CN105913059A - Vehicle VIN code automatic identifying system and control method therefor - Google Patents
Vehicle VIN code automatic identifying system and control method therefor Download PDFInfo
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- CN105913059A CN105913059A CN201610218063.3A CN201610218063A CN105913059A CN 105913059 A CN105913059 A CN 105913059A CN 201610218063 A CN201610218063 A CN 201610218063A CN 105913059 A CN105913059 A CN 105913059A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition
- G06V30/14—Image acquisition
- G06V30/146—Aligning or centring of the image pick-up or image-field
- G06V30/1475—Inclination or skew detection or correction of characters or of image to be recognised
- G06V30/1478—Inclination or skew detection or correction of characters or of image to be recognised of characters or characters lines
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition
- G06V30/14—Image acquisition
- G06V30/148—Segmentation of character regions
- G06V30/153—Segmentation of character regions using recognition of characters or words
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/267—Welds
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Abstract
The invention relates to a vehicle VIN code automatic identifying system and a control method therefor. The system comprises a control host computer, an ultrasonic detecting unit, an image collection unit, an information processing unit, a temporary storage unit, an early warning unit, a motor vehicle detection station background database and a Public Security Ministry motor vehicle inspection and supervision system, wherein the ultrasonic detecting unit, the image collection unit, the information processing unit, the temporary storage unit and the early warning unit are connected with the control host computer; the motor vehicle detection station background database and the Public Security Ministry motor vehicle inspection and supervision system are connected with the control host computer via an INTERNET data exchange device. The method comprises the following steps: a step of VIN code electronic image collecting and pre-processing operation, a step of calling VIN code character recognition, a step of VIN code comparing operation, a step of identifying whether electronic images have edge defects, a step of checking whether VIN codes have change marks, a step of collecting ultrasonic detection signals at a VIN code zone, a step of subjecting ultrasonic detection data to signal wave processing operation via the control host computer, a step of analyzing and detecting whether the VIN code zone has welding lines and other steps; whether motor vehicle VIN code uniqueness affirmation is up to standard can be confirmed; operation steps of vehicle information inquiry and VIN code entering and uniqueness affirmation can be effectively simplified; detection efficiency and accuracy can be improved, and unlawful act can be contained effectively.
Description
Technical field
The present invention relates to a kind of vehicle uniqueness certification identification system, the automatic recognition system of a kind of vehicle VIN code and
Control method, belongs to technical field of automobile detection.
Background technology
ID code of vehicle VIN code (17) is by world's maker cognizance code WMI (1-3 position), vehicle declaratives
VDS (4-9 position), vehicle indicating section VIS (10-17 position) three part form.Can ensure that according to this coding rule
Any VIN code produced in 30 years is different, has the strongest uniqueness and versatility.Therefore, at national standard (GB
21861-2008) the requirement in " Vehicle Security inspection project and method ", the examination of VIN code assert as uniqueness.
Current GB proposes to recognize VIN code and printing feature (to VIN code and original number comparison, must not be had the most more
The vestige changed), the rubbing film of comparison VIN code, examination VIN code is with or without change suspicion.But, inspection body is typically no to be subject to
Examine the original number rubbing film of vehicle and the printing feature of vehicle two can not be differentiated and confirmed, and can only be confined to lead to
Cross eye-observation, rubbing film inscription rubbing differentiates and (1 or several in 17 bit codes is carried out with or without digging to change on vehicle frame VIN code
Chisel changes), portray (marking again after being polished by original number), in VIN code region, original number part entirety (will be scooped away by welding again
Number after change is filled) problem.Adding traditional employing manually to check, be manually entered VIN code, these problems are the most significantly
Reduce VIN code and carry out efficiency and the degree of accuracy of uniqueness identification.
Summary of the invention
It is an object of the invention to for above-mentioned prior art not enough, it is provided that a kind of fusion ultrasound detection, image recognition and information are mutual
Etc. multiple technologies in the vehicle VIN code automatic recognition system integrally applied and control method thereof.Image acquisition units passes through scanning car
On frame, VIN code is converted into electronic image, and temporary storage cell is kept in, and by information process unit to electronic image
Carry out pretreatment, identify character, transfer the archive information of motor vehicle inspection station back-end data library storage, and then the VIN that will generate
Code electronic image carries out Image semantic classification, image segmentation, feature extraction, identification classification, Intelligent Recognition electronic image edge feature.
