CN205810112U - Vehicle License Plate Recognition System - Google Patents
Vehicle License Plate Recognition System Download PDFInfo
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- CN205810112U CN205810112U CN201620481228.1U CN201620481228U CN205810112U CN 205810112 U CN205810112 U CN 205810112U CN 201620481228 U CN201620481228 U CN 201620481228U CN 205810112 U CN205810112 U CN 205810112U
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Abstract
The utility model discloses a kind of Vehicle License Plate Recognition System, including Car license recognition server and two or more Car license recognition instrument, described Car license recognition instrument is arranged on entrance passage or the Difference angles of exit passageway of vehicle, and described Car license recognition server is connected with described Car license recognition instrument；Described Car license recognition server, for from multiple license plate identification datas of described Car license recognition instrument, filters out the car plate meeting pre-conditioned license plate identification data as Current vehicle.This utility model solves the problem that vehicle is the most just having influence on the recognition result of Car license recognition instrument when access way due to car plate angle such that it is able to can recognize car plate under the car plate angle corresponding to arbitrary vehicle, improve Car license recognition rate.
Description
Technical field
This utility model relates to communication technical field, particularly relates to Vehicle License Plate Recognition System.
Background technology
Existing parking lot the most only arranges a Car license recognition instrument, meanwhile, in prior art, one on vehicles while passing passage
Individual Car license recognition instrument is typically only capable to identify the car plate of vehicle in the range of specified angle, and if vehicles passing in and out is triggering Car license recognition instrument
Time within when carrying out Car license recognition, correspondence is in the angular range specified by Car license recognition instrument, then Car license recognition instrument will be unable to
Identify or correctly recognize the car plate of vehicle, and then the parking management of vehicle cannot be normally carried out.
Utility model content
Main purpose of the present utility model is to provide a kind of Vehicle License Plate Recognition System, it is intended to solve in prior art, car plate
Identifier does not adapt to the current angle of vehicles while passing and the technical problem of None-identified vehicle license plate.
For achieving the above object, this utility model provides a kind of Vehicle License Plate Recognition System, and described Vehicle License Plate Recognition System includes car
Board identification server and two or more Car license recognition instrument, described Car license recognition instrument is arranged on the entrance passage of vehicle
Or the Difference angles of exit passageway, described Car license recognition server is connected with described Car license recognition instrument；Described Car license recognition
Server, for from multiple license plate identification datas of described Car license recognition instrument, filters out and meets pre-conditioned Car license recognition number
According to the car plate as Current vehicle.
Preferably, described Car license recognition instrument includes: taking module, identification module, and described taking module passes through video image
Output interface is connected with the video image input interface of described identification module；
Wherein, described taking module, for shooting by described entrance passage or the vehicle license plate of exit passageway, obtain car
Board image, and by video image output interface, by the output of described license plate image to described identification module；Described identification module,
For receiving described car plate picture by video image input interface, and described license plate image is carried out character recognition, obtain car
Board identification data；
Described Car license recognition server includes: acquisition module, judge module, screening module, described acquisition module is with described
Judge module connects, and described judge module is connected with described screening module；
Wherein, described acquisition module, it is used for obtaining described in the license plate identification data of all Car license recognition instrument output extremely and sentences
Disconnected module；Described judge module, for judging that corresponding judged result the most effectively and is exported extremely by described license plate identification data
Described screening module；Described screening module, is used for when the judged result of described judge module is two or more for existing
Described license plate identification data effective and inconsistent time, from effective described license plate identification data, filter out meet pre-conditioned
License plate identification data as the car plate of Current vehicle.
Preferably, described screening module includes: authority judging unit, the first car plate identifying unit, and described authority judges single
First and described first car plate identifying unit is connected；
Described authority judging unit, if being used for the judged result of described judge module for there is two or more institute
State license plate identification data effective and inconsistent, then judge whether effective described license plate identification data exists having of correspondence logical
The mandate car plate of row authority, and by corresponding judged result output to described first car plate identifying unit；
Described first car plate identifying unit, if the judged result for described authority judging unit is to there is corresponding having
The mandate car plate of right of access, then using described mandate car plate as the car plate of Current vehicle.
