Picking GCPs in WebODM

[@juancarlosastrozaoyanguren4839]

how did you get the xyz of those GCPs? thank you! great video!

[@fkeb37e9w0]

Could you provide us with the Images, so we can try it as well, since we do not have drones, it is difficult for us to do the hands-on.

[@mikariekki5708]

Is it possible to use projected coordinates at all?

[@jeremymaurer9554]

Hi @mikariekki5708, I believe that WebODM will always use the closest UTM CRS to georeference a dataset, and the GCP file is also internally projected to UTM during computation. See community.opendronemap.org/t/coordinate-reference-system-and-gcp/4486

[@mikariekki5708]

​@@jeremymaurer9554 Thx, didn't know what proj string etc meant and EPSG: 3879 didn't work. Found out later that I could get the correct coordinate definition in the old string format from ie. QGIS, and that worked. I wish the plugin would filter relevant photos by gps. Only used WebODM and GCP's in one mapping mission so far now. Before that I used Recap Photo for other projects where a surveyor took the GCP's. That was a more streamlined experience, but but both need the coordinates given in a precisely correct format. Ie. Recap Photo doesn't accept commas and uses points since its US based, and WebODM the other way around, also need to flip the X and Y coordinates for both programs. And WebODM doesn't accept tabs, but uses space instead. :/