CloudCompare forum

Hi all,

I was wondering if there was a way to scale point clouds in cloud compare?

For instance, if I had two objects that were roughly the same shape (i.e. spheres) but different sizes, is it possible to scale the smaller object to the larger one or vice versa so I could then align the two point clouds and see how different they are?

Thanks

Indeed,

Look at the "Edit > Multiply\Scale" tool (you can scale each dimension separately).

Awesome, thanks so much!

Daniel, I have one question related to scaling as well. I saw that there is a good tool in CC for scaling a point cloud. I need only to set fx, fy, fz and then my point cloud is scaled to larger size or smaller size. I need to know that this functionality works according to voxel grid in PCL? or other kind of function is used? I ask this question since I want to change the scale of my point cloud by using PCL. and CC does it beautifully but I need do it inside of my code and I shouldn't scale it in CC and then use it in my code.


best regards,
Reza

No need to use PCV here, as we simply multiply the coordinates by fx, fy and fz (i.e. a simple loop on the points).

By the way, the standard version of CC is totally independent on PCL. Only the qPCL plugin uses PCL.

Thx for your straight-forward answer Daniel. So it means that we simply multiply the coordinates of each points in scale value, that's it. is that true??

Best,
Reza

If we both speak of the 'Edit > Multiply / Scale' method then yes!

yes! THX got it :)

best,
Reza

Do you guys have any idea why the multiply scale option may be grayed out?

Well it should only be enabled if one or several point clouds are selected. Maybe meshes also but I'm not sure right now.