Preferably, described screening module includes: matching judgment unit, the second car plate identifying unit, described matching judgment list
First and described second car plate identifying unit is connected；
Described matching judgment unit, for when vehicle appears on the scene, if the judged result of described judge module is for existing two
Or plural described license plate identification data is effective and inconsistent, then judge in effective described license plate identification data the fullest
The license plate identification data that foot appears on the scene mates with the license plate identification data of admission, and by corresponding judged result output to described second
Car plate identifying unit；
Described second car plate identifying unit, if the judged result for described matching judgment unit is the arbitrary car plate appeared on the scene
Identify that data match with arbitrary license plate identification data of admission, then described license plate identification data correspondence matched is as working as
The car plate of vehicle in front.
Preferably, described Car license recognition instrument also includes: angle-determining module, credibility generation module, described angle-determining
Module is connected with described credibility generation module, and described angle-determining module is connected with described taking module；
Described angle-determining module, for according to described license plate image, determines vehicle forward direction and described Car license recognition
Angle between the shooting direction of instrument, and by the output of described angle to described credibility generation module；
Described credibility generation module, for according to described angle, default folder determined by described angle-determining module
Angle and credibility synopsis, generate the credibility of described license plate identification data.
Preferably, described acquisition module is additionally operable to: obtain all Car license recognition instrument license plate identification data and described can
The credibility of the described license plate identification data that reliability generation module is generated；
Described screening module specifically for: when the judged result of described judge module is for existing two or more institute
State license plate identification data effective and inconsistent time, credible by license plate identification data described in effective described license plate identification data
Spend the highest license plate identification data car plate as Current vehicle.
Preferably, described judge module includes: detector unit, invalid identifying unit, effective identifying unit, described detection list
Unit is connected with described invalid identifying unit, described effective identifying unit respectively；
Whether described detector unit, being used for detecting described license plate identification data is empty, and testing result correspondence sent extremely
Described invalid identifying unit, described effective identifying unit；
Described invalid identifying unit, if the testing result being used for described detector unit is described license plate identification data is sky,
Then judge that described license plate identification data is invalid；
Described effective identifying unit, if the testing result for described detector unit is that described license plate identification data is not for sky
And meet the identification form of normal car plate, then judge that described license plate identification data is effective.
Preferably, described Car license recognition server also includes: car plate determines that module, described car plate determine that module is sentenced with described
Disconnected module connects；
Described car plate determines module, for when the judged result of described judge module is for existing two or more institute
State license plate identification data effective and consistent time, using arbitrary described license plate identification data as the car plate of Current vehicle.
Preferably, described Car license recognition server also includes: prompting module, and described prompting module is with described judge module even
Connect；
Described prompting module, for when the judged result of described judge module is not for exist effective license plate identification data
Time, generate prompting message, carry out respective handling for reminding user.
This utility model uses two or more Car license recognition instrument to carry out the vehicle entering passage or exit passageway
Car license recognition such that it is able to ensure at least one Car license recognition instrument the car plate of vehicle can be carried out normal angled in the range of car
Board identification.Additionally, this utility model solves the license plate identification data how to be identified from multiple Car license recognition instrument the most further
Middle selection meets the pre-conditioned license plate identification data car plate as Current vehicle, thus improves Car license recognition rate.
Accompanying drawing explanation
Fig. 1 is the basic framework schematic diagram of this utility model Vehicle License Plate Recognition System one embodiment；
Fig. 2 is the high-level schematic functional block diagram of Car license recognition instrument first embodiment in this utility model Vehicle License Plate Recognition System；
Fig. 3 is the functional module signal of Car license recognition server first embodiment in this utility model Vehicle License Plate Recognition System
Figure；
Fig. 4 is the refinement high-level schematic functional block diagram screening module first embodiment in Fig. 3；
Fig. 5 is the refinement high-level schematic functional block diagram screening module the second embodiment in Fig. 3；
Fig. 6 is the high-level schematic functional block diagram of Car license recognition instrument the second embodiment in this utility model Vehicle License Plate Recognition System；
Fig. 7 is the refinement high-level schematic functional block diagram of judge module one embodiment in Fig. 3；
Fig. 8 is the functional module signal of Car license recognition server the second embodiment in this utility model Vehicle License Plate Recognition System
Figure；
Fig. 9 is the functional module signal of Car license recognition server the 3rd embodiment in this utility model Vehicle License Plate Recognition System
Figure.
The realization of this utility model purpose, functional characteristics and advantage will in conjunction with the embodiments, are described further referring to the drawings.
Detailed description of the invention
Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this reality
With novel.
