Need help tweaking motion detection on a thermal camera in a tree...

[erkme73]

AI sucks on thermal video. I don't know how to train models, so I'm stuck using the standard motion detection as a trigger.

My camera is a tree (about 20' up), and as such, subject to swaying in the wind. Consequently, as it moves, the motion triggers with every gust of wind as the entire field changes.



I suspect it has something to do with this option:



But reading the instructions is clear as mud to me.



About the only thing that I get is that the lower value makes it more sensitive - and even that is a bit confusing. Does it make the reset more sensitive or the motion detection? I assume a lower value will mean it takes less (smaller) motion to reset the MD... but what's a good threshold for it to ignore swaying? I'm trying 30% but would rather not have to do trial an error on this camera for fear of missing opportunities to capture a hog/yote. Animals wouldn't take up more than 5% of the total screen...

 

[wittaj]

No, that setting is for something like a bug goes across the screen or headlight shine that takes over X% of the field of view. It "resets" the sensor so that you don't get an alert for what is likely a false trigger.

Your make time is pretty small and likely the problem.

How long would it take for something to come into the field of view and get halfway across - that is the time to think about. I bet you could change it to 1 second and likely still trigger for what you want, and eliminate the false you are getting.

 

[erkme73]

Interesting. Sometimes they move very slowly so I'd be concerned it won't pick up enough movement to trigger, but I will try that as well in a bit.

My thought with the reset is that when the image sways, I have easily 30% or more of the pixels changing (much like a bug/headlights) for which I don't want an alert. I've turned it on and set it to 30%, and so far no more alerts.... Of course it could be that the wind just stopped blowing (Murphy at work). I'll change one variable at a time to figure out which one is giving me my best resolution. Thanks for the suggestion...

 

[tigerwillow1]

You can use IVS with the thermal camera. It's "dumb" IVS, no human/vehicle filters.