Guide to Buy Car Plate Recognition System in TGW Technology

Guide to Buy Car Plate Recognition System in TGW Technology


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Here is the story about car plate recognition system. Its designers, coming from Shenzhen Tiger Wong Technology Co.,Ltd, developed it after their systematic market survey and analysis. At that time when the product was a newcomer, they certainly were challenged: the production process, based on the immature market, was not 100% capable of producing 100% quality product; the quality inspection, which was a little different from others', was adjusted several times to get adapted to this new product; the clients had no willingness to try it and give feedback...Fortunately, all these were overcome thanks to their great efforts! It was finally launched onto the market and is now well received, thanks to its quality assured from the source, its production up to the standard, and its application widely expanded. Our TGW has seen successfully grown in China and we have also witnessed our efforts on the international expansion. After many market surveys, we realize that localization is essential to us. We quickly offer the full complement of local language support - phone, chat, and email. We also learn all the local laws and regulations to set up a localized marketing methods.At TGW Technology, one-stop service is available for car plate recognition system, including customization, delivery and packaging. It is always our mission to deliver a positive customer experience.
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ANPR(automatic number plate recognition)
ANPR(automatic number plate recognition)
ANPRWhat is ANPR?by:Shenzhen TGW Technology Co.,LtdAutomatic number Plate Recognition (ALPR) is a technology that can detect the Vehicle on the monitored road and automatically extract Vehicle License Plate information (English letters, Arabic Numbers and Plate color) for processing. License plate recognition is one of the most important parts of modern intelligent transportation system. Based on digital image processing, pattern recognition, computer vision and other technologies, it analyzes the vehicle images or video sequence taken by the Anpr camera to obtain the unique license plate number of each vehicle, thus completing the recognition process. Parking fee management, traffic flow control index measurement, vehicle positioning, car theft, automatic superhighway overspeed supervision, red light electronic police, highway toll station and other functions can be realized Because of a serious of follow-up processing . It is important for maintain traffic safety, fighting crime,prevent traffic jam and realize traffic automation management.Common application scenarios of ANPR1.ANPR in fighting crime    In fact, we can pinpoint the culprit of many traffic violations or other crimes by tracing to the license plate. Many intersections are equipped with a red light violation detection system, and the most important part of this system is intelligent number plate recognition system modules, the system record the number plate of vehicle , and then analysis which are suspicious vehicles according to Database comparison, determine illegal information, thus reducing the illegal behavior, control the status of the traffic on the road to ensure safety.Countries around the world are actively using ANPR to combat crime.On April 24, 2015,it was announced that Victoria Police to consider implementing $86 million live video ANPR system for patrol carsin November 2014, it was announced that The Royal Malaysian Police (PDRM) was to employ an Automated Number Plate Recognition(ANPR) system to identify vehicles with foreign registration plates with unsettled summonsesOn December 20, 2018, the local authority of Redbridge Announced that  £1.5m ANPR cameras installed to fight crime.Automatic number plate recognition software is proving invaluable to the Huntly police force.Within four hours of using the ANPR equipment last week, the team of eight stopped over 25 vehicles, including a car which had been stolen by knifepoint in Northland.2.anpr in parking lot management     Nowadays, more and more parking lots have improved access to ANPR to improve management efficiency. The traditional parking system cannot meet people's needs because of the high labor cost and low management efficiency. The parking lot managers are planing to update the traditional parking systems into smart parking systems      The traditional parking system can be modified by the automatic number plate recognition (anpr) technology. The ANPR camera captures the vehicle information and the image of the person clearly, so that the owner can enter and exit the parking lot without stopping. It can also monitor the running status of all online devices, realize equipment fault pre-discovery, self-repair, query various report functions in real time, and provide customers with on-site information in the form of multiple pictures, with real-time query charge amount, the system breaks through the region. Sexual restrictions have enabled remote management across the country. The parking lot charging system is charged automatically and supports the current popular mobile payment or login to a special parking app for payment. The whole process is fast and convenient.       At present, the traditional parking lot management system is prone to cause congestion during the peak hours of commuting. The traffic efficiency is extremely low because of the simple function of the system. Traditional parking lot does not have the functions of helping the owner to find a parking space, finding a car and paying a fee quickly. Manual charging also leads to capital loopholes, makes difficulty in collecting money for change, etc. it is necessary to install a separate database and front-end display for the parking lot during installation. The ANPR system adopts a fully automatic computer management mode. From the exit of the parking lot to the gate and then to the management center, all of them are maneged by the automatic control computer to make it convenient to manage. ANPR decrease the time we spend on vehicle entering the parking lot and leaving the parking lot. And it can easily realize unmanned operation at the entrance and exit, and automatically charge, which can greatly save costs. Therefore, the intelligent parking system that can meet the needs of the management and the owners has very high potential, and