POSM GCPi will not recognize points in point_list.txt

Hi,
I am trying to use the inbuilt tool, apparently POSM GCPi, to make a gcp file.
I have set up my csv point_list.txt file as per instructions:
first line: crs (tried EPSG:3963 but this was not recognized so went with proj4 string)
second and following lines: comma separated values for pointName, X, Y,Z (see below). I am also attaching a picture of the file itself.
When I load this with the corresponding photos, into POSM it reads:

Ground Control Points
No points…

Any ideas as to what might be going wrong? Also, what is the correct sytax for using EPSG the code?
Thanks

+proj=tmerc +lat_0=39.66825833333333 +lon_0=-8.133108333333334 +k=1 +x_0=0 +y_0=0 +ellps=GRS80 +units=m +no_defs
P_01, 4872.4241, 160222.0009, 313.7536

1 Like

Removed commas and left only spaces as per Ground Control Points — OpenDroneMap 3.1.7 documentation and that fixed the problem. Still wondering what the syntax would be for using the EPSG code. Anyway proj4 string works.

2 Likes

Welcome!

Unfortunately, not every EPSG CRS is supported by our EPSG handler database, and not every EPSG CRS can even be modeled by PROJ4, so sometimes it is necessary to use the PROJ4 string, or an alternative compatible PROJ4 CRS entirely.

1 Like

Ok. Thx.

2 Likes