Merging a unreferenced laser scan with geo-referenced UAV photogrammetry
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Hello,
We are trialling laser scanning and photogrammetry together for the first time:
- UAV photogrammetry: P4RTK with 20MP camera; doing an overall area perpendicular flight with 60deg angle and close-range pictures of a few buildings/stands
- TX8 laser scan: doing laser scans from the ground.
The P4RTK images are geo-referenced while the TX8 scans are in a local coordinate.
Is there a way to merge both datasets; for example, to get a few coordinates from the photogrammetry (only) project and manually find those points in the laser scans and use it as GCP? Would it be something I can do on RC or do I need to do that while registering the laser scans?
Kind regards,
Romain
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This is an interesting topic.
I've faced recently several cases where some laser scans of one survey are correlated to the images, but not all of them. We've tried intensity and RGB values, locked and draft position, no position at all, etc. We've tried GCPs, changing the images resolution : nothing seems to explain why some laser scans of the same area do match with the images and other don't.
Debugging theses inconsistencies is awfully time consuming. And it's been 2 years 1/2 that we use RC every day.
Some detailed recommendations from RC team would certainly be useful to the community, and duly appreciated! :)
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Sounds good Erik Kubiňan CR.
We just finished the laser scan so we will try it once back in the office and let you know how it goes.
Cheers,
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