After the VIN code electronic image non-flanged defect characteristic process, identified, application supersonic sounding unit detection VIN code region, pass through
Data sampling and processing, testing result display VIN code region no-welding-seam, then it is uploaded to Ministry of Public Security's machine in real time by INTERNET
Motor-car Inspection and Supervision system, submits verification of conformity to.Thus effectively realize simplifying information of vehicles inquiry and VIN code typing, uniqueness
The operating procedure assert, improves and checks efficiency and detection degree of accuracy, facilitate vehicle detection to supervise, be effectively contained in vehicle frame VIN code
The infringements such as upper chisel changes, region welding.
The automatic recognition system of a kind of vehicle VIN code is the technical scheme is that, including controlling by realizing the purpose of the present invention
Supersonic sounding unit, image acquisition units, information process unit, temporary storage cell and the early warning that main frame is connected with control main frame
Unit, the motor vehicle inspection station background data base and the Ministry of Public Security that are connected by the exchange of INTERNET data with control main frame are motor-driven
Supervisory systems is tested in car test.
Described image acquisition units application ccd sensor gathers VIN code electronic image, and the VIN code electronic chart that will collect
As being input to control main frame, stored by controlling host computer control temporary storage cell temporarily.
Described supersonic sounding unit application ultrasonic probe detection VIN code provincial characteristics, and the VIN code provincial characteristics that will collect
Data are input to control main frame, are stored by controlling host computer control temporary storage cell temporarily.
Described motor vehicle inspection station background data base, is used for depositing automobile license plate number, brand/model, principal character and technology
Parameters etc. identify information.
Described information process unit is for carrying out pretreatment, Intelligent Recognition word by the VIN code electronic image of image acquisition units collection
Symbol and electronic image edge feature, and the VIN code provincial characteristics data that the detection of supersonic sounding unit obtains are acquired, process
After be transferred to control main frame.
Described temporary storage cell uses AL422 memorizer, and described temporary memory is connected with controlling main frame.
Described prewarning unit uses auditory tone cues alarm mode and image alarm mode, and auditory tone cues alarm mode uses loudspeaker horn
Carrying out reporting " disqualified upon inspection " phonetic warning, image alarm mode is to eject " disqualified upon inspection " literary composition when certification is defective
Word dialog box.
Described Ministry of Public Security motor vehicles Inspection and Supervision system application INTERNET and motor vehicle inspection station realize real-time remote communication
Data exchange, and the VIN code uniqueness identification inspection voucher that real-time reception motor vehicles measuring station is uploaded is audited.
Described control main frame gathers supersonic sounding unit, image acquisition units input information, and input information is transferred at information
Reason unit carries out pretreatment, identification to electronic image, and the VIN code provincial characteristics data of ultrasonic probe detection are acquired, are located
Reason, controls temporary storage cell and deposits collection information, and controls prewarning unit early warning operation, passes through INTERNET
Realize Real Data Exchangs with motor vehicle inspection station background data base server to carry out vehicle information and call and Ministry of Public Security's motor vehicles
Inspection and Supervision system realizes the data transmission of real-time remote communication.
The automatic recognition system control method of a kind of vehicle VIN code, comprises the following steps:
1) image acquisition units is by carrying out electronic image capture in VIN code vertical direction, and the electronic image collected is kept in
In temporary storage cell.
2) control host computer control information process unit and electronic image is carried out pretreatment: the information process unit electronics to receiving
Image carries out gray processing, binaryzation, denoising, slant correction, Character segmentation and character recognition.And the result that will identify
It is transferred to control main frame.
3) VIN code comparison: after controlling the VIN code character that main frame receives information process unit identification, after vehicle inspection station
The vehicle information of platform database purchase is compared and is determined the uniqueness of VIN code.
4) VIN code changes the examination of vestige with or without chisel: the information process unit electronic image to receiving carries out framing, figure
As segmentation, gray processing, binaryzation, wavelet transformation, edge defect feature extraction, identify classification.And the result identified is passed
It is passed to control main frame.
