License Plate Recognition Cameras
- 30 Dec, 2020
License Plate Security Cameras
License Plate Security Cameras are one of the fastest-growing segments of the security camera market that have developed recently. They allow you to capture the license plate numbers and other details of vehicles that enter a particular area.
This technology is most popular in areas of high vehicular traffic like car parks, petrol stations, and entry points to office and residential buildings. License plate cameras allow you to monitor large areas where it may be impractical or unsafe for an employee to do so.
With the latest developments in license plate camera technology, it is possible to obtain license late details of vehicles moving at high speed, in bad weather, in situations where there is glare from the headlights or reflections from shiny surfaces, in very dark environments and from a great distance.
A popular development is the ability to use license plate recognition (LPR) to trigger a surveillance act, for example, to start recording when a particular vehicle enters the area under surveillance, or to follow the vehicle within that area.
Using Your License Plate Security Camera
No matter how well a surveillance camera is designed and constructed, its functions and capabilities can always be enhanced by creating the ideal working conditions. We mentioned some of the common problems that license plate cameras are designed to overcome:
- high speed
- bad weather
- glare from the headlights
- reflections from shiny surfaces
- dark environments
The right license plate camera system design can compensate for and overcome these common problems.
High speed – A slow-moving or stationary target is always best for image capture. To achieve this, use barriers and speed bumps to slow down the flow of traffic before the area where your camera is positioned.
Bad weather – Rain, hail and snow can drastically affect license plate recognition. Many cameras today incorporate technology that allows them to see through the distortion caused by these weather scenarios. However, simply erecting a shaded area where you to intend to capture license plate images can achieve the same, or better, effect at lower cost.
Glare from headlights – Most of the latest license plate camera programs are designed specifically to counter this common problem. Image capture is controlled with filters that limit the amount of light in the very extreme range of brightness to be captured. You can enhance this capability by positioning your camera at an angle that reduces the amount of glare it would receive.
Reflections from shiny surfaces – License plate camera technology compensates for common phenomena like reflections by filtering out abnormal images. You can assist the capability by ensuring that there are no shiny or reflective surfaces in the vicinity of the area where you intend for images to be captured.
Dark environments – This is the problem which is most easily solved – almost every camera design comes with the capability for night time and low-light image capture through infrared technology. Cameras that use CCD technology instead of CMOS generally achieve better images in dark conditions than those that are equipped with CMOS technology. Again, you can circumvent this problem from arising in the first place by ensuring that the area under surveillance is lit well. This can also allow you to opt for a less expensive camera system.
Distance – Distance is no longer a major factor in license plate capture, unless you are looking at extreme distances. Megapixel cameras can obtain very high resolution images that can provide distinct information even after digital zooming. The best results are always achieved when the camera can be positioned within 30 feet of the vehicle’s license plate (preferably head-on instead of at an angle)
The best results are achieved when you combine the use of a license plate camera with another generic surveillance camera. The first will capture the license plate information while the latter will capture other relevant details like the colour, make and model of the car.
Together, this information will ensure that the right car can be easily identified if and when the need arises.