[gdal-dev] Stitching and geo coordinating drone images

[Bo Victor Thomsen]

Try WebODM (https://opendronemap.org/webodm/). It's an open-source tool 
to this kind of work-flow.



Med venlig hilsen / Best regards

Bo Victor Thomsen

Den 20-01-2023 kl. 06:22 skrev Vaheed Ghaffari:
> Hello,
> I need some verification from the pros out there. I am trying to 
> stitch together a set of images taken by the DJI drone camera (M300) 
> and add geo coordination.
> Raw images are not geo coordinated, but I can access the photo 
> information in XMP fields, including the coordinates of the image 
> center (principal point). I am trying to use the GDAL C# Nuget Package.
>
> Here are the steps I am taking:
> 1- Calculate geotransform array 6 coefficients using the principal 
> point coordinates, calculated GSD and camera pitch/yaw/roll for each image
> 2- Use setgeotransform assign the array to the images
> 3-Use GdalWarp try to stitch the geocoordinated images together.
>
> I am not getting any good results. the output of the Warp function is 
> always a modified version of my last image in the dataset. I tried 
> using a basic geotranform array (without roll or coordination move) 
> for testing and got the same/similar results.
>
> I can provide the detailed code if required, but I have a feeling that 
> I am missing steps.
> I appreciate the help,
>
> -Vaheed
>
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