CN105178149B - Projection type calibration system of machine vision detection system for vehicle-mounted road cracks - Google Patents
Projection type calibration system of machine vision detection system for vehicle-mounted road cracks Download PDFInfo
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- CN105178149B CN105178149B CN201510526742.2A CN201510526742A CN105178149B CN 105178149 B CN105178149 B CN 105178149B CN 201510526742 A CN201510526742 A CN 201510526742A CN 105178149 B CN105178149 B CN 105178149B
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- vehicle
- machine vision
- calibration system
- level gauge
- road surface
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Abstract
The invention discloses a projection type calibration system of a machine vision detection system for vehicle-mounted road cracks. The projection type calibration system aims at solving the problem that currently, calibration on a vehicle-mounted road primary crack collecting system based on machine vision can not be achieved. The calibration system is mainly composed of a projector (1), a receiving plate (2) and a level gauge (3). According to the projection type calibration system of the machine vision detection system for the vehicle-mounted road cracks, the cost is low, the structure is simple, the detection accuracy is high, the accumulative errors are small, the functions are complete, the operation is easy and convenient, the installation is easy, the universality is high, the performance is reliable, and the requirements of a road primary crack detection system in a small view filed can be met.
Description
Technical field
The present invention relates to a kind of calibration equipment of the testing equipment in Vehicle Detection field, in particular, it is related to one kind
The projection calibration system of vehicle-mounted road surface crackle Machine Vision Inspecting System.
Background technology
Highway pavement crack detection is one of important research content of traffic engineering subject, and its Research Significance is to seek to protect
Barrier road surface bearing capacity is optimum, vehicle ride performance is optimal, road traffic accident is minimum, the path formation that fuel consumption is minimum
Property detection scheme, be that highway safeguards that in advance the sufficient advanced technology of offer ensures and theory support, reach road harmonious with people, vehicle
Unified purpose.
The end of the year 2011, the highway mileage that China is open to the traffic has reached 8.5 ten thousand kilometers.Total mileage of highway it is quick
Increase the economic development to each department and serve very important impetus, while the life-time service of highway also gives highway maintenance
Bring unprecedented challenge.On the one hand, the problems such as traffic flow increases sharply, high capacity waggon overloads road pavement is destroyed increasingly
Seriously；On the other hand, the construction of large-scale engineering machinery can cause the long-time congestion of highway, serious shadow during maintenance of surface
Ring road passage capability.Therefore, in 2012 end of the year China's motor vehicles car recoverable amounts up under the severe background of 2.4 hundred million, utilize
Advanced technology is theoretical to carry out periodic detection and quantitative assessment with detection method road pavement crackle so as in zone of reasonableness and long-pending
Pole carries out the early stage maintenance on road surface, to the service life for extending highway, the traffic capacity for improving road, the traveling peace for ensureing automobile
Maintenance cost that is complete and reducing highway has important theory significance and is widely applied prospect.
At present, manual measurement is predominantly stayed in the detection of road crackle, efficiency is low, low precision, staff's work is strong
Degree is big.Further realize that the method for crack detection evaluation solves above technical bottleneck using machine vision collection pavement image, because
Technological progress of the projection calibration system of this research vehicle-mounted road surface crackle Machine Vision Inspecting System to Vehicle Detection field has
It is significant.
The content of the invention
The present invention is for realizing at present to being examined and determine based on the nascent crackle acquisition system of machine vision vehicle-mounted road surface
Present situation, provide that a kind of cost is relatively low, simple structure, accuracy of detection are high using the combination of projector, receiver board and level gauge,
Cumulative error is little, fully functional, easy to operate, be easily installed, road in the range of highly versatile, the met small field of view of dependable performance
The projection calibration system of the vehicle-mounted road surface crackle Machine Vision Inspecting System that the nascent flaw detection system in face is required.
It is to solve above-mentioned technical problem refering to Fig. 1, the present invention is adopted the following technical scheme that and is achieved.The present invention is carried
For the projection calibration system of vehicle-mounted road surface crackle Machine Vision Inspecting System include projector, receiver board and level gauge.
On the ground, the upper surface of receiver board overlaps level gauge horizontal positioned with the horizontal laser light datum level of level gauge, throws
Shadow instrument is positioned over diagonally downward the oblique upper of receiver board, and projector is by standard road surface picture projection in the upper surface of receiver board.
Level gauge described in technical scheme is laser demarcation formula level gauge.
Receiver board described in technical scheme is the cuboid part of steel plate processing, and receiver board Surface Machining is diffuse-reflectance table
Face.
Projector described in technical scheme is universal projector.
The invention has the beneficial effects as follows：
(1) present invention is realized various not in a small range using the image of the arbitrarily known road surface crackle of projector
With the demarcation of crack image, system structure is simple, complete function, realizes crackle acquisition system measurement road nascent to vehicle-mounted road surface
Comprehensive calibrating of facial cleft print image.
