CloudCompare forum

My question is as follows. How to compare the cloud to the cloud so that the results are the most realistic?
I translate:
I do the following according to this tutorial:
1. I use the icon-Aligns two clouds by picking to align point clouds
2. Then the icon - Finely registers already
Unfortunately, the scale that shows up later gives very high values - unreal

When I do the second method, I use the compute cloud / cloud distance icon. The scale has different values than in the 1st method - more real

My question is as follows. How to compare cloud to cloud?

Can you maybe share a screenshot of your current result?

(and mind that the C2C tool will compute the distances from all the compared point to the reference points. Even if a point has no equivalent in the compared cloud, the C2C tool will find the 'nearest' one in the compared cloud and assign the corresponding distance to it.

To cope with these issues, I would advise to segment the compared cloud to have only overlapping parts with the reference one), or to use the more evolved M3C2 tool.