CN104537844B - Vehicle License Plate Recognition System for peccancy detection - Google Patents
Vehicle License Plate Recognition System for peccancy detection Download PDFInfo
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- CN104537844B CN104537844B CN201510038020.2A CN201510038020A CN104537844B CN 104537844 B CN104537844 B CN 104537844B CN 201510038020 A CN201510038020 A CN 201510038020A CN 104537844 B CN104537844 B CN 104537844B
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- 238000001514 detection method Methods 0.000 title claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 230000033228 biological regulation Effects 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000012937 correction Methods 0.000 claims description 2
- 230000003111 delayed effect Effects 0.000 claims description 2
- 230000001788 irregular Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 2
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
- G08G1/0175—Detecting movement of traffic to be counted or controlled identifying vehicles by photographing vehicles, e.g. when violating traffic rules
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Abstract
In order to obtain information of vehicles when improving vehicle peccancy, the invention provides a kind of Vehicle License Plate Recognition System for peccancy detection, for the car plate of the vehicles peccancy of crossroad is identified, including video monitor unit, angle information lock unit and video acquisition unit, described video acquisition unit includes the even number recognition unit being arranged to annular, each recognition unit all includes that wireless data transmission device and video acquisition device, described video acquisition device have high-definition shooting pattern and ordinary sharpness screening-mode.The present invention can adjust the shooting clear degree of video acquisition device according to angle information lock unit, thus is greatly improved the success rate of Car license recognition, and reduces the waste of unnecessary video memory space.
Description
Technical field
The present invention relates to field of license plate recognition, more particularly, to a kind of car plate for peccancy detection
Identification system.
Background technology
Along with the high speed development of Chinese national economy, domestic motor vehicles, highway, urban road,
Parking lots etc. get more and more, and the requirement to traffic control, safety management is increased the most day by day, intelligent transportation system
ITS (Intelligent Transportation System) has become the development trend of 21 century control of traffic and road,
Increasingly it is subject to people's attention.Wherein Vehicle License Plate Recognition System is certainly as the core of intelligent traffic administration system
The intelligent traffic administration system of dynamicization provides efficient, practical means, can be widely applied to traffic monitoring,
Site survey of traffic accident, break in traffic rules and regulations record automatically, criminal tracking, highway toll collection system,
The aspects such as parking lot automatic safe management, Itellectualized uptown management, to improve field of traffic management level and from
Dynamicization degree is significant.
Although there has been a lot of seemingly ripe Car license recognition product at present, but it really is able to apply to reality
Car license recognition product occurs in abroad mostly, and comprises structure complexity for China's car plate standard is various, internal
Chinese character, car plate is defaced or the problem such as deliberately block is still without a fine solution so that mesh
Before domestic go back neither one can under various outdoor conditions efficient, stable, the discrimination height of all weather operations
Car license recognition product.Therefore, this vacancy attracts numerous people and goes constantly to study and explore.Right
The Car license recognition product occurred in current China carries out video capture to identify car plate with dependence hardware trigger system
Mode in the majority, such as magnetic induction loop, infrared, radio frequency etc., its toggle rate is higher, but the installation of hardware device
Higher with maintenance cost.And along with the fast development of computer technology, the operational speed of a computer significantly improves,
Vehicle License Plate Recognition System based on video increasingly receives publicity, and its advantage is that of avoiding the dependence to hardware device
Thus reducing cost, its shortcoming is that operand is big, and the image being identified is the frame in video, this figure
As being affected by vehicle traveling direction, speed and other external interference, acquired picture quality is not as static state
Image.
Summary of the invention
Information of vehicles is obtained, especially when the technical problem to be solved is how to improve vehicle peccancy
License board information, success rate.In order to solve the problems referred to above, the invention provides following technical scheme: one
Plant the Vehicle License Plate Recognition System for peccancy detection, for the car plate of the vehicles peccancy of crossroad is identified,
Including video monitor unit, angle information lock unit and video acquisition unit, described video acquisition unit bag
Including the even number recognition unit being arranged to annular, each recognition unit all includes wireless data transmission device and regards
Frequently harvester, described video acquisition device has high-definition shooting pattern and ordinary sharpness screening-mode, uses
In shooting automobile video frequency and being added to by timestamp in gathered video, the video of these recognition units is adopted
Acquisition means arranges in diagonal angle two-by-two and video acquisition is all carried out in units of four video acquisition devices simultaneously every time
Video acquisition, described Vehicle License Plate Recognition System also includes that unit proofreaded by clock, is used for making the same video of described timestamp
The time synchronized of monitoring unit, described angle information lock unit is used for determining which video acquisition device is set
Putting high-definition shooting pattern, which video acquisition device is set to ordinary sharpness screening-mode.
