At present, due to the application of the license plate recognition system , when the vehicle enters or exits the parking lot, it does not need to use parking cards to speed up the speed of the vehicle, saves the work of card management, and reduces the expenses of the management staff. Therefore, it is widely used in major parking lots. in. However, license plate recognition can sometimes result in the identification of errors. How to improve the recognition rate of the license plate system is the key.
From the perspective of internal factors, the license plate recognition system is based on the license plate recognition algorithm, and the license plate recognition algorithm consists of space complexity and time complexity, and is divided into five different characteristics:
1. The evolutionary nature of the finiteness or algorithm is limited, and it is impossible to have unlimited calculations.
2, the exact nature of the algorithm has more than one exact definition of each step;
3, the input item is the specific license plate image;
4. The output item is the recognition result of the license plate;
5. The feasibility is the effect of license plate recognition.
From the aspect of external factors, the factors influencing the license plate recognition rate mainly include viewpoint conversion, light, shielding, proportion, deformation and background complexity.
License plate recognition system is mainly used in the parking lot gate, vehicle detectors, high-definition license plate capture camera, electronic display, control center and other components. Through the HD license plate capture camera, the license plate of the import and export vehicle is captured, and before and after the picture is extracted to determine whether to release the vehicle. It can be seen that the license plate recognition parking system has a high requirement for the entire system, and the external environment also has a great influence on the recognition rate.
There are two main reasons that affect the recognition rate for the parking lot license plate recognition parking system. First, it is necessary to ensure that the ambient light of the parking lot is bright enough. When the light is dark or at night, it should be increased by some The second is to ensure that the license plate of the vehicle entering and exiting the parking lot is intact, so that it is possible to ensure that the vehicle license plate for each entry and exit can be captured.
Therefore, the recognition rate of the license plate can be effectively improved by avoiding the complexity of the recognition environment and slowing the vehicle speed through auxiliary means.
Market research shows that the license plate recognition industry has been applied in many fields. The corresponding license plate recognition manufacturers have also ushered in the peak period of development, and the number is also increasing day by day. While we are seeing an increase in the number of people, we cannot ignore the problems that lie behind it. The development status and problems are as follows:
Technical bottlenecks: Identification technology is the key to the development of this industry. The recognition rate directly reflects the value of the system in practice. Some license plate recognition manufacturers with relatively high recognition rates can naturally be welcomed by everyone in the market. With regard to the existing license plate recognition system on the market, manufacturers with a recognition rate as high as 95%-100% are still rare, and the recognition rate of most manufacturers is difficult to achieve the effect of advertising;
The development level is low: We previously said that license plate recognition manufacturers are in a state of cohabitation. Although there are tens of thousands of companies, they have few core technologies. And these manufacturers do not form their own leading brands in marketing, blindly focus only on sales channels, there is a problem of positioning confusion, exaggerated propaganda.
The application scale is smaller: We have seen the most application of license plate recognition or in some areas such as highway buckles and parking lots, which not only does not require excessive recognition rate but also has a low degree of marketization. However, for license plate recognition manufacturers, it has always been a long-term business to rely on easy-to-install, easy-to-use recognition terminals to profit.
This is the status quo of the industry that license plate recognition manufacturers are facing, and it is also a question that these manufacturers need to seriously consider in the future. Overall, the core technology is the key to the industry to break through the development bottleneck.
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