5) if identifying, electronic image has edge defect, then prewarning unit carries out auditory tone cues early warning and image early warning, stores temporarily
Unit carry out store the defective voucher of examination information, and control main frame upload inspection voucher to motor vehicles Inspection and Supervision system of the Ministry of Public Security
System, confirms that motor vehicles VIN code uniqueness is assert defective；Identify electronic image non-flanged defect, then temporary storage cell is carried out
Storage examination information evidence of compliance.
6) supersonic sounding unit application ultrasonic probe carries out ultrasound emission in VIN code region, ultrasonic echo is received and converted into electricity
Signal, the treated waveform that obtains shows, is temporarily stored into temporary storage cell.
7) control host computer control information process unit and supersonic sounding data are carried out signal processing: information process unit is to gathering
To waveform carry out wave recovery, spectrum analysis, waveform processing, defect Intelligent Recognition, the recognition result judged is transferred to
Control main frame.
8) if waveform is treated, analysis detects that there is weld seam in vehicle frame VIN code region, then prewarning unit carries out auditory tone cues early warning
With image early warning, temporary storage cell carries out storing the defective voucher of examination information, and controls main frame and upload inspection voucher to public
Peace portion motor vehicles Inspection and Supervision system, confirms that motor vehicles VIN code uniqueness is assert defective；If waveform is treated, analyze detection
For vehicle frame VIN code region no-welding-seam, then temporary storage cell carries out storing examination information evidence of compliance, and controls main frame and upload
Inspection voucher, to Ministry of Public Security's motor vehicles Inspection and Supervision system, confirms that motor vehicles VIN code uniqueness is assert qualified.Detect complete.
The automatic recognition system of a kind of vehicle VIN code of the present invention, meets in national standard (GB 21861-2008) vehicle
Uniqueness assert requirement, can be applicable to the vehicle management work of public safety traffic management department.Vehicle inspection station passes through image acquisition units
Carry out electronic image capture, control host computer control information process unit and electronic image is carried out pretreatment, character recognition and electronic chart
As edge feature identification, can compare with the vehicle information of vehicle inspection station back-end data library storage and determine VIN code only
One property and identify that electronic image, with or without chiseling edge defect, solves and traditional is manually entered VIN code, inspection body is not subject to
The inspection original number rubbing film of vehicle and the problem that the printing feature of vehicle two can not be differentiated and confirmed.Because eliminating
To VIN code inscription rubbing, it is manually entered the operating procedure of VIN code and the application of intelligent identification technology so that it is the inspection to VIN code feature
Test, typing enquiring vehicle relevant information convenient and accurate.By supersonic sounding carry out VIN code region ultrasonic signal acquisition,
Treatment Analysis, solves tradition and can only be limited in by the problem that eye-observation welds in VIN code region to VIN code district
The Welding Testing more science of territory welding.
A kind of automatic recognition system of the vehicle VIN code of the present invention, control main frame by INTERNET respectively with vehicle inspection station
Background data base, Ministry of Public Security's motor vehicles Inspection and Supervision system realize Real Data Exchangs, and Vehicle inspection flow process more specification is with efficient.
Accompanying drawing explanation
The present invention is described further below in conjunction with the accompanying drawings:
Fig. 1 is the structured flowchart of the automatic recognition system of a kind of vehicle VIN code in the present invention.
Fig. 2 is the examination flow chart of the automatic recognition system control method of a kind of vehicle VIN code in the present invention.
Detailed description of the invention
As shown in Figure 1: the automatic recognition system of a kind of vehicle VIN code of the present invention, including control main frame, image acquisition units,
Supersonic sounding unit, information process unit, prewarning unit, temporary storage cell, motor vehicle inspection station background data base server
With Ministry of Public Security's motor vehicles Inspection and Supervision system.
Described image acquisition units application ccd sensor gathers VIN code electronic image, and the VIN code electronic chart that will collect
As being input to control main frame, stored by controlling host computer control temporary storage cell temporarily.
Described supersonic sounding unit application ultrasonic probe detection VIN code provincial characteristics, and the VIN code provincial characteristics that will collect
Data are input to control main frame, are stored by controlling host computer control temporary storage cell temporarily.
