These serve as a good daily operational check, but are generally not admissible in court.Īs others have stated, it’s also nigh impossible to prove that the software hasn’t been tampered with or images haven’t been altered after they were generated. There exist tuning forks which will read a certain speed when struck and placed in front of the antenna. It has to be sent out once or twice a year for recertification. The calibration that’s done for speed radar systems (at least the K55 that I own) is done by the manufacturer, not the police department.
The more evidence you can provide that is legal and valid, the better! Convincing them it is a higher priority than zero is good too, but sadly they weren’t lying about the under staffed and under resourced problems. Informing the police there is a problem is great. (I was hoping “In for a penny in for a pound” may apply due to the nature of the subject) An outdoor enclosure and everything related to locating it not near your home power/network would be involved, but may make things worth it to actually do something about such drivers. Of course more than just that software would be needed, camera (thus pi) positioning matters as well as focus. It performs automatic license plate to text conversion.
Then the images could potentially be used as evidence when it does catch a reckless driver going 40mph over the limit.Īlso I’m unsure of the compatibility with OpenCV, but have you looked into OpenAlpr as a future feature addition? Have you considered having your system officially calibrated at the police station, like the other radar and lidar speed guns they use? Posted in digital cameras hacks, Raspberry Pi, Slider Tagged opencv, Rasperry Pi, speed cameras Post navigation
But we have had a couple of dubious countermeasures, like that humorous attempt at an SQL injection attack, or a flash-based countermeasure. We’ve had a lot of OpenCV-based projects but haven’t featured a speed camera before here on Hackaday.
He provides installation and dependency instructions and a run-down of the software’s operation in his blog post, and the software itself is available on his GitHub account. The area of the image containing the road is defined by a bounding box, to stop spurious readings from birds or neighbours straying into view. The theory of operation is straightforward, the software tracks moving objects along the road in the camera’s field of view, times their traversal, and calculates the resulting speed. This set on a path to document the scale of the problem and lend justification to police action, which led him to use OpenCV and the Raspberry Pi camera to make his own speed camera. ’ brother-in-law posted a message on Facebook outlining just that problem, and sadly the local police department lacked the resources to enforce the limit. Suddenly the issue becomes one of personal safety, and all those arguments from the pub mean very little.
If you want a heated argument in the pub, throw that one into the mix.īut what if you live in a suburban street used as a so-called “rat run” through route, with drivers regularly flouting the speed limit by a significant margin. Wherever you stand on the topics of road safety and vehicle speed limits it’s probably fair to say that speed cameras are not a universally popular sight on our roads.