TXT file

[anaateixeir]

Hi, everyone. I am still having problems with GCPs in WEBODM. Does anyone have an example of the .txt file I should put into ODM and an example of the .txt file that ODM exports?
It would help me a lot, I need to process some images for my qualification, and I’m stuck because of these problems.

[Saijin_Naib]

Have you checked the documentation on GCPs already?
https://docs.opendronemap.org/gcp/

[Laurent]

Hello Annateixeir,

I’m like you, I struggle, but I made this discovery:

I downloaded the allzip* (*resources) and in the odm_georefencing file there is a pro.txt file.

Hope this helps, I’ve given up on my side for now, I don’t print

Laurent

[Bernhard_Hofmann]

Hello anaateixeir,
i dont know where you are located, but here i have two examples the gcp - *.txt file should look like.
These examples are in germany:
With UTM coordinates:

+proj=utm +zone=33 +ellps=WGS84 +datum=WGS84 +units=m +no_defs
gcp01,350124.187,5378886.248,354.996
gcp02,350171.539,5378850.175,355.565
gcp03,350200.719,5378877.688,354.780
gcp04,350229.974,5378926.109,354.414
gcp05,350261.697,5378907.619,353.495
gcp06,350316.429,5378887.556,356.739
gcp07,350286.926,5378960.073,352.131

With WGS 84 coordinates:

EPSG:4326
GCP1 13.3946167884 48.6053555837 416.338
GCP2 13.3956520364 48.6051993480 416.274
GCP3 13.3959165330 48.6048034344 416.568
GCP4 13.3965403585 48.6053067037 420.999
GCP5 13.3951768978 48.6057379331 420.827

You can start the GCP Interface on the WebODM Dashboard and load your gcp file.
If everything is correct, the locations of the gcp´s are shown in a map on the right window of the interface.
In the left window you can load the droneimages. Choose a image that contains one or more gcp´s by doubleclicking. Zoom in to your gcp sign and add a mark by clicking the + -sign at the upper right corner of the image window. Confirm the mark by clicking the appropriate gcp mark in the map window. Both marks should turn to green. Repeat this until every gcp is marked in 5 to 10 images. Then you have to click the “export file” button on the upper right corner of the interface. This will generate a txt-file you can upload with your images to the WebODM processing-node.
I hope this helps, getting your work done.