Change ground control points from Austria M28 to useable GCP in Web ODM

WebODM
#1

Hello everyone,

I´m using WebODM now and generating good images.
Now I try to insert the GCP´s in my file.
I understand the process and how to do it.

But how to convert my GPS measured points to usable points in WebODM?
Measured in M28 coordinate system - AUSTRIA

I tried a few different EPSG´s but none of them worked.

Example file:

EPSG:31254
EPDR1 -36425.184 252137.249 660.498
EPDR2 -36447.363 252146.300 664.982
EPDR3 -36442.487 252157.973 666.889
EPDR4 -36418.469 252151.086 661.132

Thanks a lot !

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1 Like
#2

Welcome, Anton!

Sorry for the trouble.

Our current CRS database is limited to PROJ4-compatible CRSs, and might be missing some EPSG definitions.

The best way to check is to use something like https://epsg.io to see if your CRS has a PROJ4 definition, and to use that.

So, for your case of EPSG:31254:

The PROJ4 string is:

+proj=tmerc +lat_0=0 +lon_0=10.33333333333333 +k=1 +x_0=0 +y_0=-5000000 +ellps=bessel +towgs84=577.326,90.129,463.919,5.137,1.474,5.297,2.4232 +units=m +no_defs

Available here:
http://epsg.io/31254.proj4

#3

Hello Saijin,

Thanks a lot !!

Anton

1 Like
#4

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