Hi,
Is there a way to generate or export a specific region from my orthophoto? For instance, in the attached image, there are two distinct areas, and my goal is to “crop” them and export them to another orthophoto while preserving the georeferencing information.
In essence, what I’m looking to achieve is akin to taking a snapshot of these regions while maintaining their georeferenced data.
Thanks in advance !
I assume when you say export them to another orthophoto you mean an orthophoto of the same area only a different time?
you can crop an area from an orthophoto using QGIS. just create the polygon in qgis and use clip_by_mask layer referencing your ortho and the polygon of the area you want to crop.
As mentioned above with QGIS it’s (very) easy.
From WebODM download your orthophoto
From WebODM export your measurement as geojson
Import (drag) both files in QGIS
In QGIS choose Raster → Extraction → Clip Raster by Mask Layer
(make sure your measurement.json is the clip area)|
Run
Result is the clipped area
That’s a very fine explantion @Aeret.
Nailed it!
Hello everyone !
I tried the method you guys suggested, and it worked! However, the results didn’t meet my expectations due to the resolution.
In the meantime, I attempted to process only the images of the specific area I wanted in WebODM, and the results were acceptable. To achieve better results using this approach, I believe I need to fly at a lower altitude, preferably around 50 meters instead of 100.
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