How to stick a non-georeferenced submarine DEM with a georeferenced terrestrial DEM by aerial drone ?

Pix4D International
1

Hi community, I need your help :
How to stick a non-georeferenced submarine DEM with a georeferenced terrestrial DEM by aerial drone ?

Best regards,
Louis

2

Hi Louis,

Happy New Year and welcome to our Pix4D community!
You can georeference the submarine DEM manually in a third-party geospatial software such as QGIS. For this, you need some Ground Control Points with 3D coordinates (you can get them from field measurements or from a web mapping service provider such as Google Earth). This way, you can align the two DEMs, provided that both have the same coordinate system.
Here is a description of the process in QGIS: 15.2. Lesson: Georeferencing a map.

Hope this helps.

Cheers,
Teodora