With reference to the basic framework schematic diagram that Fig. 1, Fig. 1 are this utility model Vehicle License Plate Recognition System one embodiment.The present embodiment
In, Vehicle License Plate Recognition System includes Car license recognition server 10 and two or more Car license recognition instrument 20, Car license recognition
Instrument 20 is arranged on entrance passage or the Difference angles of exit passageway of vehicle, Car license recognition server 10 and Car license recognition instrument
20 connect.Car license recognition server 10, for from multiple license plate identification datas of Car license recognition instrument 20, filters out to meet and presets
The license plate identification data of condition is as the car plate of Current vehicle.
It is that in this utility model Vehicle License Plate Recognition System, the functional module of Car license recognition instrument first embodiment is shown with reference to Fig. 2, Fig. 2
It is intended to.Car license recognition instrument 20 includes: taking module 201, identification module 202, and wherein, taking module 201 is defeated by video image
Outgoing interface is connected with the video image input interface of identification module 202.
In the present embodiment, taking module 201 by entering passage or the vehicle license plate of exit passageway, obtains car for shooting
Board image, and by video image output interface, license plate image is exported to identification module 202；Identification module 202 is used for passing through
Video image input interface receives car plate picture, and license plate image is carried out character recognition, obtains license plate identification data；
It is the function mould of Car license recognition server first embodiment in this utility model Vehicle License Plate Recognition System with reference to Fig. 3, Fig. 3
Block schematic diagram.In the present embodiment, Car license recognition server 10 includes: acquisition module 101, judge module 102, screening module 103,
Wherein, acquisition module 101 is connected with judge module 102, it is judged that module 102 is connected with screening module 103；
In the present embodiment, acquisition module 101 is for obtaining the license plate identification data of all Car license recognition instrument 20 and exporting extremely
Judge module 102；Judge module 102 is for judging that license plate identification data is the most effectively and by corresponding judged result output to sieve
Modeling block 103；Screening module 103 is for knowing for there is two or more car plate when the judged result of judge module 102
Other data effective and inconsistent time, from effective license plate identification data, filter out and meet pre-conditioned license plate identification data
Car plate as Current vehicle.
In the present embodiment, Car license recognition instrument 20, specifically for identifying the car plate of vehicle, obtains license plate identification data, wherein,
Concrete recognition method for car plate does not limits.When vehicle triggers Car license recognition instrument 20 at access way, the car plate of vehicle is known
Time other, acquisition module 101 obtains the license plate identification data of correspondence.Need it is further noted that the car plate in the present embodiment is known
Other data both can be vehicle enter field data, it is also possible to be vehicle go out field data, with specific reference to the actual feelings of vehicles while passing
Depending on condition.
In the present embodiment, multiple Car license recognition instrument are to there being multiple license plate identification data, thus also need to further logarithm
According to effectiveness judge.
In the present embodiment, owing to many factors affects, and then license plate identification data may be caused invalid.Such as, vehicle without
The car plate angle of car plate or vehicle the most just, thus causes None-identified car plate, accordingly, it would be desirable to reject this type of invalid identification knot
Really.Additionally, the processing mode for invalid license plate identification data does not limits in the present embodiment, set with specific reference to being actually needed
Put, such as, when vehicle is without car plate, transfer to marching into the arena or appearing on the scene of artificial treatment vehicle.
In the present embodiment, although with two or more Car license recognition instrument 20, the vehicle of access way is carried out car plate
Identify such that it is able to ensure that at least one Car license recognition instrument can carry out the car plate in the range of normal angled and know the car plate of vehicle
Not, but also create new problem: from multiple license plate recognition result, how to choose the car plate of Current vehicle simultaneously.
In the present embodiment, when the judged result of judge module 102 is for existing two or more described Car license recognition
Data effective and inconsistent time, screening module 103 from effective described license plate identification data, filter out meet pre-conditioned
License plate identification data is as the car plate of Current vehicle.In the present embodiment, the setting for default screening conditions does not limits, meanwhile,
Screening conditions both can be single screening conditions, it is also possible to is multiplex screening condition.Furthermore, it is necessary to further illustrate, car
Screening conditions when screening conditions when marching into the arena can appear on the scene as vehicle too, and screening conditions when vehicle appears on the scene are also
Can also serve as screening conditions when vehicle is marched into the arena.In addition, it is necessary to further illustrate, in the present embodiment, when all cars
Board identification data effectively and the most consistent time when identical (namely consistent), then using this license plate identification data as the car of Current vehicle
Board.
