CN204155449U - A kind of Car license recognition comparison high-definition camera and supervisory system - Google Patents

A kind of Car license recognition comparison high-definition camera and supervisory system Download PDF

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CN204155449U
CN204155449U CN201420508812.2U CN201420508812U CN204155449U CN 204155449 U CN204155449 U CN 204155449U CN 201420508812 U CN201420508812 U CN 201420508812U CN 204155449 U CN204155449 U CN 204155449U
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module
car
definition camera
identified
vehicle
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陈军
侯丹
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Cloud Vision Video Technology (Shanghai) Co., Ltd.
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SHANGHAI ZHIDASHANG INVESTMENT MANAGEMENT PARTNERSHIP ENTERPRISE
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Abstract

The utility model provides a kind of Car license recognition comparison high-definition camera and supervisory system, comprising: high definition video collecting module, data communication module, HD video compression module, vehicle detection and candid photograph module and Car license recognition module; Further, car plate comparing module is also comprised.The high-definition camera of Car license recognition function that what the utility model provided have, directly in high-definition camera, complete Car license recognition function, and be sent to centring system, not only increase system response time, and can directly search for from the license plate recognition result of centring system record, obtain the travel route of a certain vehicle, thus valuable clue can be obtained fast; In high-definition camera, complete car plate comparison, be convenient to monitor target vehicle, tackle.The utility model also provides a kind of supervisory system comprising the high-definition camera with Car license recognition function, reduces complexity and the configuration requirement of system, thus the overall cost of Vehicle License Plate Recognition System is effectively controlled.

Description

A kind of Car license recognition comparison high-definition camera and supervisory system
Technical field
The utility model relates to video monitoring, video intelligent analysis field, particularly relates to a kind of Car license recognition comparison high-definition camera and supervisory system.
Background technology
Current video surveillance applications is among flourish application process, and the application of the front-end equipments such as high-definition camera is also in continuous expansion.Under the background that anti-terrorism stability maintenance and reinforcement social safety are taken precautions against, license plate recognition technology has urgent demand in fields such as municipal intelligent traffic, parking lot management, public security bayonet, freeway toll stations.
In existing Car license recognition application, the pre-buried ground induction coil of general employing, infrared detection, radar detection technique carry out vehicle detection and toggling camera is captured, principal and subordinate's two video cameras are needed to same track, video camera only completes video sampling and compressing, video capture, by being arranged on the industrial computer at Car license recognition scene or center-side equipment to complete Car license recognition, comparison process.
This type of system architecture is complicated, and construction cost is high, and difficulty of construction is large, poor stability, is difficult to safeguard.
For this reason, be necessary to provide a kind of high-definition camera and the supervisory system with Car license recognition function, Car license recognition, comparison is directly completed in high-definition camera, and centring system will be transferred to by vehicle image in a large number, thus make centring system without the need to carrying out a large amount of Car license recognition comparison process, only need manage these video cameras and related data.
Summary of the invention
The purpose of this utility model is to provide a kind of high-definition camera with Car license recognition function, Car license recognition is completed in high-definition camera, and vehicle image to be identified, license plate recognition result are transferred to host computer or centring system, and will centring system is not transferred to carry out Car license recognition, to improve system response time by vehicle image in a large number; Simultaneously when needing the travel route obtaining a certain vehicle, can directly search for from the license plate recognition result of centring system record, and ground checking monitoring video of need not wasting time and energy, thus valuable clue can be obtained fast.
The high-definition camera of Car license recognition function that what the utility model provided have, also comprises the car plate comparing module of comparing with target vehicle information, when comparison is consistent, sends a warning; Be convenient to monitor target vehicle, tackle.
Another object of the present utility model is to provide a kind of supervisory system, comprise the high-definition camera that at least one has Car license recognition function, in high-definition camera, complete Car license recognition, comparison function, reduce centring system complexity, make centring system be easy to extendability; Directly can search for from the license plate recognition result of centring system record simultaneously, obtain the travel route of a certain vehicle, thus valuable clue can be obtained fast; If when the high-definition camera with Car license recognition function is multiple stage, different target vehicle information can be transmitted to the different high-definition cameras with Car license recognition function, the monitored object of control point can be set targetedly according to different monitoring demands, make the target vehicle data that the comparison of different monitoring points is relevant, thus improve efficiency and the dirigibility of supervisory system.
