CN103247178A - Intelligent vehicle license plate recognition system for parking lot - Google Patents
Intelligent vehicle license plate recognition system for parking lot Download PDFInfo
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- CN103247178A CN103247178A CN 201310160219 CN201310160219A CN103247178A CN 103247178 A CN103247178 A CN 103247178A CN 201310160219 CN201310160219 CN 201310160219 CN 201310160219 A CN201310160219 A CN 201310160219A CN 103247178 A CN103247178 A CN 103247178A
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Abstract
The invention discloses an intelligent vehicle license plate recognition system for a parking lot. The intelligent vehicle license plate recognition system is characterized by comprising a computer system, a vehicle license plate recognition module and a parking spot guide module, wherein the vehicle license plate recognition module comprises an image acquisition unit, a vehicle license plate positioning unit, a vehicle license plate correction unit, a character segmentation unit, a vehicle license plate recognition unit and a result output unit which are connected with the computer system respectively; and the parking spot guide module comprises a display unit and a detection unit which are connected with the computer system respectively. According to the intelligent vehicle license plate recognition system for the parking lot, the accuracy for recognizing vehicle license plates in the parking lot is greatly improved, and the efficiency and the security of managing the parking lot are improved.
Description
Technical field
The invention belongs to electronic technology field, relate to the managing system of car parking field, particularly belong to a kind of design and manufacturing of intelligent parking lot Vehicle License Plate Recognition System.
Background technology
Science and technology also is deep in the middle of the daily life gradually constantly bringing forth new ideas, constantly developing.Just begin in 19th century of intelligent transportation system concept to propose, become the development trend of world today's road traffic.In intelligent transportation system, the intelligent parking lot Vehicle License Plate Recognition System is an important ring wherein.
(License Plate Recognition LPR) based on computer technology, image processing techniques, fuzzy diagnosis, sets up the characteristic model of vehicle to license plate recognition technology, and the identification vehicle characteristics is as number plate, vehicle, color etc.The intelligent parking lot Vehicle License Plate Recognition System is effectively managed the vehicle that enters the parking lot by license plate recognition technology.
People propose multiple parking lot Vehicle License Plate Recognition System scheme at present, but the car plate identification in parking lot management of all schemes is not accurate enough, causes parking lot management efficient not high and dangerous.
Summary of the invention
The objective of the invention is to solve above-mentioned deficiency of the prior art, a kind of intelligent parking lot Vehicle License Plate Recognition System is provided, so that when having guaranteed vehicle safety, also improve parking lot management efficient.
The object of the present invention is achieved like this: a kind of intelligent parking lot Vehicle License Plate Recognition System, it is characterized in that: mainly comprise computer system, car plate identification module and parking stall bootstrap module, described car plate identification module comprises the image acquisition units that links to each other with computer system respectively, car plate positioning unit, car plate correcting unit, Character segmentation unit, car plate recognition unit, output unit as a result.Described parking stall bootstrap module comprises display unit, the probe unit that links to each other with computer system respectively.
The car plate identification module belongs to the pure software recognition method, system can be according to vehicle panoramic pictures and feature picture, finish the judgement of vehicle characteristics, in conjunction with trigger mechanism, system provides essential informations such as vehicle heading, elapsed time, place, type of vehicle, the number-plate number.
Car plate identification module technical parameter
1., car plate capture rate:
The vehicle image capture rate that in the guarded region 0km/h～200km/h is travelled reaches more than 99%.
2., car plate recognition accuracy:
Daytime, the car plate recognition accuracy was greater than 95%; Night, the car plate recognition accuracy was more than 90% (relevant with illumination condition).
3., average non-fault continuous operating time:
MTBF 〉=25000 hour.
4., capture photo resolution:
768*576、704*576。
5., car plate color identification:
Gradation of image grade: 256 grades; Image color grade: 24 true color.
Described display unit comprises residue parking stall display.
Described probe unit comprises ultrasonic detector.
Take the present invention of above measure, greatly guaranteed the accuracy of parking lot car plate identification and high efficiency and the security that has improved parking lot management.
Description of drawings
Fig. 1 is system architecture synoptic diagram of the present invention;
Fig. 2 is the workflow diagram of the present invention when being applied to the parking lot vehicle and sailing into;
Fig. 3 is the workflow diagram of the present invention when being applied to the parking lot vehicle and rolling away from.
