How do I fix this?

Discussions related to the 1.36.x series of ZoneMinder
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random_string
Posts: 8
Joined: Mon Dec 19, 2022 7:01 pm

How do I fix this?

Post by random_string »

I'm having a problem with false alarms. I think it is caused by slight changes in light, which cause the camera to adjust something. It always causes false positives. Is there a setting in the camera I need to adjust? My camera is the Amcrest 5MP PoE Bullet Security Camera IP5M-B1186EW-28MM.
Here is a link to a 3 second video showing the effect:
https://drive.google.com/file/d/1nupvDh ... sp=sharing

Thank you.
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Andyrh
Posts: 280
Joined: Sat Oct 28, 2017 3:55 am

Re: How do I fix this?

Post by Andyrh »

First step is to adjust the Min/Max Alarmed Area. Set the max to something less than the full size. This helps when the entire picture changes, such as a cloud.
Second try adjusting Min/Max Pixel Threshold (0-255). Set the min above 0. This helps when a pixel changes shades, sometimes caused by camera noise.
Andy
o||||o

Ubuntu 22.04
ZM 1.36.33
E5-1650-v4 Xeon
16 GB RAM
6 cameras -> 54 FPS modect
random_string
Posts: 8
Joined: Mon Dec 19, 2022 7:01 pm

Re: How do I fix this?

Post by random_string »

Thanks. I made the suggested changes. I'll report back with my findings. I really appreciate your help!
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