EEVblog Electronics Community Forum
Products => Thermal Imaging => Topic started by: Bruno28 on January 01, 2019, 10:51:57 am
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Look what I get to play with this week. Just a loan from the business. We are demoing this to Fire Fighters in Australia.
I did a quick test and it's quite cool. 640x512 resolution at 30hz with a 19mm lens. It will be even better when flying.
Just wanted to share something different in the thermal camera world.
(https://uploads.tapatalk-cdn.com/20190101/9f7099e8863631fc706662bdb962da2f.jpg)(https://uploads.tapatalk-cdn.com/20190101/3fc7784895e8cffd5faf4b013a55fab7.jpg)(https://uploads.tapatalk-cdn.com/20190101/0ea9d1321250cee51745eaf0afcf57e9.jpg)(https://uploads.tapatalk-cdn.com/20190101/98e960e123a9e3d26509c33c27f06cbc.jpg)(https://uploads.tapatalk-cdn.com/20190101/7fcab0abfb2ce5f23901bab927fe0a64.jpg)
Sent from my SM-G960F using Tapatalk
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Nice, post some more if you get some airborne shots.
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Depending on what kind of shots you want I can oblige :-+
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Anything! Especially stuff that shows off the higher resolution.
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I removed some of the identifying EXIF data for obvious reasons but beyond that I tried to keep them as original as possible so you can mess around with the data.
https://www.dropbox.com/s/2t2zf54zu8ld06y/Thermal%20imagery.7z?dl=0 (https://www.dropbox.com/s/2t2zf54zu8ld06y/Thermal%20imagery.7z?dl=0)
Enjoy!
P.S. anyone who wants to work on methods of manipulating this data in batch let me know. FLIR Tools has some absurd product limitations
Edit: I left out some information, the camera is a DJI Zenmuse XT (Tau 2 core?) with the 640x512 resolution, 13mm lens, and radiometric options. Camera cost is around ~10k USD.
Oh, there's a dead pixel that's being looked at right now in the pictures. We're annoyed it failed after less than a year of use, and of course the warranty is 6 months. Hoping the fix isn't too expensive..
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for batch processing you may want to look into the various exiftool works by tomas123
found in one of the E4 threads. here: https://www.eevblog.com/forum/thermal-imaging/flir-e4-thermal-imaging-camera-teardown/msg342072/#msg342072 (https://www.eevblog.com/forum/thermal-imaging/flir-e4-thermal-imaging-camera-teardown/msg342072/#msg342072)
E: added link
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Ah yes I remember that tool, very cool. I need to look further into using it for the method I mentioned. I'm unsure of what FLIR tools does to auto adjust the picture but it works well. The color distribution options are also nice (linear, signal, histogram equalization).
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Hice setup! But be carrefull with this uav
it's a great drone especially with new remote it has a strange power problem, you can find various crash reports online.
Our brand-new matrice 210 overheated on flight and crashed to the ground while flying 150m AGL
the drone and the $ 55,000 device it carried(geophysical stuff) was completely destroyed.
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Regarding a dead pixel -- the pixel at X=531, Y=287 seems not to be working on the images I looked at. I come up with a nan (not a number) for the temperature at that pixel. Also, there doesn't seem to be a palette in these image files.
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The XT2 has to be one of the worst put together cameras going. DJI took the approach of building their own thermal imaging payload based on the Tau2 - they didn't use any of FLIR's SDK. Consequently, every 1 out of 2 XT2s 640x512 with 13mm lens are poorly calibrated and have crazy temperature differences of ~10 degrees from the centre to the edge. It takes DJI over 4 months to get it solved EVERY TIME.
That said, when they work, they can be very effective.