Geo referencing Pont cloud to GPS coordinate system

Feel free to ask any question here
Post Reply
Olib
Posts: 1
Joined: Wed Oct 23, 2019 5:51 pm

Geo referencing Pont cloud to GPS coordinate system

Post by Olib »

Hi All

Sorry if this question has been asked before.

I have Lidar datasets of tunnels in a local coordinate system and I have ground control points in degrees of where the tunnels reach the surface. I am looking to georeference these point clouds and import them into ARC gis So that I can have the base map on top with the tunnels extending below.
I have tried aligning the point clouds with the control points but that is not working as I cant select the points on the point cloud and the reference field uses such different coordinates.

It would look so cool if I get it to work, So any advice on how to make this happen would be greatly appreciated.
daniel
Site Admin
Posts: 7717
Joined: Wed Oct 13, 2010 7:34 am
Location: Grenoble, France
Contact:

Re: Geo referencing Pont cloud to GPS coordinate system

Post by daniel »

Have you tried the 'Align' tool with a 'Perspective' projection mode?
Daniel, CloudCompare admin
Creeno
Posts: 1
Joined: Fri Oct 25, 2019 8:20 pm

Re: Geo referencing Pont cloud to GPS coordinate system

Post by Creeno »

What would the Perspective projection mode do in this case exactly?
Here are the best standing desk chairs I found online.
daniel
Site Admin
Posts: 7717
Joined: Wed Oct 13, 2010 7:34 am
Location: Grenoble, France
Contact:

Re: Geo referencing Pont cloud to GPS coordinate system

Post by daniel »

You can "walk" inside the tunnel and select the points inside.
Daniel, CloudCompare admin
Post Reply