Further, described video monitor unit includes video analysis unit and video storage unit.
Further, described video storage unit includes video compressing unit and memorizer.
Further, described recognition unit determines video acquisition to be unlocked according to angle information lock unit
Device.
Further, described Vehicle License Plate Recognition System also includes lighting unit.
Further, described annular can also is that Else Rule or irregular shape.
The invention has the beneficial effects as follows: the bat of video acquisition device can be adjusted according to angle information lock unit
Take the photograph definition, thus be greatly improved the success rate of Car license recognition, and reduce unnecessary video memory space
Waste.
Accompanying drawing explanation
Fig. 1 shows the structural frames of the preferred embodiment of the Vehicle License Plate Recognition System for peccancy detection of the present invention
Figure.
Fig. 2 shows the duty example of the video acquisition device when craspedodrome lamp turns green.
Detailed description of the invention
As it is shown in figure 1, the Vehicle License Plate Recognition System for peccancy detection includes video monitor unit, angle information
Lock unit and video acquisition unit, described video acquisition unit includes the even number identification being arranged to annular
Unit, each recognition unit all includes that wireless data transmission device and video camera, described video camera have high definition and clap
Take the photograph pattern and ordinary sharpness screening-mode, be used for shooting automobile video frequency and being added to by timestamp and gathered
Video in, the video camera of these recognition units arranges in diagonal angle two-by-two and every time video acquisition is all taken the photograph with four
Camera is that unit carries out video acquisition simultaneously, and described Vehicle License Plate Recognition System also includes that unit proofreaded by clock, is used for
Make described timestamp with the time synchronized of video monitor unit.
Described video monitor unit is arranged near crossroad or the Control Room of remote monitoring center, adopts
The server strong with video or Image Information Processing ability or work station, such as, graphics workstation.
Described angle information lock unit is used for determining which video camera is set to high-definition shooting pattern, which
Video camera is set to ordinary sharpness screening-mode.The standard determined is: according to being likely to occur car violating the regulations
Two points that the direction at place, road is intersected with described annular, two video acquisition unit neighbouring to each point
Video camera arranges high-definition shooting pattern, and other video capture mode arranges the shooting mould of ordinary sharpness
Formula.The shooting mode of camera switching signal that this angle information lock unit sends to each video acquisition unit
It is that the traffic responsive signal according to crossroad obtains.Such as, as in figure 2 it is shown, work as the straight of crossroad
Portable lighter turns green, and when left-hand rotation lamp and right-hand rotation lamp are red, then the track of vehicle peccancy is Through Lane and right-turn lane.
Now, there are two friendships in the annular that the direction of left turn lane and right-turn lane is constituted respectively with each recognition unit
Point, each near intersections exists two apart from nearest two video cameras of this intersection point.Therefore, Through Lane
Four video cameras will be opened respectively with the direction of right-turn lane and enter high-definition shooting pattern.In Fig. 2, circular table
Show the annular that all recognition units are constituted, by horizontal, vertical orthogonal two dotted lines in this circle center of circle
Intersection point, the i.e. center of circle, represent the center of crossroad.The centrage of left turn lane and the level side of crossroad
Becoming 45 degree of angles to (vertical view), the centrage of right-turn lane becomes 45 with the horizontal direction (vertical view) of crossroad
Degree angle.Left turn lane centrage and right-turn lane centrage be currently in once have vehicle cross occur as soon as violating the regulations
Situation.Therefore, once the ground coil of left turn lane and right-turn lane has sensed that vehicle crosses, then sentence
It is set to and vehicle peccancy situation now occurs.It is to say, now, video monitor unit receives this signal,
Control angle information synchronizing unit and open the high-definition shooting pattern of 8 video cameras as shown in Figure 2, and control
The video camera of other recognition unit is in ordinary sharpness screening-mode.
