CN104406540B - Calibration system based on point to the automobile Shape measure structure light of initial point distance constraint - Google Patents
Calibration system based on point to the automobile Shape measure structure light of initial point distance constraint Download PDFInfo
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- CN104406540B CN104406540B CN201410723555.9A CN201410723555A CN104406540B CN 104406540 B CN104406540 B CN 104406540B CN 201410723555 A CN201410723555 A CN 201410723555A CN 104406540 B CN104406540 B CN 104406540B
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- structure light
- shape measure
- calibration system
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- point distance
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Abstract
The invention discloses a kind of calibration system based on point to the automobile Shape measure structure light of initial point distance constraint, it is intended to solve the problems, such as that current existing method cannot directly obtain laser plane equation under world coordinate system.Mainly it is made up of with demarcate bar (2) three-dimensional scaling plate (1) based on the camera calibration target of the automotive vision detecting system of spherical coordinate, there is provided a kind of simple structure, accuracy of detection are high, cumulative error is little, fully functional, easy to operate, be easily installed, highly versatile, the calibration system based on point to the automobile Shape measure structure light of initial point distance constraint that cost is relatively low, dependable performance met automotive check industry carries out non-contact detecting requirement to car body.
Description
Technical field
The present invention relates to a kind of calibration facility of the testing equipment of auto industry field, in particular, it is related to one kind
Calibration system based on point to the automobile Shape measure structure light of initial point distance constraint.
Background technology
To ensure the safety traffic of automobile, rationally the quickly overload and oversize of detection automobile and size repacking, carries out automobile
The vision measurement of every geometric angle be that automobile detection field predominantly detects one of project.At present, to automobile dimension and angle
The measurement of degree predominantly stays in manual meter ruler measurement, and efficiency is low, and low precision, intensity of workers are big.Using machine vision
The features such as e measurement technology carries out non-contact detecting due to quick, accurate and high reliability to automobile geometric parameter is expected to solve
Above technical bottleneck.As three-dimensional scaling thing can determine that video camera phase areal coordinate and three dimensional space coordinate by a photos
Transition matrix, therefore Fast Calibration can be realized；The stated accuracy of three-dimensional scaling thing is higher than two-dimensional calibrations thing simultaneously.But
Existing three-dimensional scaling thing directly cannot be demarcated to the laser plane of automobile Shap feature detection system.The present invention adopts three-dimensional scaling
Plate and the decomposable asymmetric choice net structure of demarcate bar combination, realize the demarcation of detecting system structure light under world coordinate system, system structure letter
It is single, it is easy to process and transports, the Spatial General 6 R position side of detecting system structure optical plane under world coordinate system can be directly obtained
Journey, improves the accuracy of automobile pattern testing result, and the technological progress to auto industry detection field is significant.
The content of the invention
The present invention cannot directly obtain the problem of laser plane equation under world coordinate system for current existing scaling method,
Optical plane position equation, simple structure, stated accuracy height, cumulative error under world coordinate system are directly obtained there is provided a kind of
It is little, fully functional, easy to operate, be easily installed, highly versatile, cost are relatively low, dependable performance met automotive check industry
The demarcation system based on point to the automobile Shape measure structure light of initial point distance constraint of vision-based detection requirement is carried out to automobile pattern
System.
Refering to Fig. 1 to Fig. 2, it is to solve above-mentioned technical problem, the present invention is adopted the following technical scheme that and is achieved.The present invention
There is provided based on point to initial point distance constraint automobile Shape measure structure light calibration system include three-dimensional scaling plate and
Demarcate bar.
The end summit of the circular cone of demarcate bar is overlapped with the common intersection of three pieces of rectangular steel plates of three-dimensional scaling plate.
Three-dimensional scaling plate described in technical scheme is mutually perpendicular to be welded by three pieces of rectangular steel plates, three-dimensional scaling plate
Inner surface pastes chessboard grid pattern.
Demarcate bar described in technical scheme is processed into by standard rod iron, and one end of demarcate bar processes coning, mark
The other end of fixed pole is plane, and chessboard grid pattern is pasted in plane.
The invention has the beneficial effects as follows：
(1) present invention cannot directly obtain asking for laser plane equation under world coordinate system for current existing scaling method
Topic, devises demarcate bar of the end with taper, realizes demarcate bar and three-dimensional scaling plate world coordinates using the summit of circular cone
Be the coincidence of origin, chessboard grid pattern is pasted as laser plane and the labelling of demarcate bar intersection point in the other end of demarcate bar, this
Plane one end of sample demarcate bar to distance between the origin of world coordinate system for demarcate bar length, using different demarcation rod ends
The constraint that portion is equal to bar length with optical plane joining distance can be set up optimal objective equation and then be realized under world coordinate system
The purpose of direct Calibration of Laser plane equation, the conversion due to entering coordinate system can obtain higher stated accuracy.
(2) major part of the invention is processed using etalon steel, and first, standard steel section yield is big, and machinery adds
Work operation is few, makes simple, and production cost is relatively low；Secondly, as the important accessory of measuring instrument, have one using standard steel section
Fixed intensity, can be indeformable in life-time service, it is ensured that the precision of measurement, can meet national standard and certainty of measurement is wanted
Ask.
