RE: Aligning laser scan point cloud with photographs

Cameron Swanson — Fri, 03 Aug 2018 08:28:39 GMT

Thanks, this method seems to work quite well! Not quite perfect yet but I guess I could add some more GCP to improve this further.

Many thanks

RE: Aligning laser scan point cloud with photographs

James Worrell — Thu, 02 Aug 2018 12:00:54 GMT

I do this by picking coordinates of "structure" within the point clouds and applying those coordinates as GCP's in the photos. I assume you have a "registered" point cloud - so all the clouds are on the same coordinate system .. you'll have an E57 ready to roll in to CC.

A factory will have heaps of "structure" to pick from .. centres of bolts .. intersections of corners in 3-planes of surfaces .. corners of ducts etc ..

I tend to find I have photogroups of "runs" of images - 50 to 100 at a time perhaps - I tend to find it a challenge to get a great AT .. also check the "hints" in photos you haven't nominated control in, that have control - see how good the hints are compared to the GCP .. soon tell you if the AT is any good.