I have been solving the problem for some time and so far without success.
I found several topics here that deal with something similar, but none of the advice I found helped me.
At the same time, I am relatively new to Pix4D. So maybe the solution is trivial.
So far I have transformed the measurements from the drone to our local coordinate system S-JTSK East North EPSG 5514 and there has been no problem.
However, practical circumstances force me to work in S-JTSK South West EPSG 5513 → This is where the problem arises… The entire measurement is suddenly upside down (the cameras are oriented from bottom to top, the lowest point is the highest, etc.) - see photo.
I’ve already tried a lot, but nothing helps - I’d appreciate any helpful advice.
I tried version 4.4.12 and the problem went away. However, I probably know the reason. EPSG 5513 should be a positive coordinate system and in this version it is negative. In the latest version it is correct - there is a positive.
Tested in the field… the measurement is no longer upside down, however the whole measurement is shifted by about 3 meters (see picture). I measured the points with a GPS stick.
We need this measurement for projecting blasting work at quarries. Subsequently, we transfer the planned holes to the smart drilling rig, which also has a 5513 coordinate system and it completely matches the points measured with the GPS stick.
It is therefore important that the entire measurement with the drone (or coordinate system) matches the one in the drilling rig.
I confess that I have no idea what the problem could be - why is the whole thing shifted by three meters.
I don’t know what it is, but I can’t download a .prj file from the page mentioned above (it always only downloads a .txt and, moreover, with a completely different content than in the .prj file)
Can you please do the same for EPSG 5228 and send me the .prj file here? - I think that could be the solution.
Thank you in advance.
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