In the present embodiment, by using two or more Car license recognition instrument 20 to entering passage or the car of exit passageway
Carry out Car license recognition such that it is able to ensure that at least one Car license recognition instrument 20 can carry out normal angled model to the car plate of vehicle
Enclose interior Car license recognition.Additionally, solve further how from the license plate identification data that multiple Car license recognition instrument 20 are identified
Select to meet the pre-conditioned license plate identification data car plate as Current vehicle, thus improve Car license recognition rate.
It it is the refinement high-level schematic functional block diagram screening module first embodiment in Fig. 3 with reference to Fig. 4, Fig. 4.Based on above-mentioned enforcement
Example, in the present embodiment, above-mentioned screening module 103 includes: authority judging unit the 1031, first car plate identifying unit 1032, authority
Judging unit 1031 is connected with the first car plate identifying unit 1032.
Authority judging unit 1031, if being used for the judged result of judge module 102 for there is two or more car
Board identification data are effective and inconsistent, then judge whether to exist in effective license plate identification data the right of access that has of correspondence
Authorize car plate, and corresponding judged result is exported to the first car plate identifying unit 1032；
First car plate identifying unit 1032, if the judged result for authority judging unit 1031 is to there is corresponding having
The mandate car plate of right of access, then will authorize the car plate car plate as Current vehicle.
In the actually used situation of multiple Car license recognition instrument 20, almost can't occur existing two or more
The special case that described license plate identification data is effective and inconsistent.In the present embodiment, for above-mentioned special case, by default screening conditions,
From two or more effective license plate identification datas, select to meet there is the mandate car plate of right of access as current vehicle
Car plate.
Such as, having tri-Car license recognition instrument of A, B, C that Current vehicle carries out Car license recognition respectively, corresponding recognition result divides
Not Wei license plate number 1, license plate number 2, license plate number 3, when these three license plate numbers exist there is the mandate car plate of right of access time, such as
License plate number 3 is for authorizing car plate, then using license plate number 3 as the car plate of Current vehicle.
Car license recognition rate corresponds to a kind of probability, and therefore, the identification probability even for car plate is not 100%, such as
99.99%, also it is equally to think that Car license recognition is successful.Namely in the present embodiment, will have the mandate of right of access
Car plate can reach a certain confidence values, such as the car plate of Current vehicle, the Car license recognition rate corresponding to such situation
Reach 99%, such that it is able to the Car license recognition thought under such situation is successful.
It it is the refinement high-level schematic functional block diagram screening module the second embodiment in Fig. 3 with reference to Fig. 5, Fig. 5.Based on above-mentioned enforcement
Example, in the present embodiment, above-mentioned screening module 103 includes: matching judgment unit the 1033, second car plate identifying unit 1034, coupling
Judging unit 1033 is connected with the second car plate identifying unit 1034.
Matching judgment unit 1033, for when vehicle appears on the scene, if the judged result of judge module 102 for existence two or
Plural license plate identification data is effective and inconsistent, then judge whether meet the car appeared on the scene in effective license plate identification data
Board identification data are mated with the license plate identification data of admission, and export corresponding judged result to the second car plate identifying unit
1034；
Second car plate identifying unit 1034, if the judged result for matching judgment unit 1033 is the arbitrary car plate appeared on the scene
Identify that data match with arbitrary license plate identification data of admission, then license plate identification data correspondence matched is as current vehicle
Car plate.
Such as, there are tri-Car license recognition instrument of A, B, C that Current vehicle carries out Car license recognition respectively, Current vehicle admission time institute
Corresponding recognition result is respectively license plate number 1, license plate number 2, license plate number 3, and recognition result corresponding when Current vehicle appears on the scene
Be respectively license plate number 4, license plate number 5, license plate number 6, then by appear on the scene time license plate number 4, license plate number 5, license plate number 6 the most successively with enter
License plate number 1 during field, license plate number 2, license plate number 3 carry out the coupling of comparison one by one, if the match is successful in any comparison, such as car plate
Numbers 5 the match is successful (namely license plate number is identical) with license plate number 1 comparison, then using license plate number 5 (or license plate number 1) as Current vehicle
Car plate.
It is that in this utility model Vehicle License Plate Recognition System, the functional module of Car license recognition instrument the second embodiment is shown with reference to Fig. 6, Fig. 6
It is intended to.Based on above-described embodiment, in the present embodiment, Car license recognition instrument 20 also includes: angle-determining module 203, credibility generate
Module 204, wherein, angle-determining module 203 is connected with credibility generation module 204, angle-determining module 203 and taking module
201 connect.