the future development prospect is very broad.Sorts of ANPR SYATEM    The basic hardware configuration of a license plate recognition system is composed of A ANPR camera, master controller, acquisition card and lighting device. The software is composed of an image analysis and processing software with license plate recognition function and a background management software to meet specific application requirements.License plate recognition system has two sorts of products, one is a combination of hardware and software, or the realization of hardware recognition function module, forming a full hardware license plate recognition, such as DSP. Another sort is open software and hardware system, that is, hardware adopts standard industrial products, software as embedded software. Both the two product formats have advantages as well as disadvantages. The advantage of the open system is that the hardware adopts standard industrial products, and the operation and maintenance are easy to grasp. The purchase of spare parts can be obtained from any manufacturer, and there is no need to worry about the permanent failure of products or procurement difficulties due to the failure or shortage of supply of one manufacturer. The integrated hardware and software products make it easier for users to operate and control the products. For later maintenance debugging is also easier to grasp.Anpr working process    Automatic number plate recognition is a pattern recognition technology that USES dynamic video or static images of vehicles to automatically recognize license number and license color. Its hardware base generally includes trigger equipment (monitoring whether the vehicle enters the field of vision), camera equipment, lighting equipment, image acquisition equipment, processor (such as a computer) that recognizes the license plate number, etc. Its software core includes license plate positioning algorithm, license plate character segmentation algorithm and optical character recognition algorithm. Some ANPR systems also have the ability to determine whether there is a car by using the video vehicle detection techno. A complete license plate recognition working process(as shown in figure ) should be include of vehicle detection, image acquisition, license plate recognition and other parts . When the vehicle detection part detects the arrival of a vehicle, the image acquisition unit is triggered to collect the current video image. The license plate recognition unit processes the image, locates the license plate position, then separates the characters in the license plate for recognition, and then output the license plate number.ANPR system Technical indicators    There are three indexes to evaluate a number plate recognition system: recognition rate, recognition speed and background management system. Of course, the premise is that the system should be able to operate reliably.1.ANPR Recognition rate    Whether a ANPR system is practical or not, the most important index is the recognition rate. The international traffic technology has made the special identification rate index elaboration, the request is 24 hours all-weather brand accurate identification rate above 95%.In order to test the recognition rate of a number plate recognition system, it is necessary to install the system in a practical application environment, operate 24 hours a day or more, collect license plates of at least 1000 natural traffic flows for identification, and store license plate images and recognition results for retrieval and viewing. Then, it is necessary to get the image of the actual passing vehicle and the correct result of manual identification. Then the following recognition rate can be calculated:1. The identification rate of natural traffic flow = the total number of correct identification of the full plate/the total number of actual passing vehicles2. The percentage of identifiable license plates = the total number of license plates correctly read by human/the total number of vehicles actually passed3. The correct recognition rate of all plates = the total number of license plates correctly recognized by all plates/the total number of license plates manually read. These three indicators determine the recognition rate of license plate recognition system.2.ANPR  Recognition speed    Recognition speed determines whether a license plate recognition system can meet the requirements of real - time application. A system with a high recognition rate, if it takes a few seconds or even minutes to recognize the result, will not be practical because it cannot meet the real-time requirements in practical applications. For example, speed is a powerful way to reduce travel time and avoid lane congestion in an application that USES license plate recognition to reduce travel time.The speed of identification proposed by international traffic technology is less than 1 second, the faster the better.3.ANPR Background management    The background management system of a license plate recognition system determines whether the license plate recognition system is useful. It is important to keep in mind that it is impossible to achieve a 100% recognition rate because the license plate is defaced, obscured, obscured, or the weather may be bad (snow, hail, fog, etc.). The functions of the backend management system should include:    1. Reliable storage of identification results and vehicle image data, which can protect image data from loss when the multi-function system operation makes the network error-prone, and facilitate manual investigation afterwards;    2, effective automatic alignment and query technology, the recognized license plate number with the database of thousands of license plate number automatic alignment and alarm prompt, if the license plate number is not read correctly when the use of fuzzy query technology to obtain the relative "best" comparison results;    3, a good license plate recognition system for network operation, but also need to provide real-time communication, network security, remote maintenance, dynamic data exchange, automatic database update, hardware parameter Settings, system fault diagnosis.  