CloudCompare forum

Hi,
I have two similar point clouds with 3.000.000 points: the second one has some differences, something like 100.000 points randomly displaced.
For example, I have the first point cloud of a city, with buildings, and the second one has the same city, with some missing buildings.
What I need to do is to highlight and select the differences between this two point clouds.
I see that, using ICP for registration and computing Cloud/Cloud distance, I can highlight these zones. But.. How can i get the location (x,y,z) and color (r,g,b) of the highlighted pixels?

Basically, I wish to want:

- distances from first cloud points to the second one (in order to manually select the points with distance below certain threshold)
- the subset of the pointcloud with the points that are different

Is it possible?

Thank you in advance for any advice.

You can interactively 'highlight' the points within a range of distances (see the section 'Scalar field display parameters editor' here: http://www.cloudcompare.org/doc/wiki/in ... properties). And you can also extract the corresponding points with http://www.cloudcompare.org/doc/wiki/in ... r_by_Value.

daniel wrote:You can interactively 'highlight' the points within a range of distances (see the section 'Scalar field display parameters editor' here: http://www.cloudcompare.org/doc/wiki/in ... properties). And you can also extract the corresponding points with http://www.cloudcompare.org/doc/wiki/in ... r_by_Value.

Thank you, very helpful. Your work is great.

Is it also possible to do it by command line?

If you already know what is the range of distances you want to select, then yes: http://www.cloudcompare.org/doc/wiki/in ... _line_mode