Orthophoto for landmine detection
I want to use Dronelink to create an orthophoto to find PFM-1 butterfly mines. The software of https://www.de-mine.com should automatically detect the mines.
What would be the best settings to fly a mapping mission?
Can I shoot RAW?
Can the drone hoover while taking the photo to reduce motion blur?
I have an Dronelink Elite account and a DJI Phantom 4
My account https://app.dronelink.com/aerialsurvey
If this succeeds I want to use this technology in Ukraine.
Comments
44 comments
First time flying with Dronelink Inspection. It seems to do the trick.
I dont know if the photos can be sharper than this.
https://we.tl/t-QoPi6BdXIG
https://youtu.be/VcBQf3j1BTE
Shutter was still at a very slow 1/30
Much better.
I'd still try to speed up the shutter to at least 1/60. You can manually set everything - you can do it from within Dronelink if you like - check out my video on the new UI which should cover how to get to that section.
https://youtu.be/KtmKGix60eI
Another option is to put it in auto (maybe force ISO to 100 or 200) and change the photo type to AEB. That way it will capture multiple shots of each at different exposures and one of them is probably going to be much better than the others.
I'am starting similar type project (field trash detection). Are there ai object detection programs available which can read pictures?
Seppo Maybe this research is of interest to you https://www.mdpi.com/journal/remotesensing/special_issues/V6D07666X5
Is 10 meters the recommendation for the P4P specifically? Does it take into account the 20mp camera vs the more common 12mp?
10 meters was recommended by de-mine.com.
I don't know about specific drones and their optimum altitude.
I believe I finally managed to produce decent images
Setting and flight: https://youtu.be/5t3YC_TxF8c
I also create the Orthophoto using WebODM
Orthophoto: https://youtu.be/LW8DmbJoQmM
Orthophoto as file and a couple of photos: https://we.tl/t-1dqwQxXRvY
Behind the scenes: https://youtu.be/uh5xHqnn73o
Next step should be to fly again, but with the 3D printed mines in the field.
That's looking good, looking forward to seeing it with the dummy mines in the field
Good job! How much overlap in photos?
That's great news! Very interested to see how this all works with the AI - would be great to see you helping people avoid injury.
The front and side overlap is 70%.
To reduce on orthophoto creation time I want to experiment lowering the overlap.
My new PC:
Needs almost 2 hours to process the 140 photos. To process 20% of the landmass of Ukraine it would take 5 trillion hours
What settings are you using in WebODM, I've just processed this, this morning 174 photos using default setting on this laptop, in just under 39 minutes:
Windows 11 Laptop
Cosmos Series: 15.6" Matte Full HD, i7 Six Core Processor 10750H (2.6GHz, 5GHz Turbo),16GB Corsair 2666MHz, GTX 1650 Ti
WebODM settings: auto-boundary:true, dem-resolution:0.3, dsm:true, orthophoto-resolution:0.3, pc-quality:high
I believe for AI mine detection the DPI of the orthophoto should be similar to the DPI of the individual photos. de-mine.com told me the quality of the orthophoto is just what they need.
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