The utility model provides a kind of high-definition camera with Car license recognition function, comprising:
High definition video collecting module, for the digital collection of high clear video image;
HD video compression module, for carrying out compressed encoding to high clear video image;
Whether vehicle detection and candid photograph module, have vehicle for detecting from high clear video image successive frame and capture vehicle image to be identified;
Data communication module, transmits for the data had between the high-definition camera of Car license recognition function and centring system;
Car license recognition module, identifies car plate data in vehicle image to be identified, sends vehicle image to be identified and license plate recognition result by data communication module to centring system;
Described high definition video collecting module, described vehicle detection and candid photograph module, described Car license recognition module are connected successively with described data communication module, and described HD video compression module is connected with described data communication module with described high definition video collecting module respectively.
The high-definition camera of Car license recognition function that what the utility model provided have, directly detect vehicle by video analysis and trigger shooting, Car license recognition function is directly completed in high-definition camera, and host computer will be transferred to or centring system identifies by a large amount of vehicle image to be identified, Car license recognition can be carried out in real time, improve system response time; Send license plate recognition result by data communication module to centring system, directly can search for from the license plate recognition result of centring system record, obtain the travel route of a certain vehicle, thus valuable clue can be obtained fast.
Vehicle detection and candid photograph module directly detect vehicle by video analysis and trigger candid photograph, and candid photograph mentioned here refers to from the successive frame of the high clear video image of uncompressed process, extracts vehicle image to be identified continuously.The vehicle image to be identified of such acquisition does not have compression losses, and compared with the image therefore obtained from the video of decompress(ion) with centring system, picture quality is higher, more easily accurately identifies car plate.
Further, the high-definition camera with Car license recognition function also comprises car plate comparing module, car plate comparing module is connected with data communication module, car plate comparing module is used for the car plate data in the car plate data identified and given target vehicle information to compare, comparison is consistent, sends described vehicle image to be identified, license plate recognition result, comparison result and warning message by data communication module to centring system.
The high-definition camera of Car license recognition function that what the utility model provided have, also comprises the car plate comparing module of comparing with the car plate data in target vehicle information, when comparison is consistent, sends a warning, be convenient to monitor target vehicle, tackle.
Target vehicle information mentioned here refers to the relevant information for identifying target vehicle such as license board information, vehicle, color of target vehicle, the target vehicle information sent by data communication module receiving center system, and sends car plate comparing module to.
Further, license plate recognition result comprises the time location information of car plate data and the vehicle to be identified appearance identified.
Further, clustering processing is carried out to the image to be identified of the same vehicle captured continuously, and be subordinated to according to image quality evaluation factor in the image to be identified of same vehicle and optimize single frames or multiframe vehicle image to be identified, identify.
The high-definition camera of Car license recognition function that what the utility model provided have, clustering processing is carried out to the image to be identified of the same vehicle captured continuously, image by same vehicle is classified as a class, and be subordinated in the image to be identified of same vehicle according to image quality evaluation factors such as license plate sloped angle, image definition, contrasts and optimize 1-3 frame vehicle image, carry out Car license recognition, can reduce in high-definition camera and whole system carry out identifying, comparison, storage, transmission load, improve the accuracy rate of Car license recognition simultaneously.
Vehicle image to be identified for Car license recognition can be single frames or multiframe, and user can select multiframe recognition mode according to Car license recognition accuracy requirement.
Further, Car license recognition module also comprises:
Pretreatment module, for carrying out pre-service to vehicle image to be identified, described pre-service refers to one or more in the enhancing of illumination compensation, edge, noise reduction or gray processing process;
Locating module, for carrying out whole scan on the vehicle image to be identified after pre-service, determining license plate area and intercepting license plate image;
Character segmentation module: for location character region accurate in described license plate image, and carry out Character segmentation according to character size feature;
Character recognition module: for carrying out convergent-divergent, feature extraction to the character after segmentation, carrying out mating with the standard character in Character mother plate and differentiate, identify described character;
Post-processing module: for verifying license plate recognition result according to predefine rule, if the image to be identified of same vehicle is multiframe, fusion treatment is carried out to obtain final recognition result to the repeatedly recognition result of the multiframe of same vehicle image to be identified;
Described pretreatment module, described License Plate module, described Character segmentation module, described character recognition module and described post-processing module connect successively.