According to a preferred embodiment of the invention, entering and exit high-definition shooting pattern is according to each recognition unit
In electromagnetic valve realize.This electromagnetic valve receives the signal from angle information lock unit, and then produces electricity
The action of magnet valve.Electromagnetic valve changes the position of the screening-mode switching switch of video camera, thus changes video camera
Change to ordinary sharpness screening-mode from high-definition shooting pattern, or in turn.
Described clock check and correction unit make in each integral point moment time of the video camera of each recognition unit with
The time synchronized of video monitor unit, is so conducive to the accuracy during video decomposition framing of situation violating the regulations.
When video is wirelessly transferred to video monitor unit, video signal is filtered through video
Ripple and coding circuit plate are encoded to the video of H.264 form by hardware, are delayed by one through chronotron simultaneously
Section time (such as 20 seconds).Video analysis unit preserves the video in this section of delay time in it caches
Copy.During this time delay, if there is situation violating the regulations, then video analysis unit according to violating the regulations occur time
Carve, decompose frame by frame in the above-mentioned moment through above-mentioned video copy, and select through image processing algorithm
Wherein license plate image is obtained the most some images (preferably, with 4 two field pictures before definition sequence
It is as the criterion), these some two field pictures are together saved in video together with the video without above-mentioned coding from video camera
Memory element.Video storage unit includes video compressing unit and memorizer, in order to more save video storage sky
Between, video to be saved in memorizer (such as, magnanimity hard disk) after video compressing unit is compressed again.
Preferably, Vehicle License Plate Recognition System also includes lighting unit.When video camera enters high-definition shooting pattern,
Video camera also controls lighting unit floor light, former with the car plate avoiding the reason such as ambient black, weather to cause
The problem that beginning image definition is the highest.
Above detailed description of the invention is illustrative of the invention, and is not intended to limit the present invention.Obviously, ability
The technical staff in territory can carry out various change and modification without deviating from the spirit of the present invention and model to the present invention
Enclose.So, if these amendments and modification to the present invention belong to the claims in the present invention and equivalent technologies thereof
Within the scope of, then the present invention is also intended to comprise these change and modification.
Claims (3)
1. for a Vehicle License Plate Recognition System for peccancy detection, for the car plate of the vehicles peccancy to crossroad
It is identified, including angle information lock unit and video acquisition unit, it is characterised in that also include that video is supervised
Control unit, described video acquisition unit includes the even number recognition unit being arranged to annular, and each recognition unit is equal
Including wireless data transmission device and video acquisition device, described video acquisition device is for adding to timestamp
In the video gathered, the video acquisition device of these recognition units is arranged in diagonal angle and each video acquisition two-by-two
All carrying out video acquisition in units of four video acquisition devices, described Vehicle License Plate Recognition System also includes clock simultaneously
Check and correction unit, for making described timestamp synchronize single with the time synchronized of video monitor unit, described angle information
Unit is used for determining which video acquisition device is set to high-definition shooting pattern, and which video acquisition device is set
To ordinary sharpness screening-mode；
Described video monitor unit includes video analysis unit and video storage unit；
Described video monitor unit is arranged near crossroad or the Control Room of remote monitoring center, uses
Graphics workstation；
Described angle information lock unit is used for determining which video camera is set to high-definition shooting pattern, and which is taken the photograph
Camera is set to ordinary sharpness screening-mode；The standard determined is: according to being likely to occur track institute violating the regulations
Two points intersecting with described annular of direction, the video camera of two video acquisition unit neighbouring to each point
High-definition shooting pattern is set, and other video capture mode is arranged the screening-mode of ordinary sharpness；This angle
Degree information synchronizing unit is according to ten to the shooting mode of camera switching signal that each video acquisition unit sends
The traffic responsive signal at word crossing obtains；
When video is wirelessly transferred to video monitor unit, video signal is by through video filtering
It is encoded to the video of H.264 form with coding circuit plate by hardware, is delayed by one section through chronotron simultaneously
Time；Video analysis unit preserves the copy of the video in this section of delay time in it caches；At this time delay
Between, if there is situation violating the regulations, then video analysis unit is according to the moment occurred violating the regulations, to through above-mentioned video
Copy decomposed frame by frame in the above-mentioned moment, and selected wherein to obtain license plate image through image processing algorithm
These some two field pictures are together protected by the most some images together with the video without above-mentioned coding from video camera
It is stored to video storage unit.
Vehicle License Plate Recognition System for peccancy detection the most according to claim 1, it is characterised in that institute
State Vehicle License Plate Recognition System and also include lighting unit.