The present invention is described in further detail in conjunction with the accompanying drawings and embodiments more below.
Embodiment
Fig. 1 has provided system architecture synoptic diagram of the present invention.The present invention mainly comprises computer system and car plate identification module, and described car plate identification module comprises the image acquisition units that links to each other with computer system respectively, car plate positioning unit, car plate correcting unit, Character segmentation unit, car plate recognition unit, output unit as a result.Described parking stall bootstrap module comprises display unit, the probe unit that links to each other with computer system respectively.The parking stall bootstrap module in car plate identification module of the present invention and parking lot is unified control and management by an intelligent parking lot car plate identification software.
Described display unit comprises residue parking stall display.
Described probe unit comprises ultrasonic detector.
The following describes concrete structure and the application of the embodiment of the invention.
The computer system of embodiment adopts industrial computer, thinks that the reason configuration is as follows:
Microprocessor: be not less than intel pentium 2.0GHZ
Front end system bus: be not less than the outer frequency of 1GHz
Board chip set: be not less than INTEL 865 chipsets
Internal memory: be not less than 512MB DDR400
Video memory: be not less than 64MB
Hard disk: be not less than 120GB
The car plate identification module belongs to the pure software recognition method, system can be according to vehicle panoramic pictures and feature picture, finish the judgement of vehicle characteristics, in conjunction with trigger mechanism, system provides essential informations such as vehicle heading, elapsed time, place, type of vehicle, the number-plate number.
Car plate identification module technical parameter
1., car plate capture rate:
The vehicle image capture rate that in the guarded region 0km/h～200km/h is travelled reaches more than 99%.
2., car plate recognition accuracy:
Daytime, the car plate recognition accuracy was greater than 95%; Night, the car plate recognition accuracy was more than 90% (relevant with illumination condition).
3., average non-fault continuous operating time:
MTBF 〉=25000 hour.
4., capture photo resolution:
768*576、704*576。
5., car plate color identification:
Gradation of image grade: 256 grades; Image color grade: 24 true color.
The LKD850LED display screen that the residue parking stall display screen of embodiment adopts Lian Kaida to produce.
The parking stall sniffer of embodiment adopts the Ai Dapu parking space detector, adopts ultrasonic listening mode detection vehicle.
Fig. 2 is the workflow diagram of the present invention when being applied to the parking lot vehicle and sailing into.
Fig. 3 is the workflow diagram of the present invention when being applied to the parking lot vehicle and rolling away from.
Embodiment is work like this: when vehicle sails the parking lot into, be triggered to wagon detector, Vehicle License Plate Recognition System starts, system carries out image acquisition to vehicle, obtain the laggard driving board of vehicle image location, provide the position of car plate in the image or provide several possible car plate positions, carrying out car plate then corrects and Character segmentation, character in the license plate area behind the location is split one by one, judge that the line tilt of going forward side by side of car plate form corrects, then the character recognition that cuts out is come out, export the result at last.
After obtaining license plate number, vehicle is judged:
If vehicle is interim car, system will record license plate number, and when this interim car rolled the parking lot away from, system captured the license plate number of this car automatically, compare with this car license plate number that is kept in the management computer then, if the license plate number coupling is then let pass; If license plate number does not match, forbid that then this car rolls away from and this car is verified.
If vehicle license plate number is recorded in the management computer, when carrying out license plate number automatically to the porch system, vehicle identifies, if mate then system lets pass automatically.
After vehicle entered the parking lot, system was sent to residue parking stall display screen with parking stall residue situation, and with guiding vehicles to idle parking stall.Guidance system adopts ultrasonic detector that the parking position situation of parking is surveyed, and is communication mode with the RS485 bus, forms and from multistage network the parking stall detector is controlled.Send sensor parking stall emission downwards ultrasound wave, in the emission sound wave, pick up counting, ultrasound wave is propagated in air, running into barrier in the way just returns immediately, accept sensor and receive that reflection wave just stops timing immediately, come detecting ultrasonic wave detector below whether to stop to have vehicle with this, real-time statistics also shows residue parking stall, parking lot and data is returned to computer system.