The Car license recognition module of what the utility model provided the have high-definition camera of Car license recognition function, to collect that vehicle image to be identified carries out Image semantic classification, license plate area is located and intercept, Character segmentation, character recognition and recognition result aftertreatment, provide license plate recognition result.
Through pre-service, the car plate in vehicle image to be identified is easier to identify, especially carries out high light suppression to the local hot spot caused because of car light, to make license plate area more clear.
Further, car plate comparing module cryptographic storage target vehicle information.
The high-definition camera of Car license recognition function that what the utility model provided have, adopts cipher mode to store target vehicle information, prevents from unlawfully being stolen or deciphering access, improve the security of high-definition camera.
Further, data communication module also comprises encrypting module, for being encrypted vehicle image to be identified, license plate recognition result, comparison result and warning message.
The high-definition camera of Car license recognition function that what the utility model provided have, cipher mode is adopted to transmit vehicle image to be identified, license plate recognition result, comparison result and warning message, prevent from unlawfully being stolen on network, further increase the security of high-definition camera.
Further, data communication module also comprises cache module, when there is exception for the communication link had between the high-definition camera of Car license recognition function and centring system, the vehicle image to be identified that buffer memory Car license recognition module transmits, license plate recognition result, comparison result and warning message.
The high-definition camera of Car license recognition function that what the utility model provided have, when communication link occurs abnormal, still Car license recognition, comparison can be proceeded, and vehicle image to be identified, license plate recognition result, comparison result and warning message buffer memory that Car license recognition module is transmitted; After communication link recovers, the vehicle image to be identified, license plate recognition result, comparison result and the warning message that buffer memory Car license recognition module are transmitted are sent to centring system, thus improve availability.
The utility model also provides a kind of supervisory system, comprises centring system, and supervisory system comprises the high-definition camera that at least one has Car license recognition function.
The supervisory system that the utility model provides, Car license recognition, comparison function is completed in the high-definition camera with Car license recognition function, and will not be transferred to that host computer or centring system carry out identifying, comparison by vehicle image in a large number, reduce centring system complexity, make centring system be easy to extendability; Directly can search for from the license plate recognition result of centring system record, obtain the travel route of a certain vehicle, thus valuable clue can be obtained fast; When comparison is consistent, send a warning, be convenient to monitor target vehicle, tackle.
Further, when the high-definition camera with Car license recognition function is multiple stage, every platform has the target vehicle information stored in the car plate comparing module of the high-definition camera of Car license recognition function, is determined separately by centring system.
The supervisory system that the utility model provides, the target vehicle information that high-definition camera that every platform has a Car license recognition function needs to compare can be set separately, the monitored object of control point can be set targetedly according to different monitoring demands, make the target vehicle information that the comparison of different control points is relevant, thus improve the efficiency of supervisory system.
Compared with prior art, the high-definition camera with Car license recognition function that the utility model provides and supervisory system have following beneficial effect:
(1) directly vehicle detection and video capture is carried out by video analysis, without the need to installing the auxiliary detection facilities such as pre-buried ground induction coil, infrared sensor, cluster can be carried out preferred to the multiframe of same vehicle image to be identified, Car license recognition function is directly completed in the high-definition camera with Car license recognition function, host computer will be transferred to or centring system is compared by a large amount of vehicle image to be identified, improve system response time, simplify system architecture, reduce the difficulty of System Implementation, reduce system Construction and maintenance cost; Simultaneously when needing the travel route obtaining a certain vehicle, can directly search for from the license plate recognition result of centring system record, and ground checking monitoring video of need not wasting time and energy, thus valuable clue can be obtained fast;
(2) comprise the car plate comparing module of comparing with the car plate data in target vehicle information, when comparison is consistent, send a warning, be convenient to monitor target vehicle, tackle;
(3) data communication module also comprises cache module, when communication link occurs abnormal, still Car license recognition, comparison can be proceeded, and vehicle image to be identified, license plate recognition result, comparison result and warning message buffer memory that Car license recognition module is transmitted, after communication link recovers, vehicle image to be identified, license plate recognition result, comparison result and warning message that the Car license recognition module of buffer memory transmits are sent to centring system, thus improve availability;
(4) centring system is without the need to configuring Car license recognition, comparison resource in proportion, system architecture simplifies, configuration requirement reduces, to the management of this high-definition camera and Expansion also more convenient, also reduce the difficulty of engineering construction, save engineering construction, maintained from front end expense, thus the overall cost of Vehicle License Plate Recognition System is effectively controlled;
(5) supervisory system can set separately the target vehicle information that high-definition camera that every platform has a Car license recognition function needs to compare, the monitored object of control point can be set targetedly according to different monitoring demands, make the target vehicle data that the comparison of different control points is relevant, thus improve dirigibility and the efficiency of supervisory system.
