On the car photo identification system in application status on the market (1)

Vehicle license plate recognition system development for several years, has been a lot of users of all ages and in a larger scope.

This article in its application, the reader provides details about the license plate recognition technology, want to give readers some reference.

According to the standards of the JT-T604-2004 automobile license plate recognition systems, video, car licence recognizer is used on vehicle number plates for image capture and analysis of recognition, the final output vehicle license plate information system.

Vehicle license plate recognition for use contain smart supplemental lighting technology of dedicated imaging system, which is based on computer image processing technology to capture plate image analysis, position, rotation, correction, segmentation and recognition processes, automatic identification of the vehicle licence.

Car license plate recognition technology introduction

Vehicle license plate recognition system mainly includes trigger module, imaging module, identification module, communication module and application module five parts.

These Imaging module, recognition module is a car license plate recognition system.

Trigger module: automatic detection of vehicles in designated areas, common trigger mode is triggered, the video trigger coil, infrared trigger, radar, laser trigger fires.

At present, the toll system most used way to coil trigger fires.

Imaging modules: Imaging control and supplemental lighting technology, makes it clear-weather imaging camera.

Orient reflector and the combination of natural light, increased licence recognition rate and location.

Locate a high rate, the rate of recognition. Camera imaging control technology and smart supplemental lighting technology, ensure that the image quality, are not affected by the headlamps and light and shade, imaging and recognition rate high.

Recognition module: it is used to capture images of vehicles, using image processing and pattern recognition technology to capture image analysis, recognition.

Vehicle license plate recognition technology applied to urban congestion pricing system does not need to install any on-board equipment, you can reduce a lot of initial investment, but congestion pricing system for vehicle license plate recognition of associate degree requirements are very high.

Highway Toll Administration

1. toll system

In the current charging system has some problems, such as a break between the card and other drivers, resulting in the loss; toll charges ' cheating drop models, resulting in the loss; toll charges ' hands lose license plate, workload, and error-prone; free cars, blacklist information management in the car did not.

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System installed at the entrance lane vehicle license plate recognition, you can resolve this problem, prevent the break between the card drivers, avoid toll erosion; assisted vehicle classification, automatically build license plate and vehicle one-to-one model library, preventing the vehicle down stalls; automatic recognition of license plate information, charges ' check to avoid an error; the establishment of a free vehicle database, only free vehicle database of vehicles to free release; build blacklists vehicle database, when the blacklist vehicles through exports, the system will automatically alert, prompt for processing.

2. multiple path identification split account system

In the toll system construction, are faced with multiple path identification and settlement issues.

In the toll, inevitably there are Freeway loop, that is, vehicles can network from start through different routes to the destination. Diversification in the investment of road network environment, the path to recognition involves passing on each vehicle how to calculate tolls, taking the income of which split to a toll charge unit, the toll of split is directly related to the legitimate interests of the highway.

In order to address the above issues, in highway road network in all toll station entrance lane, exit lane installed car license plate recognition; in the ambiguity of the key points on the path to install gantry car license plate recognition system.

System maximize vehicle license plate recognition, recognition for the path to provide professional, practical management decision-making and service information, which greatly improves the efficiency and level of supervision fees, Figure 7 shows the multiple path identification split accounts system network structure and function of each part.

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