LPR camera settings

[bickford]

Hello everyone

a question for LPR specialists

I have the new DAHUA HFW5231E-Z5
I use it for LPR ; in day mode no problems

but at night motion blurred ... can you help me a little please ?

picture below and settings :


BICK

 

[cb8]

Your street look very bright at night, or is it all from the IR lights?

When I tested my Z5, I had more success getting sharp images if I lowered the gain further. You can always open up the iris accordingly to compensate. I kept the iris at about 80-90 and it gave me enough DOF that getting the right focus was easy. I had the camera fully zoomed in, shutter speed at 1/1000th, which left everything but the license plate and lights totally dark.

 

[bickford]

hello and thanks for the help

Tried with 1/1000 iris 90 gain 0-40 and IR 50%...
waiting for cars

BICK

 

[nayr]

You need test plates, at that shutter speed blur wont be an issue.

 

[bickford]

Perhaps i have too much IR LIGHT ...

Yes test plate can be a good way ...

BICK

 

[cb8]

Do you have any IR sources besides the bullet? What about existing light such as street lights?

 

[bickford]

Yes i have other cameras but IR sources not in the same direction.
Yes there is street light

BICK

 

[Mike Mo]

Yes i have other cameras but IR sources not in the same direction.
Yes there is street light

BICK

Did you figure out the best settings?