Intelligent parking lot car plate identification software carries out unified management to native system.The automatic store car image of database, the number-plate number, access time and vehicle are parked data such as position, parking stall, each bar record all with this car image and car plate correspondence.Software provides complete form, can add up or print all vehicle data forms.Increase the car plate preset function, can import the specific number-plate number in advance, this car can freely enter the parking lot.
Claims (2)
1. intelligent parking lot Vehicle License Plate Recognition System, it is characterized in that: mainly comprise computer system, car plate identification module and parking stall bootstrap module, described car plate identification module comprises the image acquisition units that links to each other with computer system respectively, car plate positioning unit, car plate correcting unit, Character segmentation unit, car plate recognition unit, output unit as a result, and described parking stall bootstrap module comprises display unit, the probe unit that links to each other with computer system respectively.
2. according to the above intelligent parking lot Vehicle License Plate Recognition System of claim, it is characterized in that: described probe unit comprises ultrasonic detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310160219 CN103247178A (en) | 2013-05-03 | 2013-05-03 | Intelligent vehicle license plate recognition system for parking lot |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201310160219 CN103247178A (en) | 2013-05-03 | 2013-05-03 | Intelligent vehicle license plate recognition system for parking lot |
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| CN103247178A true CN103247178A (en) | 2013-08-14 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632572A (en) * | 2013-12-17 | 2014-03-12 | 重庆大学 | Intelligent parking method and system |
| CN103794054A (en) * | 2013-08-28 | 2014-05-14 | 黑龙江傲立辅龙科技开发有限公司 | Computer-based vehicle license plate recognition system |
| CN106251637A (en) * | 2016-09-13 | 2016-12-21 | 杭州东方通信软件技术有限公司 | A kind of intelligent parking lot licence plate recognition method |
| CN106368476A (en) * | 2016-09-22 | 2017-02-01 | 山东华旗新能源科技有限公司 | Safe, intelligent and multistory parking lot system |
| CN108091141A (en) * | 2017-10-12 | 2018-05-29 | 西安天和防务技术股份有限公司 | Vehicle License Plate Recognition System |
| CN108806318A (en) * | 2018-06-19 | 2018-11-13 | 芜湖岭上信息科技有限公司 | A kind of parking occupancy management system and method based on image |
| CN109377572A (en) * | 2018-12-12 | 2019-02-22 | 杭州华云科技有限公司 | A kind of management control method and managing device of unattended cloud parking |
-
2013
- 2013-05-03 CN CN 201310160219 patent/CN103247178A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103794054A (en) * | 2013-08-28 | 2014-05-14 | 黑龙江傲立辅龙科技开发有限公司 | Computer-based vehicle license plate recognition system |
| CN103632572A (en) * | 2013-12-17 | 2014-03-12 | 重庆大学 | Intelligent parking method and system |
| CN106251637A (en) * | 2016-09-13 | 2016-12-21 | 杭州东方通信软件技术有限公司 | A kind of intelligent parking lot licence plate recognition method |
| CN106251637B (en) * | 2016-09-13 | 2019-02-15 | 杭州东方通信软件技术有限公司 | A kind of intelligent parking lot licence plate recognition method |
| CN106368476A (en) * | 2016-09-22 | 2017-02-01 | 山东华旗新能源科技有限公司 | Safe, intelligent and multistory parking lot system |
| CN108091141A (en) * | 2017-10-12 | 2018-05-29 | 西安天和防务技术股份有限公司 | Vehicle License Plate Recognition System |
| CN108091141B (en) * | 2017-10-12 | 2020-10-02 | 西安天和防务技术股份有限公司 | License plate recognition system |
| CN108806318A (en) * | 2018-06-19 | 2018-11-13 | 芜湖岭上信息科技有限公司 | A kind of parking occupancy management system and method based on image |
| CN109377572A (en) * | 2018-12-12 | 2019-02-22 | 杭州华云科技有限公司 | A kind of management control method and managing device of unattended cloud parking |
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Address after: The 538000 the Guangxi Zhuang Autonomous Region Fangchenggang Port District Peach Bay Plaza Bauhinia District No. A3 Applicant after: Fangchenggang Sichuang Information Technology Co., Ltd. Address before: 536000 Building 1, South Asia building, Haicheng District, the Guangxi Zhuang Autonomous Region, Beihai 2210 Applicant before: Fangchenggang Sichuang Information Technology Co., Ltd. |
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Application publication date: 20130814 |