Accompanying drawing explanation
Fig. 1 is the basic framework schematic diagram comprising the supervisory system of the high-definition camera with Car license recognition function of an embodiment of the present utility model;
Fig. 2 is the basic framework schematic diagram comprising the supervisory system of the high-definition camera with Car license recognition function of another embodiment of the present utility model.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to following examples.
As shown in Figure 1, the supervisory system comprising the high-definition camera with Car license recognition function of an embodiment of the present utility model, comprises the high-definition camera and centring system with Car license recognition function;
Supervisory system in the present embodiment can comprise the high-definition camera that one or more has Car license recognition function.
The high-definition camera with Car license recognition function comprises:
High definition video collecting module, for the digital collection of high clear video image;
HD video compression module, for carrying out compressed encoding to high clear video image;
Data communication module, transmits for the data had between the high-definition camera of Car license recognition function and centring system;
Whether vehicle detection and candid photograph module, have vehicle for detecting from high clear video image successive frame and capture vehicle image;
Car license recognition module, identifies car plate data in vehicle image to be identified, sends vehicle image to be identified and license plate recognition result by data communication module to centring system;
High definition video collecting module, vehicle detection and candid photograph module, Car license recognition module are connected successively with data communication module, and HD video compression module is connected with data communication module with high definition video collecting module respectively.
High definition video collecting module, for obtaining on-the-spot HD video sequential frame image, comprise high definition cmos image sensor and high definition camera lens, sensor resolution is more than 2,000,000 pixels.
High definition video collecting module also can adopt other video cameras with high-definition network camera similar structures common in the market.
The high-definition camera with Car license recognition function in the present embodiment adopts Video processing Soc special chip to carry out video relevant treatment, general needs are considered to be equipped with the key process unit such as multi-core CPU, High Performance DSP, and be configured with Large Copacity internal memory, to ensure operation and the data buffer storage demand of high definition video collecting, compression function, need the even more flash storage parts of at least 4G or SD card for the operation of car plate data acquisition, identification and comparison and buffer memory, target vehicle data storage etc. in addition.
Adopt the Video processing Soc chip (or FPGA+DSP) that can meet process resource needs in the market in the present embodiment, relatively typically mostly be the multicore architecture of ARM+DSP, such as Ti DM81xx.Also can select from now on may more suitably New type of S oc chip.
HD video coding module, becomes code stream for compression high definition video sequential frame image, is included in Video processing Soc chip, is a submodule of Video processing Soc chip.
HD video coding module can be realized by hardware accelerator, also can be realized by dsp software.
In the present embodiment, HD video coding module passes through hardware implementing.
HD video coding module coding standard can be H.264 H.265, also can be the SVAC standard of China.
In the present embodiment, HD video coding module adopts H.264 coding standard.
Whether vehicle detection and capture module, have vehicle for detecting from high clear video image successive frame and capture vehicle image, can continuous several times to capture and to carry out cluster to the same vehicle image to be identified captured preferred.
The Video processing Soc chip selected in the present embodiment contains the function of vehicle detection and candid photograph, can directly use.
License plate recognition result comprises the time location information of car plate data and the vehicle to be identified appearance identified.
Position mentioned here refers to the place that the high-definition camera with Car license recognition function is installed.
The high-definition camera with Car license recognition function of the present embodiment, clustering processing is carried out to the image to be identified of the same vehicle captured continuously, and be subordinated to according to image quality evaluation factor in the image to be identified of same vehicle and optimize single frames or multiframe vehicle image to be identified, identify.
When vehicle to be identified appears in monitoring scene, video camera can be captured continuously, thus vehicle to be identified is usually found in multiple video successive frame, if all processed each two field picture of same vehicle to be identified, a large amount of calculating can be taken, store and transfer resource, therefore the image of same vehicle to be identified is classified as a class, and according to license plate sloped degree, image definition, the image quality evaluation factors such as contrast are subordinated in the image of same vehicle and optimize 1-3 frame vehicle image, identify, can reduce in high-definition camera and whole system and identify, store, the load of transmission, improve the accuracy of Car license recognition simultaneously.
