Orthophoto Generation Faile

WebODM
1

Hello all, I am trying to make a nice ortho photo but it always gives me the error:
“An orthophoto could not be generated. To generate one, make sure GPS information is embedded in the EXIF tags of your images, or use a Ground Control Points (GCP) file.”

  • I am running this on Windows PC with 3.5 ghz CPU and 16GB RAM
  • I installed WebODM with Docker Toolbox: tested with other shared images and worked fine
  1. I am only using 26 images that overlaps at least 60% of each other
  2. My drone images did not have any EXIF information so I added latitude and longitude manually
  3. I searched through some similar posts and noticed that some of the users are controlling the parameter values. I am so lost on what and how to use these options. What are some of the settings that I should use for orthophoto? Is there any link where I can go through and study what each does?
  4. My issue could be coming from insufficient EXIF data because I only added latitude and longitude. What are other information that should be added such as altitude?

Thank you!
Please see the following link for my task output history: https://drive.google.com/drive/folders/1SxYlhECwxWkkY3hAew3xSqjDHiPDl3Qw?usp=sharing

2

If you’re getting that message, it’s likely that the GPS information was not added properly (in a manner that ODM likes).

Check with exiftool ExifTool by Phil Harvey that your images are properly geotagged. The tags should look like:

GPS Altitude                    : 198.3 m Above Sea Level
GPS Latitude                    : 46 deg 50' 33.39" N
GPS Longitude                   : 91 deg 59' 40.42" W
GPS Position                    : 46 deg 50' 33.39" N, 91 deg 59' 40.42" W
GPS Latitude Ref                : North
GPS Longitude Ref               : West
GPS Altitude Ref                : Above Sea Level