Described motor vehicle inspection station background data base, is used for depositing automobile license plate number, brand/model, principal character and technology
Parameters etc. identify information.
Described information process unit is for carrying out pretreatment, Intelligent Recognition word by the VIN code electronic image of image acquisition units collection
Symbol and electronic image edge feature, and the VIN code provincial characteristics data that the detection of supersonic sounding unit obtains are acquired, process
After be transferred to control main frame.
Described temporary storage cell uses AL422 memorizer to be connected with controlling main frame.
Described prewarning unit uses auditory tone cues alarm mode and image alarm mode, and auditory tone cues alarm mode uses loudspeaker horn
Carrying out reporting " disqualified upon inspection " phonetic warning, image alarm mode is to eject " disqualified upon inspection " literary composition when certification is defective
Word dialog box.
Described Ministry of Public Security motor vehicles Inspection and Supervision system application INTERNET and motor vehicle inspection station realize real-time remote communication
Data exchange, and the VIN code uniqueness identification inspection voucher that real-time reception motor vehicles measuring station is uploaded is audited.
Described control main frame gathers supersonic sounding unit, image acquisition units input information, and input information is transferred at information
Reason unit carries out pretreatment, identification to electronic image, and the VIN code provincial characteristics data of ultrasonic probe detection are acquired, are located
Reason, controls temporary storage cell and deposits collection information, and controls prewarning unit early warning operation, passes through INTERNET
Realize Real Data Exchangs with motor vehicle inspection station background data base server to carry out vehicle information and call and Ministry of Public Security's motor vehicles
Inspection and Supervision system realizes the data transmission of real-time remote communication.
As shown in Figure 2: the automatic recognition system control method of a kind of vehicle VIN code of the present invention, comprise the following steps:
1) image acquisition units is by carrying out electronic image capture in the vertical direction of vehicle VIN code mark, the electricity collected
Subimage is temporarily stored into temporary storage cell.
2) control host computer control information process unit and electronic image is carried out pretreatment: the information process unit electronics to receiving
Image carries out gray processing, binaryzation, denoising, slant correction, Character segmentation and character recognition.And the result that will identify
It is transferred to control main frame.
3) VIN code character identification is carried out information to call: control main frame and receive the VIN code character of information process unit identification
After, call the vehicle information of vehicle inspection station back-end data library storage.
4) VIN code comparison: the vehicle information of control main frame and vehicle inspection station back-end data library storage is compared and determined VIN
The uniqueness of code.If inconsistent with the vehicle information of storage, then prewarning unit carries out auditory tone cues early warning and image early warning, faces
Time memory element carry out storing the defective voucher of comparison information, and control main frame and upload inspection voucher to the inspection of Ministry of Public Security motor vehicles
Supervisory systems, confirms that motor vehicles VIN code uniqueness is assert defective；If consistent with the vehicle information of storage, store the most temporarily
Unit carries out storing comparison, examination information evidence of compliance, carries out next step,
5) VIN code edge feature identification: the information process unit electronic image to receiving carries out framing, image is split,
Gray processing, binaryzation, wavelet transformation, edge defect feature extraction, identification classification.And it is transferred to the result of identification control
Main frame.
6) VIN code changes the examination of vestige with or without chisel: if identifying, electronic image has edge defect, then prewarning unit carries out sound and carries
Show early warning and image early warning, temporary storage cell carry out store the defective voucher of examination information, and control main frame upload inspection with
Demonstrate,prove to Ministry of Public Security's motor vehicles Inspection and Supervision system, confirm that motor vehicles VIN code uniqueness is assert defective；If identify electronic image without
Edge defect, then temporary storage cell carries out storing examination information evidence of compliance, carries out next step,
7) supersonic sounding unit application ultrasonic probe carries out ultrasound emission in VIN code region, ultrasonic echo is received and converted into electricity
Signal, the treated waveform that obtains shows, is temporarily stored into temporary storage cell.
8) control host computer control information process unit and supersonic sounding data are carried out signal processing: information process unit is to gathering
To waveform carry out wave recovery, spectrum analysis, waveform processing, defect Intelligent Recognition, the recognition result judged is transferred to
Control main frame.
