recognition process of license plate recognition system < / a >

Automatic license plate recognition is a pattern recognition technology that uses the dynamic video or static image of the vehicle to automatically recognize the number and color of the license plate. Its hardware foundation generally includes trigger equipment (monitoring whether the vehicle enters the field of vision), camera equipment, lighting equipment, image acquisition equipment, processor for recognizing license plate number (such as computer), etc. its software core includes license plate location algorithm, license plate character segmentation algorithm and optical character recognition algorithm. Some license plate recognition systems also have the function of judging whether there is a car through video image, which is called video vehicle detection

A complete license plate recognition system should include vehicle detection, image acquisition, license plate recognition and other parts. When the vehicle detection section detects the arrival of the vehicle, it triggers the image acquisition unit to collect the current video image. The license plate recognition unit processes the image, locates the license plate position, segments the characters in the license plate for recognition, and then forms the license plate number output