Is it possible to match locally instead of globally?

[tiger1984]

Hi, I work for a 3d printing model website,

My use case is really Mesh to Mesh matching, but I guess my question apply to cloud to cloud matching as well.

I am wonder whether it is possible to matching locally.

As an example, in the picture, there are two meshes,
the one of the left is partially exactly the same to the mesh on the right.

But when I try to match them, it takes the one on the left to the "center" of the right.

But what I wish is to match the on the left to exactly where it is on the right, is it possible?

Screenshot from 2018-04-03 14-24-49.png (159.96 KiB) Viewed 612 times

[daniel]

First if you refer to the ICP registration tool, then you must roughly align the entities first! You have to move the mesh on the left roughly above the one you desire on the right (with the Rotate / Translate tool for instance - see http://www.cloudcompare.org/doc/wiki/in ... ation_Tool).

If you still observe that the aligned entity 'slides' on the reference one, then you can also cut the reference one so as to isolate the right part. But in your case you shouldn't need to do it (with the scissors tool).

ICP is not a magical 'shape matching' tool ;)