Angle-determining module 203, for according to license plate image, determines the shooting side of vehicle forward direction and Car license recognition instrument
Angle between to, and angle is exported to credibility generation module 204；
Credibility generation module 204, for according to angle determined by angle-determining module 203, default angle with can
Reliability synopsis, generates the credibility of license plate identification data.
Generally, the license plate image captured when photographic head is just to car plate is that comparison is upright, namely due to shooting angle
Normally and do not produce anamorphose, now, identify that the credibility of the car plate data obtained is the highest.And if vehicle forward direction and car
There is angle between the shooting direction of board identifier, then can cause the license plate image deformation of shooting, and then have influence on Car license recognition
The accuracy of data, namely the credibility corresponding to license plate identification data is relatively low.
In the present embodiment, for according to license plate image, determine vehicle forward direction and Car license recognition instrument shooting direction it
Between the mode of angle do not limit, such as set up the mathematical model of license plate image and angle, and then determine that different license plate image institute is right
The angle answered, finally further according to default angle and credibility synopsis, generates the credibility of corresponding license plate identification data, such as table
Shown in 1.
Table 1
| Angle | 0～10 degree | 10～30 degree | 30～50 degree | 5～70 degree | 70～90 degree |
| Credibility | 99% | 90% | 80% | 70% | 50% |
Further alternative, in this utility model Vehicle License Plate Recognition System one embodiment, above-mentioned acquisition module 101 is also used
In: obtain the license plate identification data of all Car license recognition instrument 20 and Car license recognition number that credibility generation module 204 is generated
According to credibility；
Screening module 103 specifically for: when the judged result of judge module 102 is for existing two or more car plate
Identify data effective and inconsistent time, the highest for the credibility of license plate identification data in effective license plate identification data car plate is known
Other data are as the car plate of Current vehicle.
In the present embodiment, Car license recognition instrument 20 is while identification obtains license plate identification data, moreover it is possible to provide Car license recognition
The credibility of data.Such as, the angle that Car license recognition instrument 20 shoots car plate is normal, the most with a high credibility.Such as, Car license recognition instrument 20
The angle between shooting direction and vehicle heading according to Car license recognition instrument, sets corresponding credibility, and such as, angle is little
In 10 degree, then corresponding credibility may be configured as 80%, and angle is more than 90 degree, then corresponding credibility may be configured as 0.
Such as, having tri-Car license recognition instrument of A, B, C that Current vehicle carries out Car license recognition respectively, corresponding recognition result divides
Not Wei license plate number 1, credibility 80%, license plate number 2, credibility 90%, license plate number 3, credibility 98%, using license plate number 3 as
The car plate of Current vehicle.
It is the refinement high-level schematic functional block diagram of judge module one embodiment in Fig. 3 with reference to Fig. 7, Fig. 7.In the present embodiment, on
State judge module 102 to include: detector unit 1021, invalid identifying unit 1022, effective identifying unit 1023, detector unit 1021
It is connected with invalid identifying unit 1022, effective identifying unit 1023 respectively.
In the present embodiment, whether detector unit 1021 is used for detecting license plate identification data is empty, and testing result is corresponding
Send to invalid identifying unit 1022, effective identifying unit 1023；If invalid identifying unit 1022 is for detector unit 1021
Testing result be license plate identification data be empty, then judge that license plate identification data is invalid；If effectively identifying unit 1023 is for detection
The testing result of unit 1021 is that license plate identification data is not empty and meets the identification form of normal car plate, then judge Car license recognition
Data are effective.
In the present embodiment, Vehicle License Plate Recognition System is after the license plate identification data getting all Car license recognition instrument, and it is right to need
License plate identification data carries out validation checking and judgement.
Such as, have tri-Car license recognition instrument of A, B, C that Current vehicle carries out Car license recognition respectively, wherein, identifier A due to
Angle problem None-identified is to car plate, namely recognition result is empty, and identifier B is also due to angle problem cannot completely recognize
Car plate, than if any several characters on license plate None-identifieds, namely is unsatisfactory for the identification form of normal car plate, and the identification of identifier C
Data meet the identification form of normal car plate, then the identification data invalid of identifier A, B, and the identification data of identifier C have
Effect.
