Some DJI XMP tags are not copied correctly

[pierotofy]

First reported here: https://community.opendronemap.org/t/thermal-processing-tool-strips-out-rtk-coordinates/23644/3

[johnsonder]

I am having the same issue with this. For the interim I will make sure for thermal projects I fly with RTK off. Not optimal, but expect it will work. Thanks for your efforts here, the tool is great.

[johnsonder]

Ah, I would like to adjust my previous comment. After doing a comparison of the Exif for a thermal image from my M30T drone taken at the same time as a wide angle, noted that the GPS coordinates are different and GPS Status are different.

Thermal Image

Image Source : InfraredCamera
Gps Status : Normal
Altitude Type : GpsFusionAlt
GPS Altitude : 427.2 m Above Sea Level
GPS Latitude : 42 deg 5' 37.74" N
GPS Longitude : 79 deg 14' 48.34" W

versus

Wide Angle Image
Image Source : WideCamera
Gps Status : RTK
Altitude Type : RtkAlt
GPS Altitude : 418.7 m Above Sea Level
GPS Latitude : 42 deg 5' 37.64" N
GPS Longitude : 79 deg 14' 48.26" W

I think this might be a change to the RTK handling in their Thermal Camera processing where they are not writing the RTK values to the GPS outputs, or they are not engaging the values. Looking at the raw thermal photo file, not seeing any RTK values...

[johnsonder]

Ok, one more image set for you. The one above looks like an error with the flight configuration. Here is another set from a different flight where Thermal Camera did grab RTK data (not sure why the other one didn't)

Thermal Image
File Modification Date/Time : 2025:03:31 14:14:34-04:00
Rtk Flag : 50
Rtk Std Lon : 0.04852
Rtk Std Lat : 0.07090
Rtk Std Hgt : 0.09974

Wide Angle Image
File Modification Date/Time : 2025:03:31 14:14:34-04:00
Rtk Flag : 50
Rtk Std Lon : 0.04872
Rtk Std Lat : 0.07100
Rtk Std Hgt : 0.09987

When I stitch and map the images using WebODM the wide angle images are right on with the Google Maps satellite imagery, thermal images are offset. I will raise this with DJI and see if I get anything back...