Thermal Video - how what should I ?

BorisS

BorisS

Drone Enthusiast
Hi Guys,

I want a night vision solution just for the heck of it. I started checking out this second hand flir cams on ebay that are actually installed on mercedes and BMWs, since those seem right in size and cheaper than other solutions offered by the usual suspects. Does one of you have any experience or infos/ sources on these ?

Thanks

Boris
 
Last edited by a moderator:

BorisS

BorisS

Drone Enthusiast
dammit its thermal :) alk from last night :)

i can fix that. bartman
 
Last edited by a moderator:

FerdinandK

FerdinandK

Member
You can go for infrared cams, or thermal cams (they are a lot more expensive). Typically all sensors are sensitive to IR-Light, but there is a filter on the lens (or in software to prevent that, the pics look then very purple). If you go for a flir (thermal) then I would go for a flir tau 320 or 640 with the wides possible lens (but they are not cheap). I have a flir tau 640, but not up and running on the copter (that is another story). But if I have it operational, you can come over and have a look.

best regards

Ferdinand
 

BorisS

BorisS

Drone Enthusiast
Why dont you have the 640 up and running on the copter, other story as in no time etc. or are there technical issues to get it running on a copter ?

Thanks
 



FerdinandK

FerdinandK

Member
The difficult part is, to get that cam from the US to AUT. But the cam looks nice for the price.

best regards

Ferdinand
 


BorisS

BorisS

Drone Enthusiast
I would be down i just cant tell how good it is when its pitch black outside ? Ifra is not going to reach thermal or ? Or good enough i know to little about it !

Boris
 


ChrisViperM

ChrisViperM

Active Member
Now you hooked me.....

Since it is a interesting topic, I did a bit of research and found out that in general the Thermal Camera is in fact a infrared camera which transfers the image somehow into a "colorful" image....Infrared alone is just a lot of different grey shades for the camera.

Here it is explaind in "no-nerd" language: (sorry, only in German)
http://www.flir.com/cs/emea/de/view/?id=41523

Also check the rest of that web-page....AFAIK they are market leader in that field.

Here is some tech background and links:

http://en.wikipedia.org/wiki/Infrared_photography
http://en.wikipedia.org/wiki/Thermographic_camera
http://www.infraredcamerasinc.com/
http://www.lifepixel.com/tutorials/infrared-diy-tutorials
http://www.ebay.de/sch/i.html?_trksid=p5197.m570.l1313&_nkw=flir&_sacat=0&_from=R40

Now back to work....


Chris
 


O

otlski

New Member
Hi All,

There seems to be some confusion here. First, A "thermal" camera is absolutely an infrared camera; specifically it can see in the medium or longwave IR. These thermal IR cameras use microbolometer sensor arrays which are not silicon CCD or CMOS sensors. The statement that most CCD sensors are sensitive to IR is somewhat true. It is true in that it can see in what is called the near infrared (NIR). This is the spectrum immediately adjacent to the red color in the visible spectrum, it is not "heat" sensing. NIR is useful for vegetation studies. For clarity of nomenclature I would always call a thermal camera an infrared camera and would never call a modified CCD or CMOS camera an infrared camera. Instead, I would call them NIR cameras because that is what they are. Second, the NIR cameras come with either monochrome or color CCD chips. The IR pass filter reduces the information to a grayscale looking image. Thermal IR cameras come with monochrome microbolometer chip sensors which produce an output voltage equivalent to "grayscale". The camera's on-board processing can let the user interpret the thermal information as monochrome or as several different color palettes. In other words, the thermal IR camera can look either color or B&W.

Dan
 
Last edited by a moderator:

ChrisViperM

ChrisViperM

Active Member
Another good info about infrared light: (watch the video)

[video]http://www.flir.com/cs/emea/en/view/?id=41536[/video]

Chris
 
Last edited by a moderator:

FerdinandK

FerdinandK

Member
Here a (really bad) video from the flytron-camera mentioned some posts ago. I am still messing around with the autofocus, but for the moment all I was trying was, if the stabilization (of a BL-gimal) is good enough for a zoom camera. This is a life recording on the ground (really bad quality especially from the fpv-cam which is not captured correctly).

best regards

Ferdinand
 
Last edited by a moderator:

You must log in or register to reply here.
Top