Alling and merge two point clouds issue

[MaironIV]

Hi, i'm trying to merge one point cloud to another (or a mesh) but i have a problem importing the first one.
I registered the point cloud on Recap and i exported the e57 without the scans in order to have a single e57 file. When i import to Cloud Compare i can see all the 339 scans in the left box so, when i import the mesh, i cannot merge them because i have all the scans separate. How do i solve it?

thank you very much

[daniel]

Well, normally you can select all the scans (either manually or by right clicking on the top group containing all the scans and using the 'Select children by type and/or name' option). And then you can merge them with 'Edit > Merge'.

And mind that it's not possible to merge a mesh with a point cloud (you'll have to mesh the cloud first, or sample points on the mesh).

[MaironIV]

Hi Daniel, thank you for your reply.

I started the process of merging the scans and i'll post the result here as soon as it is complete.

So here is the problem.
I have a point cloud made by a laserscan (very big, 339 scans of a little town) and a mesh model (made by photogrammetry) in Reality Capture. With the laserscan i do not have the roofs of the buildings but with the drone images yes.
It is better to merge two mesh models or two point cloud? The final result should be a mesh textured model and i need also the analysis of the medium error between the two models.

[daniel]

So first, CC cannot generate textures (it can preserve the existing ones if any, but it cannot generate new ones).

But I bet, for your needs, it would still be better to merge 2 meshes...

And CC can generate error maps in terms of distances between the 2 data sets (if that's what you are referring to as 'errors')