Optionally, as shown in Figure 8, Car license recognition server 10 also includes: car plate determines module 104, and car plate determines module
104 are connected with judge module 102.
In the present embodiment, car plate determines that module 104 is for when the judged result of judge module 102 is for existing two or two
Above license plate identification data effective and consistent time, using arbitrary license plate identification data as the car plate of Current vehicle.
Such as, having tri-Car license recognition instrument of A, B, C that Current vehicle carries out Car license recognition respectively, corresponding recognition result divides
Not Wei license plate number 1, license plate number 2, license plate number 3, and license plate number 1,3 is identical, then using license plate number 1 or license plate number 3 as Current vehicle
Car plate.
Optionally, as it is shown in figure 9, Car license recognition server 10 also includes: prompting module 105, prompting module 105 and judgement
Module 102 connects.
In the present embodiment, prompting module 105 is for knowing for there is not effective car plate when the judged result of judge module 102
During other data, generate prompting message, carry out respective handling for reminding user.Such as send corresponding alarm song or flicker is aobvious
Show information warning etc..
These are only preferred embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model, every
Utilize equivalent structure or equivalence flow process conversion that this utility model description and accompanying drawing content made, or be directly or indirectly used in
Other relevant technical fields, are the most in like manner included in scope of patent protection of the present utility model.
Claims (9)
1. a Vehicle License Plate Recognition System, it is characterised in that described Vehicle License Plate Recognition System includes Car license recognition server and two
Or plural Car license recognition instrument, what described Car license recognition instrument was arranged on vehicle enters passage or the different angles of exit passageway
Position, described Car license recognition server is connected with described Car license recognition instrument；Described Car license recognition server is for from described car plate
In multiple license plate identification datas of identifier, filter out the car meeting pre-conditioned license plate identification data as Current vehicle
Board.
2. Vehicle License Plate Recognition System as claimed in claim 1, it is characterised in that described Car license recognition instrument includes: taking module, knowledge
Other module, described taking module is connected with the video image input interface of described identification module by video image output interface；
Wherein, described taking module, for shooting by described entrance passage or the vehicle license plate of exit passageway, obtain car plate figure
Picture, and by video image output interface, by the output of described license plate image to described identification module；Described identification module, is used for
Receive described car plate picture by video image input interface, and described license plate image is carried out character recognition, obtain car plate and know
Other data；
Described Car license recognition server includes: acquisition module, judge module, screening module, described acquisition module and described judgement
Module connects, and described judge module is connected with described screening module；
Wherein, described acquisition module, for obtaining the license plate identification data of all Car license recognition instrument and exporting to described judgement mould
Block；Described judge module, for judging that described license plate identification data is the most effectively and by corresponding judged result output to described
Screening module；Described screening module, is used for when the judged result of described judge module is two or more described for existing
License plate identification data effective and inconsistent time, from effective described license plate identification data, filter out and meet pre-conditioned car
Board identification data are as the car plate of Current vehicle.
3. Vehicle License Plate Recognition System as claimed in claim 2, it is characterised in that described screening module includes: authority judging unit,
First car plate identifying unit, described authority judging unit is connected with described first car plate identifying unit；
Described authority judging unit, if being used for the judged result of described judge module for there is two or more described car
Board identification data are effective and inconsistent, then judge whether to exist in effective described license plate identification data correspondence has right-of-way
The mandate car plate of limit, and by corresponding judged result output to described first car plate identifying unit；
Described first car plate identifying unit, if the judged result for described authority judging unit is that having of existence correspondence is current
The mandate car plate of authority, then using described mandate car plate as the car plate of Current vehicle.
4. Vehicle License Plate Recognition System as claimed in claim 2, it is characterised in that described screening module includes: matching judgment unit,
Second car plate identifying unit, described matching judgment unit is connected with described second car plate identifying unit；
Described matching judgment unit, for when vehicle appears on the scene, if the judged result of described judge module is for existing two or two
Individual above described license plate identification data is effective and inconsistent, then judge whether meet in effective described license plate identification data
The license plate identification data of field mates with the license plate identification data of admission, and by corresponding judged result output to described second car plate
Identifying unit；
Described second car plate identifying unit, if the judged result for described matching judgment unit is the arbitrary Car license recognition appeared on the scene
Data match with arbitrary license plate identification data of admission, then described license plate identification data correspondence matched is as current vehicle
Car plate.
