If an issue has been identified with X series data there are two workflows that can be taken to rectify the situation.
Perspective
The project can be opened up or loaded back into Trimble Perspective and rectified there.
If the project no longer exists on the tablet it can be loaded back into the tablet by copying the data onto a USB and inserting that into the tablet and in Perspective selecting Import in the top right corner of the Project view.
Once the project is in Trimble Perspective:
- Open the project.
- Identify the link that is causing the problem in the scan data and select Edit link.
- In the Edit link view, break the link with the issue.
- Move the station with the circle so the blue and white data overlaps visibly.
This doesn’t need to be mm perfect, but close enough. Selecting the edge of the circle will rotate the data. - Click Register to register the data.
Once the data has been registered and the issue is resolved, check the rest of the data and ensure there are no other issues elsewhere.
When finished, export the project again making sure that all options are selected on export and import that clean dataset into TBC for registration.
Alternatively if it is tough registering the data, there is the split view option in the top right of the registration window where a view is put in the two stations being registered. In this option two points are matched in each view register against. It is recommended that the two unique points are at different faces in the area are used to match up in each window. The matching pair doesn’t need to be in exactly the same location in each scan.
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TBC can also be used to break and re-register individual scans. Unlike Perspective where the links are broken and groups of scans can be moved and registered, TBC needs all scans that have a registration issue to be broken out and individually registered back in. Sometimes it may just be easier to break out all scans inside of TBC and register them all again.
In the case above, which is the same dataset as used in the Perspective example, to fix this in TBC:
- Load the Register Scans tool inside of TBC.
- Select the Pairwise tab inside the tool once loaded.
- Select Unlink next to all the scans that need to be unlinked.
- Change the dropdown list at the top under Reference station to be {1(Q1)…
This will set the first scans to be held fixed and we are registering the additional scans to it.
- Automatically one of the scans in the incorrect position will be put into the Moving scans window.
- Select Automatically Register pair
- Check it looks correct in the views.
- Add to reference.
- Repeat steps 5 – 8 for all additional scans.
IF there are problems still registering the data but there is good overlap, point pairs can be selected like the split screen view in Perspective.
In TBC this is done in the section below pick point pairs, where a point is selected in the scan data in the top right (reference station) and a point in a common location is selected in the scan data in the top left (moving station). When the pair has been identified it will automatically match. Additional points can be selected here if needed to improve the registration.
TIP: When selecting multiple points for registration using the Pick Point Pairs, untick Auto-Align until just before the second point of last point pair is selected, and then turn it on before picking the last point.
This will mean multiple point pairs (2 or 3) can be identified first without the system aligning them after each pair is selected. Having this ticked on also improves the registration process when compared to if it is off.