Importing surface pointcloud to the same cood system as underground point cloud

[arjun]

Hi,

I carried out an underground mine survey 2 years ago, and recently carried out a drone survey of the surface above so I now have 2 point clouds.

I'm looking to import the surface point cloud but as CC shifted the underground survey to a local coord system the new shift for the surface cloud means that it is in the wrong place.

Is there a way to calculate the shift I need to apply to the surface cloud in order for it to match the underground survey so they are both on the same grid?

Thanks

[daniel]

The 'global shift' that was used 2 years ago should have been stored if you saved the data as a BIN file (was it the case?). In this case you can read it in the cloud properties. And then use the same when you load the new cloud.

[arjun]

Thanks Daniel,

This is strange. I've had to re-align the scan as the original shift was not stored in the BIN file.

I've re-aligned the scan, but when I copy the transformation matrix to the surface cloud it is still in the wrong place.

Any ideas?

[daniel]

Hum, that's weird.

Did you copy the transformation from the console or from the "Transformation history" field? (you should prefer the first one I would say).