.


I don't think that's possible. If it works, then it will only be by coincidence.

Meshes are usually reduced by collapsing edges, so one or more vertices might be removed
when a single edge is collapsed.

jaxteeth
Posts: 3
Joined: Wed Nov 28, 2012 3:29 am

Postby jaxteeth » Wed Nov 28, 2012 9:39 am

Actually how to count vertex number in Blender?

CoDEmanX
Posts: 894
Joined: Sun Apr 05, 2009 7:42 pm
Location: Germany

Postby CoDEmanX » Wed Nov 28, 2012 7:46 pm

for a single object:

Code: Select all

len(Ob.data.vertices)
I'm sitting, waiting, wishing, building Blender in superstition...


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