Yeah, Rekognition is slick. And their AI/ML model will continue to improve over time, which should improve accuracy.FYI Plate Recognizer uses AWS Rekognition, so it is fairly accurate.
It has been two years since I made this post. I have learned a lot about LPR from my experience, other's postings and questions, and how my needs morphed over time.Thanks, Sebastian! I'll check it out
Like I say, I don't know that I need to read every single plate that passes, but I'd like to be able to when I need to lol
Cheers.The reason folks like a 4MP on a 1/1.8" sensor is to get good video in color at night. But for LPR you will not be using color at night, you will be in B&W using IR. This is to ensure that you can freeze motion well enough to read the plate by using a very fast shutter speed, like 1/2000. LPR is all about the snapshot and not the video. So it is most like sports photography than movie making.
Optical Zoom will be the key to your success.Cheers.
While I know that there's no one-size-fits-all solution, I do hope that, in addition to the clarity to be able to at least manually read plates when necessary, I can get decent low light definition rather than the blur I currently get!
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Compare that shot with these. The day is for you to see how zoomed in and the night is to see how well the plate can be seen.Cheers.
While I know that there's no one-size-fits-all solution, I do hope that, in addition to the clarity to be able to at least manually read plates when necessary, I can get decent low light definition rather than the blur I currently get!
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What utility are you mentioning here?The big key is to run daytime at 1/2000 shutter and then either force it to night settings B/W 45 minutes before sunset and 45 minutes after sunrise so that it has something to focus on, or use the utility posted on the forums that will set focus within the utility.
I ran mine 24/7 using the nighttime settings until I decided to give that utility a try, so now I run color in daytime with 1/2000 shutter
This oneWhat utility are you mentioning here?
With capturing plates, it is all about making the plate as large as possible, and that is simple physics and optics. Not many cameras have this amount of zoom.Helpful thread. Been using the 5241-z12 for a while trying to capture 2 lanes which poses challenges.
Curious,are their significantly better options out there for double or triple the price?
Or would some sort of long range IR device be better recommended?
Have been using 1/500 exposure and get captures like these (need to work on focus):
View attachment 151098View attachment 151099
Juar changed to 1/2000 and had a neighbour sit there for me to change settings. But struggling with many plates that are a bit dirty in terms of lighting them up with IR.
So was curious what other camera options are out there and or if external IR would be a better option?
In the meantime will keep tweaking when I get a chance!
Both Dahua and Hik make cams specifically for LPR, but they do not have the amount of optical zoom as our trusty 5241 Z12E cams.
How far away are these caps from? Can you zoom in more?
There will always be problem plates. Some you will just never be able to get. I have a few that come by that to get the full plate number, I have to step through frame-by-frame.
Distance is about 100-120 feet. Unfortunately, short of putting up a 3rd camera in the spot (one is general viewing, the other is dedicated LPR), stuck with trying to capture two lanes with the one camera so can't zoom in much more (I'm at 900 on the manual zoom).With capturing plates, it is all about making the plate as large as possible, and that is simple physics and optics. Not many cameras have this amount of zoom.
So for some field of views and angles, trying to get two lanes can be problematic.
The right kinds of external IR will help (focused versus wide IR).
But we have to recognize we won't get every plate. Some are dirty or rusty or temp tags, etc.
The product says "Pulsed mode allows syncing with a camera shutter for industrial, machine vision, and ANPR/LPR applications. " I wonder how that would work?
Lots of info on the manufacturer's website.The product says "Pulsed mode allows syncing with a camera shutter for industrial, machine vision, and ANPR/LPR applications. " I wonder how that would work?
Also, would this product allow for a local 120v power source?
Guess I'm still hoping for the white light strobe which is supposed to be invisible to the human eye.