Whether it is soft recognition or hard recognition, it is actually software recognition, and the core recognition algorithm is the same, but most of the software recognition runs on the PC, and most of the hardware recognition runs on the DSP (digital signal processing chip).
Software recognition, it is obvious that the meaning of the word can be understood through software on the license plate number, and by installing a matching license plate recognition software on the computer, the captured pictures are recognized and processed. Its working method is to continuously capture multiple photos through a camera (analog standard definition camera), select one of the clearer ones, and then process characters through computer software to realize number plate recognition. Because each recognition needs to capture multiple pictures, the speed of soft recognition is relatively slow. Moreover, the system has extremely high requirements for the captured pictures, which must be extremely clear to achieve the desired effect. The system has extremely high requirements on the on-site environment and debugging quality, and is not suitable for many occasions where the environment is not optimistic, and the placement of equipment is quite important.
Hardware recognition, the popular explanation is to perform a series of character processing on the captured pictures through independent hardware equipment; front-end hardware recognition is also called integrated license plate recognition camera, which is to embed a traditional independent license plate The hardware is integrated with the camera. At present, the instrument is called the license plate recognition all-in-one machine. Why it is called so, because the capture device can realize a series of tasks of image capture and character recognition. The license plate recognition capture device is a device that perfectly integrates capture and recognition by using a network-type million-dollar high-definition camera and embedded hardware recognition technology.
So how to reflect the advantages of COMA license plate recognition system?
First of all, the license plate recognition camera is easy to install. You only need to consider the installation position of the camera. The capture device has less strict requirements on the environment, and there is no problem outdoors. It solves the problem of a separate license plate recognition device. The traditional hardware recognition system needs to consider the license plate recognition device while installing a camera.
Secondly, because the license plate recognition camera combines the network high-definition camera and embedded hardware recognition technology, the requirements for the on-site environment are not so high. Capture the whole lane, the on-site environment is clearly visible, the license plate can be tilted at a large angle, and the road requirements are low, and the lane photo, license plate photo, and license plate number are automatically output. The traditional license plate recognition system has extremely strict requirements on photos.
Thirdly, its wiring is convenient, the license plate recognition camera is transmitted through TCP/IP communication mode, data transmission only needs a network cable, the integrated network license plate recognition camera has a built-in power supply, and can be directly powered.
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