EmpireTech aka Dahua LPR Settings

[bigredfish]

You don’t.

Set focus, leave live page, go back to focus menu and hit save a couple times.

On live page it will always default to 20. Just make sure and change to 1 before making adjustments

 

[joogle]

Got it - thanks. Right now I have a car out there and am trying to adjust Day setting to be as sharp as possible. I dropped the sharpness which really made things a bit clear, is that normal that a lower sharpness will lead it to be clearer. Am attaching picture of current Day setting. Also, I set the focus to 1 as you suggested.

 

[wittaj]

How do I save the focus speed? If I set it and exit out of the Live Camera view it resets each time I go back to 20.

You can't, it always reverts to 20.

That is only used for how fast YOU manually adjust things.

 

[bigredfish]

Got it - thanks. Right now I have a car out there and am trying to adjust Day setting to be as sharp as possible. I dropped the sharpness which really made things a bit clear, is that normal that a lower sharpness will lead it to be clearer. Am attaching picture of current Day setting. Also, I set the focus to 1 as you suggested.

Yeah it’s a bit different with plates. Too much sharpness usually makes for problems on most scenes anyway.

You need more zoom or you’ll be wearing thick glasses like me before long

 

[joogle]

alright hard lesson learned did something on Day where now can't even read the license plate - ugh - completely get the frustration.

need to start all over again to figure out what happened - the illuminator on the Day - should that still be zoom Priority?

 

[bigredfish]

Illuminator is for the IR, no good in Daytime. Useless. Off

Nighttime use Manual and 100

 

[joogle]

Thanks so I'm not sure what ended up happening to my Day view frankly, i went from experimenting with the sharpness to readjusting zoom/focus. I guess I should have written down my existing numbers on the zoom/focus before messing with it - now it's very grainy and pixelated.

I've reverted back to the same settings you had including setting it to H264, the only difference being my FPS can't be switched to 30, it maxes at 25. Also my substream resolution option wasn't the same so picked the closest.

Now, testing night vision - i think it improved from last night possibly - attaching two videos - both cars did come in slowly - so will have to see when someone is at a faster speed.

I had to set the camera shutter to 1/2000 to avoid the flickering/waving light from the street lamp.

 

[bigredfish]

2nd ones close.

H.264H - details matter here

You need to zoom in more

 

[joogle]

2nd ones close.

H.264H - details matter here

You need to zoom in more

Thanks - yeah it was H.264H -- thanks for catching that.

Another car, this is the latest picture. Not zoomed in, not sure if i can improve this further or just be content this point with night and focus on the day tomorrow.

 

[bigredfish]

Other than not enough zoom it’s looking pretty close.

Tweek each of the 4 main controls I mentioned one at a time, test and see results. You’ll get it. Small changes.
Make screen grabs NOW of your current baseline settings.

You’re at the stage where bourbon helps and you’ll tweek it a dozen times in the next 3-4 weeks

 

[samplenhold]

Do realize:
1. You will probably have to do more fiddling with the settings after you get the proper mounting and more zoom.
2. You will NEVER be totally happy with every capture.
3. As cams age/get dirty, you will have to adjust again.
4. LPR cams keep you off the streets and out of the bars.

 

[joogle]

So I got a junction box to get more of an angle which worked but picture is quite pixelated for some reason - I've zoomed quite a bit and focused on the car shown. Now in night mode this car came in but nothing clear on LPR, wondering if i need to point camera down a bit more. Will have to see when other cars come in frame.

 

[bigredfish]

There's no IR on in that video. You're either in color, or the IR is off or some weird setting.
Make sure IR is Manual 100

 

[joogle]

Illuminator is set to manual with near/far set to 100.

I changed the shutter to be 1/1000 though there is still a street light capture as flicker, but there is a parked car im using as a reference by zooming in further with focus.

 

[bigredfish]

I dunno. Have to see in the daytime and see settings. Distance? There's a huge difference from the edge of the circle to that far car and it's plate isnt very well lit up

You're 2nd video in Post#167 and image in Post #169 were tons better. Something changed.

 

[joogle]

agreed - will have to check in daytime, frankly i noticed the earlier video / screen shots were better - the camera has been a bit weird - i did feel something may not be right with the camera but am trying all things from my end - because picture quality was much clearer before compared to now -- also this camera has a delay in connecting where as the other Dahua doesn't -- it's just been a bit odd

not sure if i need to get in touch for a swap/warranty replacement.

 

[bigredfish]

I doubt its a camera problem. Go see if you see the red LED's on from outside

 

[joogle]

I'm in a different location, will check tomorrow, but I changed it from Outdoor to some other setting, then 50hz, then 60ghz, as I saw flickering which i guess is street light.

Anyways i resaved it to Outdoor again and it set the shutter speed to 1/25 and this is how it looks, which seems better.

 

[bigredfish]

Yeah, No.
Any car moving is probably going to be blurry.

Go back and find the exposure settings I gave you that you had before.

 

[wittaj]

Do you want plates or overview?

Using antiflicker will result in never getting plates as it caps the shutter speed too slow.