"Friends" some great attitude in here….. I will try to keep up the momentum...
Nice try, but no balloons……
This is clearly a result of a camera with “limited” lowlight capabilities using severe gain to give a usable picture and with all the artifacts a high temporal noise suppression/filtering will give you trying to remove the noise. This can be OK for verification/detection usage of the video but not for identification
This temporal/inter frame noise suppression will give more and more of these “ghosting’s” the worse the initial signal is. It is in the nature of the technology. If possible try to turn off the DNR completely and you will see none of this ghosting but instead massive noise (plague or cholera….)
I have “limited” experience with this specific camera model but a lot of trial and errors with MANY other ones…..
Exactly the same issues as in these pictures
These DNR settings (temporal) can be tuned against and together with spatial noise reduction (intra frame) that gives some “de focus” but less motion blur like the temporal ones. Sometimes this also referred to 2D noise reduction. If it is possible to turn them (temporal and spatial (inter frame, intra frame)) on and off and also change their individual settings you can often get a good result.
But if you are using a camera that don’t have the foundations for producing the picture from the beginning you are in a dead end.
Some manufacturer’s also do interesting stuff with the sensor and it’s pixels like binning to increase sensitivity. This can be a result when going from 1.3 to 3MP, increasing pixels=decreasing sensitivity=more gain=more noise=more temporal suppression=more ghosting.
Also some WDR “magic” can cause these kind of issues, especially when using different simultaneously shutter speeds in lowlight. Therefore many cameras turn off WDR in lowlight situations.
dual shutter speed WDR camera in lowlight with high temporal noise filtering can be scary......
Using a slower shutter can actually make this better since you increase sensitivity. Slow shutter blur is sometimes better (less destroying) than DNR blur, still not what I assume you prefer.
- Turn off DNR (if possible...)
- Turn off WDR
- Try 1/15 instead of 1/30 shutter speed to see if it looks better, not sure it will improve but worth a try if nothing else helps
- Go back to 1.3 MP
- Put up an IR illuminator
Still all compromises to fix the initial issue. Also correlating to earlier tests of resolution/picture quality, higher pixel count doesn’t always mean better result.
Btw, this have probably nothing to do with loosing frames (regardless of which one’s) or package disorder in the network, neither GPU rendering, that looks completely different from this noise reduction “inter frame ghosting” that we see here.
So, I hope I pointed this out as bluntly and ignorant as it was planned in a sarcastic way :) or?