CloudCompare forum

Hi,
I have several pointclouds of short stretches of road surface.
Obviously, the road has crossfall and slope and so have the pointclouds.
What I am interested in are local height deviations, so I would like to rotate the point clouds to remove the tilt and have a more or less level plane.

My idea was:

• to fit a plane to the pointcloud
• subtract the plane

so that I get a level surface.

Plane fitting is easy with
Tools -> Fit -> Plane

There I get a transformation matrix and followed the hint shown (Apply Transformation).
Using "Apply Transformation" - using the inverse matrix and copying the 4x4 matrix was done - but the point cloud did not rotate the way I expected - it stayed more or less the same and the tilt is still visible when I look "from the side".

I am missing something here - is there anybody who could enligthen me?
Thanks in advance!

Can you maybe try with the 'not inversed' matrix? Normally you should get the plane normal to be parallel with Z, so the road shouldn't be tilted anymore...