Vehicle License Plate Recognition System for peccancy detection the most according to claim 1, it is characterised in that institute
State annular and can also is that Else Rule or irregular shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510038020.2A CN104537844B (en) | 2015-01-26 | 2015-01-26 | Vehicle License Plate Recognition System for peccancy detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510038020.2A CN104537844B (en) | 2015-01-26 | 2015-01-26 | Vehicle License Plate Recognition System for peccancy detection |
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| Publication Number | Publication Date |
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| CN104537844A CN104537844A (en) | 2015-04-22 |
| CN104537844B true CN104537844B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510038020.2A Active CN104537844B (en) | 2015-01-26 | 2015-01-26 | Vehicle License Plate Recognition System for peccancy detection |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106683400A (en) * | 2015-11-11 | 2017-05-17 | 上海安防电子股份有限公司 | Method and a system for obtaining evidence by capturing vehicles at traffic crossing under panoramic video detection |
| CN109035805B (en) * | 2018-09-21 | 2021-03-02 | 深圳市九洲电器有限公司 | Intelligent recognition method and device for license plate number |
| CN111223302B (en) * | 2018-11-23 | 2021-12-03 | 明创能源股份有限公司 | External coordinate real-time three-dimensional road condition auxiliary device for mobile carrier and system |
| CN110533921B (en) * | 2019-08-06 | 2021-06-18 | 北京万集科技股份有限公司 | Triggering snapshot method and system for vehicle |
| CN112233421A (en) * | 2020-10-15 | 2021-01-15 | 胡歆柯 | Intelligent city intelligent traffic monitoring system based on machine vision |
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| CN201174173Y (en) * | 2007-10-26 | 2008-12-31 | 杜剑华 | Network digital image taking instrument for going through red light |
| CN102521992A (en) * | 2011-12-14 | 2012-06-27 | 中盟智能科技（苏州）有限公司 | Apparatus possessing digital enforcement and signal lamp control |
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| CN104299419A (en) * | 2014-10-28 | 2015-01-21 | 合肥指南针电子科技有限责任公司 | High-definition snapshot information system and method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6970102B2 (en) * | 2003-05-05 | 2005-11-29 | Transol Pty Ltd | Traffic violation detection, recording and evidence processing system |
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Patent Citations (4)
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|---|---|---|---|---|
| CN201174173Y (en) * | 2007-10-26 | 2008-12-31 | 杜剑华 | Network digital image taking instrument for going through red light |
| CN102521992A (en) * | 2011-12-14 | 2012-06-27 | 中盟智能科技（苏州）有限公司 | Apparatus possessing digital enforcement and signal lamp control |
| CN204087489U (en) * | 2014-09-17 | 2015-01-07 | 深圳市林润实业有限公司 | A kind of digital-scroll technique high-definition electronic police grasp shoot device |
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Inventor after: Li Peng Inventor before: Liu Dong |
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Effective date of registration: 20160623 Address after: 276800 Shandong Province, Rizhao City Donggang district four North Road and Yanzhou Road intersection Applicant after: SHANDON LINGXIN INFORMATION TECHNOLOGY CO.,LTD. Address before: 610041, No. 30, No. 1, building 1, 2, No. 177, Tianfu Road, Chengdu hi tech Zone, Sichuan Applicant before: CHENGFU MEILIAN WEIZHI TECHNOLOGY CO., LTD. |
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Effective date of registration: 20191224 Address after: Room 3105, floor 31, building 6, Shun Tai Plaza, No. 2000, Shunhua Road, high tech Zone, Jinan City, Shandong Province Patentee after: Shandong Shunyuan Taishan Finance Leasing Co., Ltd. Address before: 276800 Shandong Province, Rizhao City Donggang district four North Road and Yanzhou Road intersection Patentee before: Shandong Leadthing Information Science and Technology Co., Ltd. |
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Effective date of registration: 20220321 Address after: 276800 intersection of Beiyuan 4th Road and Yanzhou Road, Donggang District, Rizhao City, Shandong Province Patentee after: Shandong Leadthing Information Science and Technology Co.,Ltd. Address before: Room 3105, 31 / F, building 6, Shuntai Plaza, 2000 Shunhua Road, high tech Zone, Jinan City, Shandong Province Patentee before: Shandong Shunyuan Taishan Finance Leasing Co.,Ltd. |
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