(2) major part of the invention is processed using standard steel section, and first, standard steel section yield is big, machining
Operation is few, and production cost is relatively low；Secondly, as the important accessory of measuring instrument, there is certain intensity, energy using standard steel section
It is enough indeformable in life-time service, it is ensured that the precision of measurement, requirement of the national standard to certainty of measurement can be met.
Description of the drawings
Fig. 1 is the shaft side figure of the projection calibration system of vehicle-mounted road surface crackle Machine Vision Inspecting System；
In figure：1. projector, 2. receiver board, 3. level gauge.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail:
Refering to Fig. 1, the projection calibration system of vehicle-mounted road surface crackle Machine Vision Inspecting System includes projector 1, connects
Receive plate 2 and level gauge 3.
Level gauge 3 is laser demarcation formula level gauge, and the horizontal positioned of level gauge 3 is on the ground.
Receiver board 2 be steel plate processing cuboid part, the Surface Machining of receiver board 2 be diffuse-reflectance surface, receiver board 2 it is upper
Surface overlaps with the horizontal laser light datum level of level gauge 3.
Projector 1 is universal projector, and projector 1 is positioned over diagonally downward the oblique upper of receiver board 2, and projector 1 will be marked
Quasi- road surface picture projection is in the upper surface of receiver board 2.
The using method of the projection calibration system of vehicle-mounted road surface crackle Machine Vision Inspecting System：The reception of verification system
Plate 2 is placed on the underface of the video camera of detecting system, by the leveling of level gauge 3 and place on the ground, the upper surface of receiver board 2
It is adjusted to and is overlapped with the laser plane of level gauge 3, open projector 1 by road surface picture projection in the upper surface of receiver board 2, passes through
Standard road surface picture on the camera acquisition receiver board 2 of detecting system, it is contrasted with the testing result of detecting system
Complete the calibrating to the nascent crackle acquisition system of vehicle-mounted road surface.
Claims (3)
1. a kind of projection calibration system of vehicle-mounted road surface crackle Machine Vision Inspecting System, it is characterised in that described is vehicle-mounted
The projection calibration system of road surface crackle Machine Vision Inspecting System is made up of projector (1), receiver board (2) and level gauge (3)；
Level gauge (3) horizontal positioned on the ground, the upper surface of receiver board (2) and the horizontal laser light datum level weight of level gauge (3)
Close, projector (1) is positioned over diagonally downward the oblique upper of receiver board (2), and projector (1) is by standard road surface picture projection in reception
The upper surface of plate (2).
2. according to the projection calibration system of the vehicle-mounted road surface crackle Machine Vision Inspecting System described in claim 1, its feature
Level gauge (3) described in being is laser demarcation formula level gauge.
3. according to the projection calibration system of the vehicle-mounted road surface crackle Machine Vision Inspecting System described in claim 1, its feature
The cuboid part that receiver board (2) described in being is processed for steel plate, receiver board (2) Surface Machining is diffuse-reflectance surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510526742.2A CN105178149B (en) | 2015-08-25 | 2015-08-25 | Projection type calibration system of machine vision detection system for vehicle-mounted road cracks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510526742.2A CN105178149B (en) | 2015-08-25 | 2015-08-25 | Projection type calibration system of machine vision detection system for vehicle-mounted road cracks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105178149A CN105178149A (en) | 2015-12-23 |
| CN105178149B true CN105178149B (en) | 2017-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510526742.2A Expired - Fee Related CN105178149B (en) | 2015-08-25 | 2015-08-25 | Projection type calibration system of machine vision detection system for vehicle-mounted road cracks |
Country Status (1)
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| CN (1) | CN105178149B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841934B (en) * | 2016-06-15 | 2018-01-12 | 吉林大学 | The test system of vehicle-mounted road surface crackle Active visual inspection system illumination effect |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2754058B1 (en) * | 1996-10-02 | 1998-12-18 | Etat Francais Laboratoire Cent | METHOD FOR DETECTING SURFACE DEFECTS ON A TEXTURED SURFACE |
| CN101422787B (en) * | 2008-12-10 | 2011-04-20 | 北京科技大学 | Strip-steel flatness measuring method based on single-step phase-shift method |
| CN202298429U (en) * | 2011-09-01 | 2012-07-04 | 华澳融通(北京)科技有限公司 | Novel laser-fill-light-technology-based pavement damage detection system |
| CN103196921B (en) * | 2013-04-03 | 2015-07-15 | 中国民航大学 | Vehicle-mounted airport pavement damage microtopography image acquisition system and control evaluation method |
| CN104655639A (en) * | 2014-12-23 | 2015-05-27 | 北京恒达锦程图像技术有限公司 | Pavement crack detection method capable of accurately acquiring crack characteristics and pavement crack detection system capable of accurately acquiring crack characteristics |
| CN205062632U (en) * | 2015-08-25 | 2016-03-02 | 吉林大学 | On -vehicle road surface crackle machine vision detecting system's projection calibration system |
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Granted publication date: 20170419 Termination date: 20170825 |