Anyone able to say why they gave me an unhelpful when I was just trying to be helpful. I would hope that the IPVM team sees it as me just trying to help them maintain their high standards and not as me poking fun at them or trying to be difficult. If you can enlighten me on a better option for notifying them of something like this or simply share why you chose to vote unhelpful it would be appreciated.
Thanks, there was no worry I only think I have paid for 1 renew in the last few years I was more just curious as to how I could improve my communication skills in the future or approach the suggestion of change better in the future. Don't usually see a lot of frowns, thumbs down yes, so was curious as to why. Thank you again.
Were there any temporary plates seen in testing, and how did the system do on those? Our experience in our market (TX) is that the vehicles we are asked to track the most have temporary plates. And since temp plates are paper and not reflective to IR, the same settings that read metal plates at night fail to read paper plates, and vice versa.
Thank you for the detail. Your experience is what I would have guessed. We also see a lot of older vehicles with fake (home-printed), damaged/faded paper tags, and paper tags placed in plastic bags. The plastic bags (to keep them dry in the rain) are the worst, as the light will reflect off creases in the bag, making both day and night plates difficult.
Wow, that's nuts! In terms of the plastics bags, I'm assuming they are the clear sandwich-esque baggies and not the grocery store plastic bag variety, because if that's the case, I don't know what LPR system would see those.
The car dealerships will put the plates in these plastic sheaths that inevitably get crinkled or creased over time. And individuals making up their own plates (you can find a template for anything on the internet) will put them in Ziplocks or something similar. Now imagine either bright sun on the plastic, or it's night. People usually don't commit BMV's or robberies using their valid plate. Our hot list is mostly paper plates, as they will (fortunately) often re-use a paper plate in multiple crimes.
IPVM - well done as always. However, I did have a question about whether you did any testing with those smoke-colored plastic plate covers that are appearing more frequently. It looks like the plate shot above for "Flock Missing Vehicle Make Frequent Occurrence" has a clear plastic cover. I ask because we had an HOA that was telling us that they had been testing our installation of a DW tag camera for their neighborhood and we were consistently missing one of their resident's plate on his vehicle. After extensive testing, it turns out, this was a fairly new vehicle with a smoke-colored cover and the camera just wouldn't see through it at night. Once I looked it up, I also found that in GA, that sort of plate cover is illegal but I'm starting to see them so frequently now. If you get the chance, I'd be interested to hear how the Flock cameras perform with that sort of cover and are they able to discern the plate correctly.
Just as an FYI, the Georgia code reads:
No license plate shall be covered with any material unless the material is colorless and transparent. No apparatus that obstructs or hinders the clear display and legibility of a license plate shall be attached to the rear of any motor vehicle required to be registered in the state.
I'll leave it to Derek to answer specifics on testing, but I only recently found out they're illegal in NY, as well, even clear ones. I put a clear one on my wife's car to try and keep some stuff off of it and she got pulled over and told to take it off.
That is the funny thing with ALPR is that it is so easy to defeat. In the wintertime, there are lot more missed plates just from road dirt. Add some extra IR LEDs to the plate frame is another solution. Plate covers are another but they can be illegal.
Flock: The system is specifically designed and engineered to capture rear plates of vehicles, which is consistent across states. They will capture front plates but are not designed to capture at the same rate/accuracy.
IPVM: Our testing reflects Flock's response, with extremely poor accuracy on front plates, even when clearly visible during the day.
I read the first part of Flock's comment as 'every state has a back plate, but not all states have front plates, so we designed it to read back plates. Which makes complete sense.
What doesn't make sense to me is why, based on IPVM testing, does Flock perform so badly (comparatively) in reading front plates - if both front and back plates are identical?
We are looking at bid where the basis of design appears to be Flock Safety and exploring other solutions such as AutoVu. & Vigilant Does anybody know if there is surcharge pricing for solar applications or have any solar reliability metrics?
The solar company I reached out to said that a 30W continues operational solution would be in the neighborhood of $4500.
Any feedback or advise would be greatly appreciated.
LTE communications were used, not WiFi. Matter of fact, there is no WiFi connectivity with the Flock Safety device. Where did you read/see/hear that?
With regards to camera cache/direct upload, the camera uploads images immediately, so long as there is a connection. If the connection is disrupted/dropped, Flock said:
The amount of days of storage depends on how busy the road the camera is on is. On a neighborhood road it can be up to 14 days vs. 3-4 days for a busy surface road. The cameras will start to delete older data first and continue to capture new data.
By the looks of this device, it appears that the Flock camera is just a single 5MP sensor which provides both plate capture and context. Is this correct?
If so, the LPR analytics are done at the server ("cloud")?
A comment about this test: It's one thing to verify how accurate the plates are read, it's another to see how many plates it never captured at all. This was tested over a period of two weeks, was there any analysis to see what it missed? This test seemed a little soft compared to other LPR tests we've seen here.
I have deployed various software LPR systems, and I've never found one that I would consider reliable for law enforcement. I suppose the nice thing about LPR, to Flocks advantage is, when you miss plates, no one is the wiser.
Yes, the camera uses one sensor for overview and capture. Flock doesn't disclose exactly where all analytics are performed but mentioned in past discussions with them that LPR runs on the camera. If I had to guess [my opinion only], I would say that the camera is capturing metadata and sending it to the cloud for full processing. That's how a lot of metadata analytics function, e.g., Avigilon's H5A cameras capture metadata, but Appearance Search requires a server with a GPU for processing.
We didn't analyze for a full two weeks to see if it missed any vehicles, but we did look through a day's worth of video. We have cameras mounted out front recorded elsewhere and we verified that in a day it did not miss any vehicles passing.
Now, some caveats: First, our street is not extremely high traffic. I'd have to go back and look to see how many vehicles passed. It was probably 200+, but not anywhere near what a busy intersection might see. Second, speeds are relatively low. It's a 25mph speed limit zone, so speeds are generally +/- 10mph of that. Again, busier roads are likely to see faster speeds. Both of those issues are likely to increase chances of misses, but we did not see any.