How to choose ANPR provider1.Attaches great importance to stability    With the improvement of product algorithm and industry technology, integration is not an important topic for a long time, but the most important point at the present stage is "stability". Stability is defined as: within a given speed range, the accuracy must be achieved without excessive error due to external environmental influences.For example, a license plate system that is more than 90 percent accurate during the day, down to 80 percent in the evening and 70 percent at night is more difficult to integrate than a license plate recognition system that is on average 70 percent accurate throughout the day. Because the user might think, now that the recognition rate of 90% during the day, the all-weather only reasonable accuracy is 90%, this specification does not include strange environment interference (torrential rain, hail, fog, sections, etc.), and set up the environment limit (, big wind shake height limit restrictions, it is not easy to artificial damage, etc.). 2.Product testing    Almost every company claims to have high recognition rate, but in order to avoid later because both sides cognitive difference of product, and to each other, the responsibility of dysfunctional users in purchasing the license plate recognition system, as well as for product testing, and test had better more than two weeks time, compare results can determine whether "exaggerated". Because of the changeable environment, two weeks should be able to grasp about 80% of the conditions that may affect the identification rate of the field. If you only measure it for a day or even a few hours, you cannot understand it.     In addition, since license plate recognition is a "system", the hardware and software architecture will certainly affect the "present results". As to what kind of software and hardware are suitable for what kind of environment, it must be different from environment to environment, because different application environments may not have the same requirements on identification rate, and this must be accumulated by experience.Although there are a variety of license plate recognition system on the market, the use of the product and structure, can save a lot of wasted money and time, but more importantly, the project and system integrators need to cooperate with and understand, rather than blindly focus on a brand is better, cheaper, nothing is cheaper.    In addition, whether the license plate recognition system can make the most use of the software technology, the camera and the field construction ability, also have a great deal to do. Users may request the manufacturer to the scene after the exploration, the paper puts forward establishing planning, the assessment should set up the first place, using an Angle, whether you need to set up auxiliary light source, etc., offer again, by these actions, in addition to assess in advance ability and users themselves can also achieve product learning and education training, management, in the future will be more clearly know the restrictions on the use of the products and the relevant measures. More info in wikipedia
Working principle and application scenario of license plate recognition system
Working principle and application scenario of license plate recognition system
by:Shenzhen TGW Technology Co.,LtdWorking principle and application scenario of license plate recognition systemThe license plate recognition system is an application of computer video image recognition technology in vehicle license plate recognition. License plate recognition is widely used in highway vehicle management and electronic toll collection systems. It is also the main means of identifying vehicle identity in combination with DSRC technology.The license plate recognition technology requires that a license plate in motion can be extracted and recognized from a complex background, and vehicle license plate recognition, image pre-processing, feature extraction, license plate character recognition and other technologies should be used to identify vehicle license plate and color information. In parking lot management, license plate recognition technology is also the main method to identify the identity of a vehicle.License plate recognition technology combined with electronic non-parking toll system (ETC) to identify vehicles, allowing vehicles to pass through the crossing without having to stop to realize automatic identification and charging of vehicles. In the management of the parking lot, in order to improve the efficiency of vehicle traffic at the entrance and exit, the license plate recognition aims at vehicles that do not charge parking fees (such as monthly trucks and free internal vehicles), and establish unmanned fast lanes to avoid the need for cards and parking. Change the management mode of access to parking lots.Working principle of license plate recognition parking systemNowadays, with the gradual expansion of urban vehicle crowds, many road junctions or parking lots have adopted intelligent license plate recognition technology, and the most prominent performance is that they are used in parking lots. Now many communities, commercial squares, shopping centers, airports, etc Each major parking lot has been transformed, from the traditional card parking system to the smart license plate recognition parking system. Then, what are the principles and applications of license plate recognition in the parking system? Let ’s take a look together.First, the working principle of license plate recognition in the parking lot system1. Vehicle viewing: Various methods such as buried coil viewing, infrared viewing, radar viewing technology, and barrier gate video viewing can be used to sense the passing of the vehicle and trigger image collection and capture.2. Image collection: Real-time, uninterrupted recording, and collection of passing vehicles through high-definition camera capture host.3. Preprocessing: Noise filtering, auto white balance, auto exposure and gamma correction, edge enhancement, contrast adjustment, etc.4. License plate positioning: Force scanning is performed on the gray images in the future through image preprocessing to determine the license plate area.5. Character cutting: After locating the license plate area in the image, through graying barriers, binarization, etc., the bit character area is accurately determined, and then character cutting is performed according to the character scale characteristics.6. Character recognition: Scaling and feature extraction of the cut characters, matching with the standard character expression form in the character database template.7. Effect output: Output the effect of license plate recognition in text format.Detailed working principle of license plate recognition parking