Time dependent zones

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MatzR
Posts: 3
Joined: Wed Oct 02, 2019 8:02 am

Time dependent zones

Post by MatzR » Wed Oct 02, 2019 8:07 am

Hi,

I'm using ZM for a while now and am quite happy with it.
There is only one issue I can't get around: I have one cam at the front of my house which covers the area there with 2 zones. This works quite well during the day, but at night the lights of bypassing cars always trigger alarms - and far too many...
I tried numerous things but without success, so I came up with the following idea: if it were possible to define zones for a specific time of the day I could split the 2 zones into four - 2 sensitive ones directly in front of the house, and 2 more closer to the street side which are only active during the day (i.e. when it is light).
But for this I have to be able to set a time frame when a zone is active and when not.
Just an idea.

Regards
Matthias

NB: if you have any other suggestions I would of course be glad to read...

CountyLine
Posts: 27
Joined: Thu Aug 29, 2019 5:22 pm
Location: USA

Re: Time dependent zones

Post by CountyLine » Wed Oct 02, 2019 2:56 pm

Did you try one or more Preclusive zones located where the vehicles lights would illuminate them, but not where interesting movement would trigger them? They can be really small, so don't take much in the way of resources.

montagdude
Posts: 61
Joined: Fri Nov 10, 2017 6:05 pm

Re: Time dependent zones

Post by montagdude » Wed Oct 02, 2019 3:26 pm

The way I have solved this problem is to make duplicated monitors with the same zones, but different settings on the zones. I switch the active monitors based on sunrise and sunset using sunwait (https://sourceforge.net/projects/sunwait4windows/). It's kind of a pain to set it up this way, but once set up it works well. It would be easier to set up if there were a monitor cloning feature that also cloned the zones.

MatzR
Posts: 3
Joined: Wed Oct 02, 2019 8:02 am

Re: Time dependent zones

Post by MatzR » Fri Oct 04, 2019 3:58 pm

CountyLine wrote:
Wed Oct 02, 2019 2:56 pm
Did you try one or more Preclusive zones located where the vehicles lights would illuminate them, but not where interesting movement would trigger them? They can be really small, so don't take much in the way of resources.
I am playing around with Preclusive zones but not really getting useful results.
Any recommendations which settings best to use?

Thanks
Matthias

MatzR
Posts: 3
Joined: Wed Oct 02, 2019 8:02 am

Re: Time dependent zones

Post by MatzR » Fri Oct 04, 2019 3:59 pm

montagdude wrote:
Wed Oct 02, 2019 3:26 pm
The way I have solved this problem is to make duplicated monitors with the same zones, but different settings on the zones. I switch the active monitors based on sunrise and sunset using sunwait (https://sourceforge.net/projects/sunwait4windows/). It's kind of a pain to set it up this way, but once set up it works well. It would be easier to set up if there were a monitor cloning feature that also cloned the zones.
Interesting approach. I would have the sunset and sunrise times anyway from my weather station.
But how do you use the signal to switch the monitors on/off?

Thanks
Matthias

CountyLine
Posts: 27
Joined: Thu Aug 29, 2019 5:22 pm
Location: USA

Re: Time dependent zones

Post by CountyLine » Fri Oct 04, 2019 8:16 pm

MatzR wrote:
Fri Oct 04, 2019 3:58 pm

I am playing around with Preclusive zones but not really getting useful results.
Any recommendations which settings best to use?
My main use for them is suppressing events that occur due to the cameras changing over from daylight to night mode (IR) and vice-versa.

Small Preclusive zones are recommended by the developers. I have tried both 10x10 and 20x20 pixel square zones. I find the 20x20 works somewhat better than the 10x10. You can have multiple preclusive zones. I suspect that will be required in your use case.

I usually locate the preclusive zone up at the top of the frame on some dark object that I don't care about. I often put it on a tree. I usually have to play with the settings a bit to get it to work reliably.

One 10x10 example follows,

Type: Preclusive

Units: Pixels

Alarm Check Method: AlarmedPixels

Min/Max Pixel Threshold: 50, 0

Min/Max Alarmed Area: 10, 0

Overload Frame Ignore Count: 0

Extend Alarm Frame Count: 3

Anything else is blank or 0.

Expect to find out that you will have to play with these settings quite a bit in order to get a feel for this stuff. Every use case is different and some can be quite complicated.

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