Wednesday, January 29, 2020

Eval:Plate Recognizer in Blue Iris 5

Note I and many others have been seeing the web server crash a lot with Blue Iris 5 Going to be waiting to upgrade any more servers till that gets sorts. But till then I though I'd look at the new AI built-ins.

Setup instructions.

First look:

Given I'm just looking to log cars coming in my gate I figured their free tier might be enough. Gets a bit pricey for watching a neighborhood gate or parking lot.

Note the timestamps on the cam pics are UTC like the plate log.

The first thing that hit me was I need to dial my triggers way back so it will only be sending things that are probably cars to stay in the free range. Even though I thought I'd dialed it back pretty good I had 41 alerts in the first 2 1/2 hours I had it turned on. It did get the plate on my while I was pulling out with the trash but not when I pushed it back up the driveway.

First uploaded pic of me on the way out
Last uploaded pic of me with the cart


It did not get the one off a truck that pulled in to turn around after dark either. Though in that case it probably could not have been able to make out the plate since I could not. Should have uploaded a pic though. It think because it did not quite cross zones.
I think the dividing line was just this side of the tires.


So I adjusted the zones again (replaced right 1/3 of 2 full width zones with a third to trigger on people using the turnaround like the truck)  and turned it off for the night.
now with 3 zones. 2 on left 1 on right.
I might want to swap to the gate cam instead as it could see the plate on the truck well from its angle and distance. Though that also means it will be tough not to trip with passing traffic. Especially at night with headlights shining off the gate and trees.

Update 2/4/2020:

Totally missed a neighbor's visit both coming and going in the middle of the day. Plus even weirder it thinks it made out the cameras name as a plate on my work glove as I passed. Again times are UTC where local is UTC-6
Notice no car pics for 2/3 though it did see me.
Me carrying a chainsaw. I guess my movement triggered the LPR and the only text it found was the cameras name overlay.
The neighbor did trigger the BI motion detection 6 times. You can see the first image here along with the 6 clip blank clip icons o the left. (The blank icons is another random issue I've been seeing in BI5.)
Note I pixelated the plate here. It was perfectly clear.
It got me thinking the one trigger point might not be enough so I reduced the 3 zones I have and added 3 more to hopefully trigger earlier and more often in case they are getting dropped or something. Unfortunately all the zones you are not currently editing show up as the same color so they look like one but there are 6, A thru F.
Basically 4 strip zones to catch "vertical" movement and 2 block sections on right to catch going into turn around or on up drive.
With the crossings set up like this. (Note F was added between the road and A which starts at the gate.)


I also cranked the sensitivity a bit from min object size of 675 to 525 which should be about the size of a car at the gate.

One think I did not mention earlier is there is also a motion detector at the gate that triggers the driveway cams as well. It is a bit laggy but unaffected by the headlights going by. So at night I only use that to trigger the LPR by setting a separate profile and scheduling the switch.
Note no motion sensing selected but the LPR AI is configured for this profile as well.
Note the relative to sunrise/sunset option and you can click on "Days" button to select a group of days or a single day.

Update 2/7/2020:

Another gotcha. Not sure how but it appears my LPR config disappeared from both profiles. It posted a pic at 7:28 AM UTC (1:28 AM local the schedule is using) but when I looked to see how it did with today's FedEx delivery there was nothing. And when I checked my settings in BI5 I found the LPR disabled with no config info. The global profile override schedule was still in place. I then noticed the profile number was not in place on the frame as it had been when the schedule was working. Trying to go into the cameras motion detection config seemed to make the app unresponsive till I tried to close the app at which time the motion detection config dialog appeared.
Note blank clips and motion detection preview window
Restarting the console told me an update was ready so I let that install. After the profile indicator was back on the camera frame. The LPR config was still there. Makes me think a subsystem died or such. Note the clip images were still black so I did a DB repair which sorted that. However I found the active part of zone F was inverted. I'll have to keep a closer eye on this and see if there is some more monitoring I can setup.

More later.

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