systemTwo, four major applications of license plate recognition1, Parking lot and community entranceThe application of parking plate and community entrance and exit license plate recognition technology is mainly used to record the vehicle license plate number, license plate color, and time of entry and exit, and to complete the automatic processing of the vehicle in order to save manpower and forward power; for example, it can be used to distinguish between entering vehicles in smart communities. Is it due to the community, the automatic timing of toll gates for the completion of non-internal vehicles? In some units, this application can also be linked with the vehicle dispatching system to automatically and objectively record the vehicle out of the unit.It is very difficult to manually record the license plate number and parking time of the traveling vehicle by the parking lot and the entrance and exit of the community. Not only errors will occur, but also a lot of manpower needs to be invested. A small license plate recognition device can handle many questions at the entrance and exit of the parking lot. The license plate is blocked, the paint is cracked, and the blur can be analyzed and identified, which saves a lot of trouble for the staff at the parking lot and the entrance.2, Expressway Toll StationNowadays, China's highways are being built for thousands of miles, and the highways are unobstructed. Each exit is provided with a toll station, which facilitates toll collection on the one hand and helps traffic police to standardize the traffic on the highway. The application of the license plate recognition technology at the entrances and exits of highway toll stations can greatly facilitate traffic police to identify the license plate information of illegally trekking vehicles and to effectively handle and arrest some illegal vehicles.卡 The toll gate is generally located in an open-air environment, coupled with some vehicles traveling fast, so the requirements for license plate recognition technology are very high. Traditional license plate recognition is about 160P pixel license plate recognition. Useful image planning is small, the license plate miss rate is high, and it cannot meet the needs of the toll station bayonet. Now the application of high-definition license plate recognition has dealt with the question of the low license plate recognition rate, thus providing a reliable basis for the law of public security and traffic police.The license plate recognition system is installed at the entrance and exit of the toll booth. When a vehicle enters, the system recognizes the license plate of the vehicle and sends the recognized license plate information to the designated base processing server. By comparing it with the theft of the suspected vehicle in the database, It can be judged whether the road gate vehicles entering or exiting the toll gate of the expressway are stealing suspicious vehicles, which can greatly avoid the occurrence of illegal and illegal incidents and see the information about the work supply that has occurred.3. Application in highway bayonetWith the increase in the number of roads created by our country and the overall improvement of people's living standards, the number of people who buy cars now continues to increase, posing various illegal questions to the highway. As a necessary basis for illegal vehicle punishment, the license plate recognition technology can automatically check and identify the vehicle number plate in the video. The most typical one is the security checkpoint system. This system assumes that without the license plate recognition technology, there is no real intelligence Into.完善 A complete security bayonet processing system should have three primary functions of automatic license plate recognition, bayonet application system and base processing channel. The license plate recognition is the most important part in the meantime. The quality of the license plate recognition directly affects the overall function of the bayonet system, and the recognition speed is its most important technical indicator. The recognition speed is fast, the system requirements occupy fewer system resources, the possibility of manual intervention is small, and the work burden of the system network is correspondingly reduced. The recognition of the license plate is fast and accurate. The license plate recognition system is intelligent and useful to complete the automatic comparison alarm to avoid many false alarms. It can provide powerful and reliable crack detection information for anti-theft vehicles, deck vehicles illegally grabbed vehicles and other illegal crime detection.Detailed working principle of license plate recognition parking system4. Application in urban transportationIn recent years, with the rapid development of society and the economy, the rapid increase in the number of motor vehicle barriers, road transportation has become more and busier. The hostility of traffic handling status and needs has further intensified, and criminal and public security cases related to traffic have also increased year by year. Under this circumstance, how to use preemptive technology to strengthen the police's investigation and control of motor vehicles and drivers in the city, and to provide technology for impacting various illegal and illegal acts is a question that the police's traffic processing department needs to deal with urgently.Nowadays, the license plate recognition parking lot system is currently considered to be a set of parking lot management systems that are more convenient to manage and vehicles pass quickly. Because of its advantages such as high recognition rate and fast traffic, it has been favored by many users. However, in order to better manage the parking lot and the problem of parking difficulties, the parking lot system is constantly upgraded and the functions are constantly increasing. Of course, the license plate recognition technology must not fall behind. The license plate recognition system will definitely bring a lot of convenience to the management of the parking lot system.We are a License plate recognition company which specialize in ALPR system,(License plate recognition),we offer ALPR solution all around the world.Click the links bellow to learn more about our products!ALPR software,ALPR camera ,ALPR hardware,license plate recognition system,LPR cameraYou can also learn more about ALPR at Wikipedia
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