Description of the drawings
Fig. 1 is the axonometric drawing based on point to the calibration system of the automobile Shape measure structure light of initial point distance constraint；
Fig. 2 is the axle based on point to the demarcate bar 2 of the calibration system of the automobile Shape measure structure light of initial point distance constraint
Mapping；
In figure：1. three-dimensional scaling plate, 2. demarcate bar.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings:
Refering to Fig. 1 to Fig. 2, included to the calibration system of the automobile Shape measure structure light of initial point distance constraint based on point
Three-dimensional scaling plate 1 and demarcate bar 2.
Three-dimensional scaling plate 1 is mutually perpendicular to be welded by three pieces of rectangular steel plates, the inner surface Sticky chessboard of three-dimensional scaling plate 1
Disk grid pattern.
Demarcate bar 2 is processed into by standard rod iron, and one end of demarcate bar 2 processes coning, the end summit of circular cone with
The common intersection of three pieces of rectangular steel plates of three-dimensional scaling plate 1 overlaps, and the other end of demarcate bar 2 is plane, and chessboard is pasted in plane
Grid pattern.
Using method based on point to the calibration system of the automobile Shape measure structure light of initial point distance constraint：Will based on point
The calibration system of the automobile Shape measure structure light constrained to initial point distance is placed on the video camera of automobile Shap feature detection system and regards
A fixed position in the range of, starts video camera and laser level, the conical end of demarcate bar is pinpointed and three-dimensional scaling
The origin of plate overlaps, and the characteristic point of the chessboard grid pattern of the demarcate bar other end passes through optical plane, by camera acquisition image, then
Demarcate bar is moved to into the another location of the characteristic point by optical plane of chessboard grid pattern, then by camera acquisition image, is adopted
After collection multiple image, characteristic point is set up to the equal constraint of initial point distance and solved, complete to constrain to initial point distance based on point
Automobile Shape measure structure light plane equation demarcation.
Claims (3)
1. it is a kind of based on the calibration system for putting the automobile Shape measure structure light that initial point distance is constrained, it is characterised in that described
Based on point to initial point distance constraint automobile Shape measure structure light calibration system by three-dimensional scaling plate (1) and demarcate bar
(2) constitute；
The end summit of the circular cone of demarcate bar (2) is overlapped with the common intersection of three pieces of rectangular steel plates of three-dimensional scaling plate (1).
2. according to the calibration system based on point to the automobile Shape measure structure light of initial point distance constraint described in claim 1,
It is characterized in that described three-dimensional scaling plate (1) is mutually perpendicular to be welded by three pieces of rectangular steel plates, three-dimensional scaling plate (1) it is interior
Side surface pastes chessboard grid pattern.
3. according to the calibration system based on point to the automobile Shape measure structure light of initial point distance constraint described in claim 1,
It is characterized in that described demarcate bar (2) is processed into by standard rod iron, one end of demarcate bar (2) processes coning, demarcates
The other end of bar (2) is plane, and chessboard grid pattern is pasted in plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410723555.9A CN104406540B (en) | 2014-12-02 | 2014-12-02 | Calibration system based on point to the automobile Shape measure structure light of initial point distance constraint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410723555.9A CN104406540B (en) | 2014-12-02 | 2014-12-02 | Calibration system based on point to the automobile Shape measure structure light of initial point distance constraint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104406540A CN104406540A (en) | 2015-03-11 |
| CN104406540B true CN104406540B (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410723555.9A Expired - Fee Related CN104406540B (en) | 2014-12-02 | 2014-12-02 | Calibration system based on point to the automobile Shape measure structure light of initial point distance constraint |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108627093A (en) * | 2018-06-20 | 2018-10-09 | 上汽大众汽车有限公司 | Supplemental measurement tool, system and method for screw thread hole site optical measuring method |
| CN112396660B (en) * | 2019-08-12 | 2024-01-09 | 华为云计算技术有限公司 | Method and system for determining optical center of camera |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759669A (en) * | 2014-01-03 | 2014-04-30 | 河南科技大学 | Monocular vision measuring method for large parts |
| CN104101300A (en) * | 2014-08-05 | 2014-10-15 | 吉林大学 | Surface structured light active vision based automobile body three-dimensional reconstruction calibration system |
| CN204188141U (en) * | 2014-12-02 | 2015-03-04 | 吉林大学 | Based on the calibration system of point to the automobile pattern detection architecture light of initial point distance restraint |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014215719A (en) * | 2013-04-23 | 2014-11-17 | 株式会社東芝 | Vehicle model determination device |
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2014
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759669A (en) * | 2014-01-03 | 2014-04-30 | 河南科技大学 | Monocular vision measuring method for large parts |
| CN104101300A (en) * | 2014-08-05 | 2014-10-15 | 吉林大学 | Surface structured light active vision based automobile body three-dimensional reconstruction calibration system |
| CN204188141U (en) * | 2014-12-02 | 2015-03-04 | 吉林大学 | Based on the calibration system of point to the automobile pattern detection architecture light of initial point distance restraint |
Non-Patent Citations (1)
| Title |
|---|
| 汽车车轮定位参数视觉检测***及检定方法的研究;徐观;《中国博士学位论文全文数据库 信息科技辑》;20090815(第8期);I140-66 * |
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| CN104406540A (en) | 2015-03-11 |
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