Vehicle image to be identified for Car license recognition can be single frames or multiframe, and user can select multiframe recognition mode according to Car license recognition accuracy requirement.
Car license recognition module, for carrying out Image semantic classification, license plate area location, License Plate Character Segmentation, character recognition and recognition result aftertreatment to collecting vehicle image and provide license plate recognition result, then the car plate data identified and given target vehicle information are compared, comparison is consistent, is sent send warning message to centring system by data communication module;
Car license recognition module also comprises the pretreatment module, License Plate module, Character segmentation module, character recognition module and the post-processing module that connect successively:
Pretreatment module, for carrying out pre-service to vehicle image to be identified, described pre-service refers to one or more in the enhancing of illumination compensation, edge, noise reduction or gray processing process;
License Plate module, for carrying out whole scan on the gray level image after Image semantic classification, determining license plate area and intercepting license plate image;
Character segmentation module: after orienting license plate area in the picture, by the process such as gray processing, binaryzation, the character zone in accurate positioning licence plate image, then carries out Character segmentation according to character size feature;
Character recognition module: for carrying out convergent-divergent, feature extraction to the character after segmentation, carrying out mating with the standard character expression-form in character data library template and differentiate;
Post-processing module: for verifying license plate recognition result according to predefine rule, carry out fusion treatment to obtain final license plate recognition result to the repeatedly recognition result of the multiple image of same vehicle.
Pre-service can be arranged according to field condition by user and adopt that illumination compensation, edge strengthen, one or more in noise reduction or gray processing process.In the present embodiment, pre-service adopts gray processing process.
Data communication module, for carrying out data transmission by communication link and centring system, sends the video codeword data stream of vehicle image to be identified, license plate recognition result and the HD video compression module transmission that Car license recognition module transmits to centring system.
As shown in Figure 2, the supervisory system comprising the high-definition camera with Car license recognition function of another embodiment of the present utility model, comprises the high-definition camera and centring system with Car license recognition function;
Supervisory system in the present embodiment can comprise the high-definition camera that one or more has Car license recognition function.
Compared with the high-definition camera with Car license recognition function of the embodiment shown in Fig. 1, the high-definition camera with Car license recognition function in the present embodiment also comprises: car plate comparing module.
Car plate comparing module is connected with data communication module, car plate comparing module is used for the car plate data in the car plate data identified and given target vehicle information to compare, comparison is consistent, sends described vehicle image to be identified, license plate recognition result, comparison result and warning message by data communication module to centring system.
Every objective information of vehicles comprises car plate data, vehicle and colouring information, and data number can be arranged according to the concrete condition of monitoring site, can reach tens thousand of even more, these are sent by data center systems.
Car plate comparing module cryptographic storage target vehicle information, prevents from unlawfully being stolen or deciphering access, improves the security of high-definition camera.
When receiving new target vehicle information, upgrade local data.
Data communication module, for carrying out data transmission by communication link and centring system, the target vehicle information that receiving center system sends, and be sent to car plate comparing module; The video codeword data stream of vehicle image to be identified, license plate recognition result, comparison result, warning message and the HD video compression module transmission that Car license recognition module transmits is sent to centring system.
Data communication module also comprises encrypting module, for being encrypted license plate recognition result, car plate comparison result, preventing from unlawfully being stolen on network, further increasing the security of high-definition camera.
Data communication module also comprises cache module, when there is exception for the communication link had between the high-definition camera of Car license recognition function and centring system, the vehicle image to be identified that buffer memory Car license recognition module transmits, license plate recognition result, comparison result and warning message.
When communication link occurs abnormal, the high-definition camera with Car license recognition function in the present embodiment still can proceed Car license recognition, comparison, and by vehicle image template to be identified, license plate recognition result, comparison result, the warning message buffer memory of the transmission of Car license recognition comparing module, after communication link recovers, the vehicle image template to be identified, license plate recognition result, comparison result and the warning message that the Car license recognition comparing module of buffer memory are transmitted are sent to centring system, thus improve availability.
In the supervisory system of the present embodiment, when the high-definition camera with Car license recognition function is multiple stage, the target vehicle information that the car plate comparing module that every platform has the high-definition camera of Car license recognition function stores, determined separately by centring system, thus the monitored object of control point can be set according to different monitoring demands targetedly, make the target vehicle information that the comparison of different control points is relevant, thus improve comparison efficiency and the dirigibility of supervisory system.
