FLIR Lepton Framerates - Best Version?

General discussion about topics related to OpenMV.
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CRMANN
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FLIR Lepton Framerates - Best Version?

Postby CRMANN » Wed Aug 12, 2020 3:36 pm

I'd like to start experimenting with the Lepton + OpenMV, however after watching your video testing the various models, I want to check my understanding of the various performance differences.

My takeaway is that the only Lepton that could provide an uninterrupted/near 30fps framerate is the 1.x variants, anything 2.x or 3.x has much slower rates and "freezes" due to FFC. Is this a correct assessment?
XIPHOEON LLC
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kwagyeman
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Re: FLIR Lepton Framerates - Best Version?

Postby kwagyeman » Wed Aug 12, 2020 4:05 pm

It outputs 9 fps per ITAR restrictions because you could build a heat seeking missile with it. All do 9 fps of actual data. The FLIR lepton 1 just outputs the same frame about 3x times that makes the fps appear higher.
Nyamekye,
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CRMANN
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Re: FLIR Lepton Framerates - Best Version?

Postby CRMANN » Wed Aug 12, 2020 4:59 pm

I was suspecting it was indeed and ITAR thing. Was I also correct about the constant flat field correction? Can that be avoided if I am not interested in temp measurment, and only interested in the thermal "scene"?
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kwagyeman
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Re: FLIR Lepton Framerates - Best Version?

Postby kwagyeman » Wed Aug 12, 2020 5:31 pm

No, it's necessary because the sensor drifts. So, it has to run as the sensor temp changes. It runs more often on power on.
Nyamekye,
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CRMANN
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Re: FLIR Lepton Framerates - Best Version?

Postby CRMANN » Thu Aug 13, 2020 2:09 am

I appreciate the insight, should make picking the right lepton a bit easier!
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