Register 360 Cloud To Cloud for Projects with Vegetation

[leadingscans]

Hi,

Fairly new user here. I am currently using Register 360 to model a bridge with large amounts of vegetation surrounding it. The team that took the data on the bridge did not use targets, so I have been using the C2C method for creating links. I am trying to create a more robust linkage, as I currently have a few weak links and other suggested links that Register 360 refuses to automatically create.

I was wondering if anyone has any recommendations for how to approach this problem. I have already done some cleaning of the bridge model using Quick Limit Boxes to remove people and other moving objects from the bridge. I was wondering if I would be able to use the fencing feature when looking at the Bundle Cloud of the bridge to try and select only the stationary bridge for C2C point considerations. Could I do this now, or would it delete the work that I have done in cleaning the moving objects from the surface of the bridge.

Thank you all for the help! Any advice is greatly appreciated.

[badam]

Hello

Well if i recall correctly if the points are not visible (already cleaned from moving objects) then you cannot delete them from bundle cloud only in visual alignment, however if the points visible and you can "select" (highlight) them, then just disable visible point and enable c2c point during deletion on the bottom bar. If you do it like this it won't touch your visible clouds.

However just to be sure you have a copy of the project files, because reg360 had a lot of issues with bundle cloud cleaning since the begining. There are notes in the release notes when was one fixed, but who knows if there are a new one.

If you really need to i'd use ortho mode, without any view changes like setups from sitemap/hidden setups/clipping box.

You need to find the bugs you have in your version.

But i'd probably do it inside visual alignment faster to process, no errors, (just user), and probably more precise..

As for the term of "static bridge" a little bit vague. Bridges never rigid they can move a lot especially if the wind was big, or was heavy trafic on top.

[StasIV]

Hi,

If I understand it correctly, you already cleaned moving objects with the fence tool and have scans linked to each other in one bundle.

To improve registration, you need to remove vegetation from Q2Q including trees, bushes, grass etc since they only negatively impact results. It's the same workflow as the fence tool.

Example how to handle this:

- Get everything in one bundle if possible
- Open that bundle
- Use the fence tool to highlight vegetation
- Select "remove from registration". This would not remove points in the final export but only exclude them from Q2Q calculations.
* Alternately, you can remove "both" visible and registration points. Depends on what you need
- Run Q2Q on all links again. Use visual alignment to redo some of the existing links and add new ones.

This should improve cloud alignment if there is enough geometry. Another option is to manually add virtual targets to stitch scans together.

Double-check your Q2Q settings. I would suggest a 0.200m search distance, 20% cloud use, 500 iterations and continue adjusting them if needed.

There are more familiar Reg360 users than me but listed above it should get you better Q2Q results.

Don't forget to slice through data in X,Y,Z planes to verify results.

Cheers