The high-definition camera with Car license recognition function of the present embodiment is generally in on-the-spot front end, and centring system is generally be in backstage; Front end may have multiple, and scattering device, in different places, keeps communicating to connect by communication link and backstage.Vehicle image to be identified, license plate recognition result and comparison result after clustering processing, HD video code stream etc. are sent to center, backstage process further, such as vehicle image to be identified is stored, can retrieve for examination for inquiry later, also can be used for the retrieval of comparison afterwards, alarm can be carried out to operating personnel for the anomalous identification result caused because of factors such as image is stained, covering, incompleteness.
High-definition camera and the supervisory system of Car license recognition function that what the utility model provided have, directly carry out vehicle detection and video capture by video analysis, without the need to installing pre-buried ground induction coil, the auxiliary detection facilities such as infrared sensor, cluster can be carried out preferred to the multiframe of same vehicle image to be identified, Car license recognition function is directly completed in the high-definition camera with Car license recognition function, host computer will be transferred to or centring system is compared by a large amount of vehicle image to be identified, improve system response time, simplify system architecture, reduce the difficulty of System Implementation, reduce system Construction and maintenance cost, simultaneously when needing the travel route obtaining a certain vehicle, can directly search for from the license plate recognition result of centring system record, and ground checking monitoring video of need not wasting time and energy, thus valuable clue can be obtained fast, comprise the car plate comparing module of comparing with the car plate data in target vehicle information, when comparison is consistent, send a warning, be convenient to monitor target vehicle, tackle, data communication module also comprises cache module, when communication link occurs abnormal, still Car license recognition, comparison can be proceeded, and vehicle image to be identified, license plate recognition result, comparison result and warning message buffer memory that Car license recognition module is transmitted, after communication link recovers, vehicle image to be identified, license plate recognition result, comparison result and warning message that the Car license recognition module of buffer memory transmits are sent to centring system, thus improve availability, centring system is without the need to configuring Car license recognition, comparison resource in proportion, system architecture simplifies, configuration requirement reduces, to the management of this high-definition camera and Expansion also more convenient, also reduce the difficulty of engineering construction, save engineering construction, maintained from front end expense, thus the overall cost of Vehicle License Plate Recognition System is effectively controlled, supervisory system can set separately the target vehicle information that high-definition camera that every platform has a Car license recognition function needs to compare, the monitored object of control point can be set targetedly according to different monitoring demands, make the target vehicle data that the comparison of different control points is relevant, thus improve dirigibility and the efficiency of supervisory system.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without the need to creative work.Therefore, all technician in the art according to design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should by the determined protection domain of claims.

Claims (10)

1. there is a high-definition camera for Car license recognition function, it is characterized in that comprising:
High definition video collecting module, for the digital collection of high clear video image;
HD video compression module, for carrying out compressed encoding to high clear video image;
Whether vehicle detection and candid photograph module, have vehicle for detecting from high clear video image successive frame and capture vehicle image to be identified continuously;
Data communication module, transmits for the described data had between the high-definition camera of Car license recognition function and centring system;
Car license recognition module, for identifying car plate data in described vehicle image to be identified, sends described vehicle image to be identified and license plate recognition result by described data communication module to centring system;
Described high definition video collecting module, described vehicle detection and candid photograph module, described Car license recognition module are connected successively with described data communication module, and described HD video compression module is connected with described data communication module with described high definition video collecting module respectively.
2. there is the high-definition camera of Car license recognition function as claimed in claim 1, it is characterized in that, the described high-definition camera with Car license recognition function also comprises car plate comparing module, described car plate comparing module is connected with described data communication module, described car plate comparing module is used for the car plate data of the described car plate data identified and given target vehicle information to compare, comparison is consistent, sends described vehicle image to be identified, license plate recognition result, comparison result and warning message by data communication module to centring system.
3. there is the high-definition camera of Car license recognition function as claimed in claim 2, it is characterized in that, target vehicle information described in described car plate comparing module cryptographic storage.
4. have the high-definition camera of Car license recognition function as claimed in claim 1, it is characterized in that, described license plate recognition result comprises the time location information of car plate data and the vehicle to be identified appearance identified.
5. there is the high-definition camera of Car license recognition function as claimed in claim 1, it is characterized in that, clustering processing is carried out to the image to be identified of the same vehicle captured continuously, and be subordinated to according to image quality evaluation factor in the image to be identified of same vehicle and optimize single frames or multiframe vehicle image to be identified, identify.