9) if waveform is treated, analysis detects that there is weld seam in vehicle frame VIN code region, then prewarning unit carries out auditory tone cues early warning
With image early warning, temporary storage cell carries out storing the defective voucher of examination information, and controls main frame and upload inspection voucher to public
Peace portion motor vehicles Inspection and Supervision system, confirms that motor vehicles VIN code uniqueness is assert defective；If waveform is treated, analyze detection
For vehicle frame VIN code region no-welding-seam, then temporary storage cell carries out storing examination information evidence of compliance, and controls main frame and upload
Inspection voucher, to Ministry of Public Security's motor vehicles Inspection and Supervision system, confirms that motor vehicles VIN code uniqueness is assert qualified.Detect complete.
The automatic recognition system of a kind of vehicle code of the present invention has the following characteristics that
1, the automatic recognition system of a kind of vehicle VIN code of the present invention, meets in national standard (GB 21861-2008) car
Uniqueness assert requirement, can be applicable to the vehicle management work of public safety traffic management department.
2, solve inspection body can not the printing feature of vehicle two not carried out by the original number rubbing film of inspection vehicle
Differentiate and confirmation, traditional problem being manually entered VIN code, because eliminating VIN code inscription rubbing, being manually entered VIN code
Operating procedure and the application of intelligence comparison technology so that it is more square to inspection, the typing enquiring vehicle relevant information of VIN code feature
Just and accurately.
3, solve tradition and can only be limited in by the problem that eye-observation welds in VIN code region to VIN code region
The Welding Testing more science of welding.
4, control main frame by INTERNET respectively with vehicle inspection station background data base, Ministry of Public Security's motor vehicles Inspection and Supervision system
Realizing Real Data Exchangs, Vehicle inspection flow process more specification is with efficient.
Claims (2)
1. an automatic recognition system for vehicle VIN code, including control main frame with control main frame be connected supersonic sounding unit,
Image acquisition units, information process unit, temporary storage cell and prewarning unit, and pass through INTERNET with controlling main frame
Data exchange the motor vehicle inspection station background data base and Ministry of Public Security's motor vehicles Inspection and Supervision system being connected,
Described image acquisition units application ccd sensor gathers VIN code electronic image, and the VIN code electronic chart that will collect
As being input to control main frame, stored by controlling host computer control temporary storage cell temporarily；
Described supersonic sounding unit application ultrasonic probe detection VIN code provincial characteristics, and the VIN code provincial characteristics that will collect
Data are input to control main frame, are stored by controlling host computer control temporary storage cell temporarily；
Described motor vehicle inspection station background data base, is used for depositing automobile license plate number, brand/model, principal character and technology
Parameters etc. identify information；
Described information process unit is for carrying out pretreatment, Intelligent Recognition word by the VIN code electronic image of image acquisition units collection
Symbol and electronic image edge feature, and the VIN code provincial characteristics data that the detection of supersonic sounding unit obtains are acquired, process
After be transferred to control main frame；
Described temporary storage cell uses AL422 memorizer to be connected with controlling main frame；
Described prewarning unit uses auditory tone cues alarm mode and image alarm mode, and auditory tone cues alarm mode uses loudspeaker horn
Carrying out reporting " disqualified upon inspection " phonetic warning, image alarm mode is to eject " disqualified upon inspection " literary composition when certification is defective
Word dialog box；
Described Ministry of Public Security motor vehicles Inspection and Supervision system application INTERNET and motor vehicle inspection station realize real-time remote communication
Data exchange, and the VIN code uniqueness identification inspection voucher that real-time reception motor vehicles measuring station is uploaded is audited；
Described control main frame gathers supersonic sounding unit, image acquisition units input information, and input information is transferred at information
Reason unit carries out pretreatment, identification to electronic image, and the VIN code provincial characteristics data of ultrasonic probe detection are acquired, are located
Reason, controls temporary storage cell and deposits collection information, and controls prewarning unit early warning operation, passes through INTERNET
Realize Real Data Exchangs with motor vehicle inspection station background data base server to carry out vehicle information and call and Ministry of Public Security's motor vehicles
Inspection and Supervision system realizes the data transmission of real-time remote communication.
