I am using imagery collected by a DJI Phantom 3 of a salt marsh. I am trying to generate an orthograph using corrected points created by Trimble Pathfinder. I am loading the points into QGIS and using the Montana State UTM Converter to get my Northing/Easting, then I am using the altitude of the drone for my Z, and finally obtaining the pixel values from markers we placed on the ground in the images that correspond with the GCP. I’ve checked all of this information several times and have not been able to generate an orthograph, any insight would be very appreciated! The GCP text file I’ve been using is pasted below,
Yes, at the end of processing it says that I need to include a GCP file. In the window on the side of WebODM it states that it cannot find points that match the images.
The problem is due to case sensitivity (lowercase and uppercase letters are treated differently) in the filenames listed in the GCP file. I changed the GCP file to use “.JPG” instead of “.jpg”:
I use WebODM on Windows with Docker Toolbox. I would like to use GCP-s. I make the txt file named gcp_list.txt.
But I don’t know how to use it? How can I load the file to WebODM?
I copied the GCP file to the folder of my photos, but does’n work.
This is my GCP file, separated with spaces. What is wrong?
I don’t know if the crlf line endings will be an issue, but I do know we are having problems with angular coordinate systems (lat-long). You should try converting those to UTM or your local state plane CRS.