6. have the high-definition camera of Car license recognition function as claimed in claim 1, it is characterized in that, described Car license recognition module also comprises:
Pretreatment module, for carrying out pre-service to described vehicle image to be identified, described pre-service refers to one or more in the enhancing of illumination compensation, edge, noise reduction or gray processing process;
Locating module, for carrying out whole scan on the vehicle image to be identified after pre-service, determining license plate area and intercepting license plate image;
Character segmentation module: for location character region accurate in described license plate image, and carry out Character segmentation according to character size feature;
Character recognition module: for carrying out convergent-divergent, feature extraction to the character after segmentation, carrying out mating with the standard character in Character mother plate and differentiate, identify described character;
Post-processing module: for verifying license plate recognition result according to predefine rule, if the image to be identified of same vehicle is multiframe, fusion treatment is carried out to obtain final recognition result to the repeatedly recognition result of the multiframe of same vehicle image to be identified;
Described pretreatment module, described License Plate module, described Character segmentation module, described character recognition module and described post-processing module connect successively.
7. there is the high-definition camera of Car license recognition function as claimed in claim 1, it is characterized in that, described data communication module also comprises encrypting module, for being encrypted described vehicle image to be identified, described license plate recognition result, comparison result and warning message.
8. there is the high-definition camera of Car license recognition function as claimed in claim 1, it is characterized in that, described data communication module also comprises cache module, when there is exception for the described communication link had between the high-definition camera of Car license recognition function and described centring system, the vehicle image described to be identified that Car license recognition module described in buffer memory transmits, license plate recognition result, comparison result and warning message.
9. a supervisory system, comprises centring system, it is characterized in that, described supervisory system comprises at least one the high-definition camera with Car license recognition function as described in claim 1-8.
10. supervisory system as claimed in claim 9, it is characterized in that, when the described high-definition camera with Car license recognition function is multiple stage, the target vehicle information that the car plate comparing module described in every platform with the high-definition camera of Car license recognition function stores, is determined separately by described centring system.
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106034230A (en) * 2016-07-18 2016-10-19 西安建筑科技大学 SOC-chip-based security video monitoring system and method
CN106203312A (en) * 2016-06-30 2016-12-07 合肥指南针电子科技有限责任公司 A kind of intelligent entry-exit management system
CN106209872A (en) * 2016-07-18 2016-12-07 西安建筑科技大学 A kind of safety video monitoring equipment based on SOC and monitoring method
CN106251634A (en) * 2016-08-09 2016-12-21 成都联众智科技有限公司 Embedded vehicle license plate identification system
CN106686387A (en) * 2016-12-30 2017-05-17 杭州占峰科技有限公司 Picture compression method for photographing surface of odometer style water meter
CN108133599A (en) * 2017-12-21 2018-06-08 山东亿海兰特通信科技有限公司 A kind of slag-soil truck video frequency identifying method and system
CN109754610A (en) * 2019-03-01 2019-05-14 北京数字智通科技有限公司 vehicle monitoring method and device
CN111611863A (en) * 2020-04-22 2020-09-01 浙江大华技术股份有限公司 License plate image quality evaluation method and device and computer equipment

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106203312A (en) * 2016-06-30 2016-12-07 合肥指南针电子科技有限责任公司 A kind of intelligent entry-exit management system
CN106034230A (en) * 2016-07-18 2016-10-19 西安建筑科技大学 SOC-chip-based security video monitoring system and method
CN106209872A (en) * 2016-07-18 2016-12-07 西安建筑科技大学 A kind of safety video monitoring equipment based on SOC and monitoring method
CN106251634A (en) * 2016-08-09 2016-12-21 成都联众智科技有限公司 Embedded vehicle license plate identification system
CN106686387A (en) * 2016-12-30 2017-05-17 杭州占峰科技有限公司 Picture compression method for photographing surface of odometer style water meter
CN108133599A (en) * 2017-12-21 2018-06-08 山东亿海兰特通信科技有限公司 A kind of slag-soil truck video frequency identifying method and system
CN109754610A (en) * 2019-03-01 2019-05-14 北京数字智通科技有限公司 vehicle monitoring method and device
CN111611863A (en) * 2020-04-22 2020-09-01 浙江大华技术股份有限公司 License plate image quality evaluation method and device and computer equipment

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