Colour points to Houdini

[Jack Wolf]

Hey Every one,
Any one managed to get colour point clouds into Houdini?
We have managed to loads the point cloud files into Houdini but cant apply the colour values or project a texture. 
Any tips?
Thnks,
Jack

[Jack Wolf]

Another possibility is Cinema4d but we are experiencing similar issues.

[Jedidiah Mitchell]

I actually just did this today as a test, so I can say yes it does work. You need to bring in a meshed object to get UVs though, and then transfer the UVs to your point cloud with an attribute promote node followed by an attribute transfer node. This is roughly what my network looks like:

And the results are what you'd expect:

1.) The incoming alembic is a regular mesh out of Brekel

2.) The Add node is used to strip away the primitives and leave you with a point cloud

3.) The Attribute Promote node is to reclassify your UVs from vertexes to points (since you won't have any vertexes after stripping primitives)

4.) The Attribute from Map node just applies the texture to uv points as regular Cd values

You could also export both a mesh and a point cloud from Brekel and use two inputs instead of the Add node to strip primitives, but I don't think that would be much faster. 

[Michela Ledwidge]

Would it be possible to attach a sample network? I had this working ages ago but no joy in latest version. Not getting any UVs in the ABC

Could you also post the Alembic export settings you used? 

[Jedidiah Mitchell]

I'd be happy to take a look -- been a while since that post so all the files are archived right now, but let me see if I can dig them up in the next week. 

[Elliott Mitchell]

Following up on this thread. Is there a sample network for this workflow available?

Thanks!