CN202904885U - Vehicle license plate recognition control system - Google Patents
Vehicle license plate recognition control system Download PDFInfo
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- CN202904885U CN202904885U CN 201220419811 CN201220419811U CN202904885U CN 202904885 U CN202904885 U CN 202904885U CN 201220419811 CN201220419811 CN 201220419811 CN 201220419811 U CN201220419811 U CN 201220419811U CN 202904885 U CN202904885 U CN 202904885U
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- license plate
- control system
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Abstract
The utility model relates to a vehicle license plate recognition control system. The system is connected with a control switch of a community gate, and comprises an image collector, an image memory, an image processor, a standard vehicle license plate template database and an external interface. The image collector and the image memory are connected. The image processor is connected with the image memory and the standard vehicle license plate template database respectively. The external interface is connected with the image processor and a control switch respectively. Compared with the prior art, the system has advantages of simple structure, high recognition rate, etc.
Description
Technical field
The utility model relates to a kind of recognition system, especially relates to a kind of car plate control system for identifying.
Background technology
License plate recognition technology is the important component part of automatic vehicle identification technology, thereby mainly to be the thought of utilizing each automobile to have unique number-plate number different vehicle to have different licence plates identify and calculating vehicle for it.It by technology such as a series of image processing, pattern-recognitions, carries out the identification of the number-plate number with the vehicle image of shot by camera, in the situation that do not affect vehicle condition, computing machine is finished the identification of the number-plate number automatically.
Realization enters the high security of all vehicles of residential quarter, and accurately identifying car plate is the most basic function of district vehicles management system.Yet also there are the shortcomings such as discrimination Gao Bugao, management inconvenience in existing recognition system.
Summary of the invention
The purpose of this utility model is exactly that a kind of simple in structure, car plate control system for identifying that discrimination is high is provided in order to overcome the defective that above-mentioned prior art exists.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of car plate control system for identifying, this system is connected with the gauge tap at gate, residential quarter, this system comprises image acquisition device, video memory, image processor, standard car plate template database and external interface, described image acquisition device is connected with video memory, described image processor connects respectively video memory and standard car plate template database, and described external interface connects respectively image processor and gauge tap.
Described image acquisition device is for gathering the camera of front license plate image.
Described image processor comprises image extraction unit, gray scale processing unit, binary conversion treatment unit, image geometry adjustment unit and the image template matching unit that connects successively, described image extraction unit is connected with video memory, and described image template matching unit is connection standard plate template database and external interface respectively.
Compared with prior art, the utlity model has following advantage:
1) the utility model can carry out Intelligent Recognition to automotive license plate, and its relative discrimination is higher;
2) whether be car plate in database to the utility model if utilizing standard car plate template database to search this car plate, have advantages of simple in structure, discrimination is high;
3) the utility model adopts the method for part coupling to carry out template matches, effectively saves the computing time of internal processes.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model image processor.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment
As shown in Figure 1, a kind of car plate control system for identifying, this system is connected with the gauge tap 6 at gate, residential quarter, this system comprises image acquisition device 1, video memory 2, image processor 3, standard car plate template database 4 and external interface 5, described image acquisition device 1 is connected with video memory 2, described image processor 3 connects respectively video memory 2 and standard car plate template database 4, and described external interface 5 connects respectively image processor 3 and gauge tap 6.Described image acquisition device 1 is for gathering the camera of front license plate image.
As shown in Figure 2, image processor 3 comprises image extraction unit 31, gray scale processing unit 32, binary conversion treatment unit 33, image geometry adjustment unit 34 and the image template matching unit 35 that connects successively, image extraction unit 31 is connected with video memory 2, and described image template matching unit 32 is connection standard plate template database 4 and external interface 5 respectively.
The principle of work of above-mentioned car plate control system for identifying is:
Behind the BMP image of the vehicle license plate that many dead aheads of image acquisition device 1 collection are static, be stored into video memory 2; Image extraction unit 31 is extracted a width of cloth BMP image from video memory 2; Gray scale processing unit 32 carries out gray scale with this width of cloth image to be processed, and changes gray-scale map into; Binary conversion treatment unit 33 is converted to binary map with gray-scale map, because car plate part background color be blue, the character in the middle of the car plate be white, but is wrapped up by blueness, so just can be converted into easily binary map; Image geometry adjustment unit 34 obtains image the actual photographed zone of image through horizontal projection and vertical projection, i.e. CAera, analyze this area district, according to length breadth ratio entire image is carried out geometry adjustment, namely rotate to an angle, the convergent-divergent certain proportion finally obtains standard identification figure (with a Chinese character, a letter, 4 is the binary map of numeral).
With the standard identification figure input picture template matches unit 35 that obtains, image template matching unit 35 carries out template matches according to the standard car plate in the standard car plate template database 4, for effective saving program computing time and to the database identification of car plate outward, the template matches of the utility model system adopts the method for part coupling, 6 characters that are about to car plate take apart respectively with database in template figure mate, obtain license plate number.Image template matching unit 35 is according to matching result, automatic switch by external interface 5 and gauge tap 6 control gates, residential quarter: if the match is successful, namely this license plate number is the car plate in the standard car plate template database, and image template matching unit 35 sends enabling signal by external interface 5 to gauge tap 6 and opens the gate, residential quarter; Otherwise image template matching unit 35 does not send enabling signal to gauge tap 6, and the gate, residential quarter keeps closed condition.
Claims (2)
1. car plate control system for identifying, this system is connected with the gauge tap at gate, residential quarter, it is characterized in that, this system comprises image acquisition device, video memory, image processor, standard car plate template database and external interface, described image acquisition device is connected with video memory, described image processor connects respectively video memory and standard car plate template database, and described external interface connects respectively image processor and gauge tap.
2. a kind of car plate control system for identifying according to claim 1 is characterized in that, described image acquisition device is for gathering the camera of front license plate image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220419811 CN202904885U (en) | 2012-08-22 | 2012-08-22 | Vehicle license plate recognition control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220419811 CN202904885U (en) | 2012-08-22 | 2012-08-22 | Vehicle license plate recognition control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202904885U true CN202904885U (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220419811 Expired - Fee Related CN202904885U (en) | 2012-08-22 | 2012-08-22 | Vehicle license plate recognition control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN202904885U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632548A (en) * | 2012-08-22 | 2014-03-12 | 上海工程技术大学 | License plate recognition control system and application thereof |
| CN105719488A (en) * | 2014-12-02 | 2016-06-29 | 杭州海康威视数字技术股份有限公司 | License plate recognition method and apparatus, and camera and system for license plate recognition |
-
2012
- 2012-08-22 CN CN 201220419811 patent/CN202904885U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632548A (en) * | 2012-08-22 | 2014-03-12 | 上海工程技术大学 | License plate recognition control system and application thereof |
| CN105719488A (en) * | 2014-12-02 | 2016-06-29 | 杭州海康威视数字技术股份有限公司 | License plate recognition method and apparatus, and camera and system for license plate recognition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20150822 |
|
| EXPY | Termination of patent right or utility model |