How to define a zone with a metal fence

simonm · Post by **simonm** » Thu Jun 29, 2006 3:52 pm

Hello,
i am observing the parking area of our corporate building. Please think of a cam behind a window in the 1st floor looking out on a area for about 6 meters , and then comes a metal fence. (strong iron fence). Behind this fence is a street.

And now the problem

The direction my cam is looking to is directly to the street. To avoid alerts when people / cars are moving by, i defined only the ground as a active zone. But that means that only the legs of persons will create an alert in the active zone. That in conlusion would mean that I have to decrease the amount of % pixels which can cause an alert (only legs mean less pixel than the complete body of a person).

I hope i have explained my problem correctly....
I would expanse my active zone to the total height of persons - but, what about the movements behind the fence...?

Thanks,
Simon

jameswilson · Post by **jameswilson** » Thu Jun 29, 2006 5:05 pm

I cant see how you can do this as its not a '3d' cam but i would experiment with multiple zones with varieing sensitivty in stips. Buts its gonna take some setting up

simonm · Post by **simonm** » Fri Jun 30, 2006 12:30 am

Hi James,
thanks for your answer, it shows me at least that i didnt make anything wrong in general.

Ok, i will try with different zones.
Bye!
Simon

Post by **cordel** » Fri Jun 30, 2006 1:53 am

You can try setting up a Preclusive zone over the traffic area but, you might miss a real event. I haven't had a use for this zone type as of yet so I'm not completely sure of it's behavior but might be worth a try.

Regards,
Corey