What is the license plate recognition system, the principle of which is how?
2022-06-06 00:00:00
the application of license plate recognition system is more and more popular, at present has been widely used in business parking lot, hotel parking lot, car park, etc.A car license plate recognition not only can easily do a card, improve vehicle safety, improve management level, and can make the parking lot is more modern, more grade, attaches great importance to the user experience, high-grade car park system is one of the necessary configuration.So what is the license plate recognition system, the principle of which is how?
in short, through the gateway of the camera acquisition vehicle license plate recognition system of license plate images, after processing, the image information into digital signal, then print license plate number for identification.
the license plate recognition system is mainly composed of vehicle detection, image acquisition and license plate recognition of several parts, its hardware has detector (testing whether the vehicle into the identification range), photographic equipment, lighting equipment, image acquisition and recognition of license plate number of processor (computer) and so on, the software is mainly some algorithms, such as license plate localization algorithm, license plate character segmentation algorithm and optical character recognition algorithm, etc.
let’s one by one.
a, vehicle detection
the vehicle detection can be said to be the trigger of license plate recognition system, is mainly used to detect if it need to identify general detection technique has ground sense coil detection, infrared detection and radar detection, video, etc.
2, image acquisition
detector to detect vehicles, import and export to capture the camera on the vehicle license plate.This part of equipment such as camera equipment, lighting equipment.License plate recognition rate is closely related to the definition of the image quality, so this part using better cameras and lighting conditions that we should do.
3, license plate recognition
license plate recognition of license plate number and color identification, the algorithm is different between them.License plate number to identify the steps as follows:
1. To locate the license plate area, the first thing to do is to locate vehicle license plate location, set a good acquisition area;
2. To collect the characters in the image segmentation, character segmentation.
3. The partition of the characters, which can identify component number.
the license plate recognition of color recognition have another algorithm and steps, here we are not clear, we just need to know number recognition and color recognition is complementary to each other.