Hi Everyone,
I just wanted to share my latest 5 camera / 2 pole LPR install that has been online a few weeks. It covers a busy intersection known as 5 corners in our area, intersection of three major roads. Overall, we achieved about 50% more lane coverage than planned. I'll explain each below. All LPR cameras are @EMPIRETECANDY Dahua's 7442-Z4.- The 32mm is sufficient in most cases, and the 1/1.8 sensor is outstanding. Night capture is outstanding on these as well. The only camera I wish I had slightly more zoom is on pole 1, the one facing left, however the cars have to travel through the intersection, so its not a major issue.
Here is the overview of the placement, please excuse the approximate arrows.
Pole 1, Camera facing right and up
Our original target was just the two left lanes. We get those near perfect day and night. The far two lanes ended up being a bonus. We get 90%+ in the far lanes during the day, and 80% or so at night. I have plenty of zoom left here to play with.
Pole 1, Camera facing left
Original target was the right lane. Other two ended up being a bonus. Most traffic has to pass closer to the camera to get through the intersection, however we still catch the cars facing the camera before they come into the intersection. The far left lane, with the cars making a hard right does miss a small percentage. This is the only camera I wish I had a tiny bit more zoom.
Pole 1, facing right
Original target was the left two lanes since they had to come into the intersection and get closer to the camera. We also easily get the far lane going the opposite way nearly perfect as well.
Pole 2, camera facing directly up
Original plan for this was the two right lanes, and the second camera on this pole would catch the left lane and the opposite direction lane. However, one camera easily catches all three.
Pole 2, Camera facing down and left
This camera easily catches the far lane.
Summary
All in all, we caught a ton more lanes than we had expected with a 2 pole install, and some limited angles based on existing utility poles. OpenALPR is absolutely outstanding in its recognition. We also have an Axis 4 head 360 degree camera on each pole for general traffic overview. Biggest pain was the NYS DOT right of way permits, and getting the utility company to hook up the power on the pole. The computer on pole 2 had hardware issues after a few days on the pole, so I had to swap that out as well, but all in all, went very smooth. I worked with an experienced electrician which makes my job MUCH easier. On to the next ones!
I just wanted to share my latest 5 camera / 2 pole LPR install that has been online a few weeks. It covers a busy intersection known as 5 corners in our area, intersection of three major roads. Overall, we achieved about 50% more lane coverage than planned. I'll explain each below. All LPR cameras are @EMPIRETECANDY Dahua's 7442-Z4.- The 32mm is sufficient in most cases, and the 1/1.8 sensor is outstanding. Night capture is outstanding on these as well. The only camera I wish I had slightly more zoom is on pole 1, the one facing left, however the cars have to travel through the intersection, so its not a major issue.
Here is the overview of the placement, please excuse the approximate arrows.
Pole 1, Camera facing right and up
Our original target was just the two left lanes. We get those near perfect day and night. The far two lanes ended up being a bonus. We get 90%+ in the far lanes during the day, and 80% or so at night. I have plenty of zoom left here to play with.
Pole 1, Camera facing left
Original target was the right lane. Other two ended up being a bonus. Most traffic has to pass closer to the camera to get through the intersection, however we still catch the cars facing the camera before they come into the intersection. The far left lane, with the cars making a hard right does miss a small percentage. This is the only camera I wish I had a tiny bit more zoom.
Pole 1, facing right
Original target was the left two lanes since they had to come into the intersection and get closer to the camera. We also easily get the far lane going the opposite way nearly perfect as well.
Pole 2, camera facing directly up
Original plan for this was the two right lanes, and the second camera on this pole would catch the left lane and the opposite direction lane. However, one camera easily catches all three.
Pole 2, Camera facing down and left
This camera easily catches the far lane.
Summary
All in all, we caught a ton more lanes than we had expected with a 2 pole install, and some limited angles based on existing utility poles. OpenALPR is absolutely outstanding in its recognition. We also have an Axis 4 head 360 degree camera on each pole for general traffic overview. Biggest pain was the NYS DOT right of way permits, and getting the utility company to hook up the power on the pole. The computer on pole 2 had hardware issues after a few days on the pole, so I had to swap that out as well, but all in all, went very smooth. I worked with an experienced electrician which makes my job MUCH easier. On to the next ones!
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