The control method of the automatic recognition system of a kind of vehicle VIN code the most according to claim 1, comprises the following steps:
1) image acquisition units is by carrying out electronic image capture in VIN code vertical direction, and the electronic image collected is kept in
In temporary storage cell；
2) control host computer control information process unit and electronic image is carried out pretreatment: the information process unit electronics to receiving
Image carries out gray processing, binaryzation, denoising, slant correction, Character segmentation and character recognition, and the result that will identify
It is transferred to control main frame；
3) VIN code comparison: after controlling the VIN code character that main frame receives information process unit identification, after vehicle inspection station
The vehicle information of platform database purchase is compared and is determined the uniqueness of VIN code；
4) VIN code changes the examination of vestige with or without chisel: the information process unit electronic image to receiving carries out framing, figure
As segmentation, gray processing, binaryzation, wavelet transformation, edge defect feature extraction, identify classification, and the result identified is passed
It is passed to control main frame；
5) if identifying, electronic image has edge defect, then prewarning unit carries out auditory tone cues early warning and image early warning, stores temporarily
Unit carry out store the defective voucher of examination information, and control main frame upload inspection voucher to motor vehicles Inspection and Supervision system of the Ministry of Public Security
System, confirms that motor vehicles VIN code uniqueness is assert defective；Identify electronic image non-flanged defect, then temporary storage cell is carried out
Storage examination information evidence of compliance；
6) supersonic sounding unit application ultrasonic probe carries out ultrasound emission in VIN code region, ultrasonic echo is received and converted into electricity
Signal, the treated waveform that obtains shows, is temporarily stored into temporary storage cell；
7) control host computer control information process unit and supersonic sounding data are carried out signal processing: information process unit is to gathering
To waveform carry out wave recovery, spectrum analysis, waveform processing, defect Intelligent Recognition, the recognition result judged is transferred to
Control main frame；
8) if waveform is treated, analysis detects that there is weld seam in vehicle frame VIN code region, then prewarning unit carries out auditory tone cues early warning
With image early warning, temporary storage cell carries out storing the defective voucher of examination information, and controls main frame and upload inspection voucher to public
Peace portion motor vehicles Inspection and Supervision system, confirms that motor vehicles VIN code uniqueness is assert defective；If waveform is treated, analyze detection
For vehicle frame VIN code region no-welding-seam, then temporary storage cell carries out storing examination information evidence of compliance, and controls main frame and upload
Inspection voucher, to Ministry of Public Security's motor vehicles Inspection and Supervision system, confirms that motor vehicles VIN code uniqueness is assert qualified, detects complete.
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| CN108334864A (en) * | 2018-03-09 | 2018-07-27 | 合肥中科星翰科技有限公司 | A kind of Vehicle Identify Number Image Acquisition managing device and application method |
| CN109389099A (en) * | 2018-10-31 | 2019-02-26 | 广汽丰田汽车有限公司 | Vehicle checking method, device and readable storage medium storing program for executing |
| WO2019114603A1 (en) * | 2017-12-13 | 2019-06-20 | 深圳市道通科技股份有限公司 | Vehicle detection method and apparatus and vehicle diagnostic device |
| CN110032960A (en) * | 2019-03-29 | 2019-07-19 | 杭州诚道科技股份有限公司 | A kind of motor vehicle examination table electronic record rubbing film automatic positioning method |
| CN110503102A (en) * | 2019-08-27 | 2019-11-26 | 上海眼控科技股份有限公司 | Vehicle identification code detection method, device, computer equipment and storage medium |
| WO2020140611A1 (en) * | 2019-01-04 | 2020-07-09 | 平安科技（深圳）有限公司 | Vin code identification method based on image processing, device and medium |
| CN112960620A (en) * | 2021-04-02 | 2021-06-15 | 北京天地玛珂电液控制系统有限公司 | Forklift speed limiting safety control system |
| CN114359201A (en) * | 2021-12-29 | 2022-04-15 | 丽台(上海)信息科技有限公司 | Method for detecting quality of engraving identifier on automobile production line |
| US20220219731A1 (en) * | 2021-01-14 | 2022-07-14 | Cavh Llc | Intelligent information conversion for automatic driving |
| CN116645676A (en) * | 2023-07-20 | 2023-08-25 | 深圳市驿格科技有限公司 | Frame number information acquisition method and system |
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