5. Vehicle License Plate Recognition System as claimed in claim 2, it is characterised in that described Car license recognition instrument also includes: angle-determining
Module, credibility generation module, described angle-determining module is connected with described credibility generation module, described angle-determining module
It is connected with described taking module；
Described angle-determining module, for according to described license plate image, determines vehicle forward direction and described Car license recognition instrument
Angle between shooting direction, and by the output of described angle to described credibility generation module；
Described credibility generation module, for according to described angle determined by described angle-determining module, default angle with
Credibility synopsis, generates the credibility of described license plate identification data.
6. Vehicle License Plate Recognition System as claimed in claim 5, it is characterised in that
Described acquisition module is additionally operable to: obtain the license plate identification data of all Car license recognition instrument and described credibility generation module
The credibility of the described license plate identification data generated；
Described screening module specifically for: when the judged result of described judge module is for existing two or more described car
Board identification data effective and inconsistent time, by the credibility of license plate identification data described in effective described license plate identification data
High license plate identification data is as the car plate of Current vehicle.
7. the Vehicle License Plate Recognition System as according to any one of claim 2-6, it is characterised in that described judge module includes: inspection
Survey unit, invalid identifying unit, effective identifying unit, described detector unit respectively with described invalid identifying unit, described effectively
Identifying unit connects；
Whether described detector unit, being used for detecting described license plate identification data is empty, and send testing result correspondence to described
Invalid identifying unit, described effective identifying unit；
Described invalid identifying unit, if the testing result being used for described detector unit is described license plate identification data is sky, then sentences
Fixed described license plate identification data is invalid；
Described effective identifying unit, if the testing result for described detector unit is that described license plate identification data is not for empty and full
The identification form of the normal car plate of foot, then judge that described license plate identification data is effective.
8. Vehicle License Plate Recognition System as claimed in claim 7, it is characterised in that described Car license recognition server also includes: car plate
Determine that module, described car plate determine that module is connected with described judge module；
Described car plate determines module, for when the judged result of described judge module is for existing two or more described car
Board identification data effective and consistent time, using arbitrary described license plate identification data as the car plate of Current vehicle.
9. Vehicle License Plate Recognition System as claimed in claim 7, it is characterised in that described Car license recognition server also includes: remind
Module, described prompting module is connected with described judge module；
Described prompting module, for when the judged result of described judge module is not for existing effective license plate identification data, raw
Become prompting message, carry out respective handling for reminding user.
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| CN201620481228.1U CN205810112U (en) | 2016-05-24 | 2016-05-24 | Vehicle License Plate Recognition System |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN107424413A (en) * | 2016-05-24 | 2017-12-01 | 北京奥斯达兴业科技有限公司 | Licence plate recognition method and system |
| CN106530739A (en) * | 2016-12-30 | 2017-03-22 | 伟龙金溢科技（深圳）有限公司 | License plate recognition method, device and system thereof based on multiple camera device |
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| CN106971557A (en) * | 2017-05-18 | 2017-07-21 | 北京宏恺安营停车管理有限公司 | A kind of vehicle identification method and system |
| CN107393308A (en) * | 2017-08-28 | 2017-11-24 | 广东西奥物联网科技股份有限公司 | A kind of method, apparatus and managing system of car parking for identifying car plate |
| CN107964895A (en) * | 2017-11-16 | 2018-04-27 | 西安艾润物联网技术服务有限责任公司 | Banister control method, device and computer-readable recording medium |
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| CN110070723A (en) * | 2018-01-23 | 2019-07-30 | 浙江宇视科技有限公司 | The method, apparatus and system of entrance vehicle identification |
| CN111179446A (en) * | 2020-01-06 | 2020-05-19 | 北京筑梦园科技有限公司 | Parking payment method, server and parking charge processing system |
| CN111862622A (en) * | 2020-07-27 | 2020-10-30 | 上海福赛特智能科技有限公司 | Device and method for improving identification accuracy of license plate at lane entrance |
| CN111862622B (en) * | 2020-07-27 | 2022-03-04 | 上海福赛特智能科技有限公司 | Device and method for improving identification accuracy of license plate at lane entrance |
| CN113673527A (en) * | 2021-07-28 | 2021-11-19 | 成都恒创新星科技有限公司 | License plate recognition method and system |
| CN113673527B (en) * | 2021-07-28 | 2023-08-08 | 成都恒创新星科技有限公司 | License plate recognition method and system |
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