We've just acquired a few new UAVs from DJI in the past few years with some great technical specifications with regards to RGB+TIR imaging combinations, but we've also had some technical issues arise:
1. How are people dealing with the very special DJI radiometric jpeg format? It appears to be quite different compared to the FLIR r-jpegs, also with some hidden parameters.
2. How are people getting the best image alignment for TIR images in Agisoft or other mosaicking software?
3. How are people extracting the thermal data for vegetation from their resulting images, whether for precision agriculture or for plant phenotyping?
We've had some issues but we've also found some solutions on the way, though the most optimal procedure is still up for discussion!
Hi Jens, After a bit of inspection, it appears that the DJI radiometric jpeg format is a bit different from the FLIR radiometric jpeg. Both have the thermal data hidden in the exif file rather than providing a TIFF with the thermal data up front. Metashape has not be updated to account for the DJI format while it can read the FLIR format. Probably just a matter of time before it gets the update. Meanwhile, DJI provides an SDK with the tools to develop software for processing this and I found on the IRMapper tool on Github that does just this - https://github.com/s-du/IRMapper, which works great! Thanks s-du!
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