CN203981115U - The calibration system of the car body three-dimensional reconstruction based on area-structure light active vision - Google Patents
The calibration system of the car body three-dimensional reconstruction based on area-structure light active vision Download PDFInfo
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- CN203981115U CN203981115U CN201420438407.8U CN201420438407U CN203981115U CN 203981115 U CN203981115 U CN 203981115U CN 201420438407 U CN201420438407 U CN 201420438407U CN 203981115 U CN203981115 U CN 203981115U
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Abstract
The utility model discloses a kind of calibration system of the car body three-dimensional reconstruction based on area-structure light active vision, be intended to solve existing two and three dimensions and demarcate the demarcation of synchronizeing that thing cannot be realized video camera and laser plane, processed complex, be difficult to realize the problem of the on-site proving that practicality has relatively high expectations, the calibration system of the car body three-dimensional reconstruction based on area-structure light active vision is mainly comprised of video camera target (1) and laser target (2), provide a kind of simple in structure, accuracy of detection is high, cumulative errors is little, telotism, easy and simple to handle, be easy to install, highly versatile, cost is lower, the met automobile of dependable performance detects industry and car body is carried out to the calibration system of the car body three-dimensional reconstruction based on area-structure light active vision of vision-based detection requirement.
Description
Technical field
The utility model relates to a kind of inspection machine of auto industry field, and in particular, it relates to a kind of calibration system of the car body three-dimensional reconstruction based on area-structure light active vision.
Background technology
For guaranteeing the safety traffic of automobile, the overload that rationally detects fast automobile is transfinited and size repacking, carries out every physical dimension of automobile and the vision measurement of angle is one of main test item of automobile detection field.At present, the measurement of automobile dimension and angle is mainly rested on to manual meter ruler and measure, efficiency is low, low precision, and intensity of workers is large.Adopt structured light machine vision metrology technology to automobile geometric parameter carry out non-contact detecting owing to having fast, accurately and the feature such as high reliability be expected to solve above technical bottleneck.Existing demarcation mode mainly by two dimension, demarcates thing or three-dimensional scaling thing is demarcated video camera, then by two dimension, demarcates thing laser plane is demarcated the position in camera coordinate system.But because the equation of laser plane is the equation under camera coordinate system, and actual conditions need to be measured the position coordinates of object under world coordinate system, therefore need to pass through coordinate conversion just can be by the coordinate conversion of optical plane and object intersection under world coordinate system, and error is larger.The utility model adopts the video camera target structure control laser target of processing fixed position, bottom surface groove to be marked on the position under world coordinate system, and then acquisition optical plane and laser target target intersection point three-dimensional coordinate, realize the demarcation of laser plane under world coordinate system and also synchronously completed the demarcation of video camera, system architecture is simple, be convenient to processing and transportation, improved the accuracy of calibration result and reduced two-dimentional demarcation thing demarcate in the calculated amount of iterative process, significant to the technical progress of auto industry detection field.
Summary of the invention
The utility model demarcates for current existing two and three dimensions the demarcation of synchronizeing that thing cannot be realized video camera and laser plane, volume is larger, processed complex, be difficult to realize the present situation of the on-site proving that practicality has relatively high expectations, provide a kind of simple in structure, accuracy of detection is high, cumulative errors is little, telotism, easy and simple to handle, be easy to installation, highly versatile, cost met automobile lower, dependable performance and detect industry and car body is carried out to the calibration system of the car body three-dimensional reconstruction based on area-structure light active vision of vision-based detection requirement.
Consult Fig. 1 to Fig. 4, for solving the problems of the technologies described above, the utility model adopts following technical scheme to be achieved.The calibration system of the car body three-dimensional reconstruction based on area-structure light active vision provided by the utility model includes video camera target and laser target.
Laser target is placed in the rectangular recess of video camera target bottom surface, and the two sides of laser target base number of a tender portion rectangular parallelepiped bloom overlap with the two sides at a right angle of rectangular recess.
Video camera target described in technical scheme is square steel plate that three grades the are large part of vertical welding modified Ageing Treatment mutually between two, the large rectangular recess such as the bottom surface uniform processing in top of video camera target, chessboard grid pattern is pasted in the two sides of video camera target.
Laser target described in technical scheme is welded by the steel rule of top and the rectangular parallelepiped bloom of bottom, the bottom surface of rule and bottom rectangular parallelepiped bloom and a lateral vertical, another parallel sided of rule and bottom rectangular parallelepiped bloom.
The beneficial effects of the utility model are:
(1) the utility model adopts the video camera target structure control laser target of processing fixed position, bottom surface groove to be marked on the position under world coordinate system, and then acquisition optical plane and laser target target intersection point three-dimensional coordinate, realize the demarcation of laser plane under world coordinate system and also synchronously completed the demarcation of video camera, this system architecture is simple, improved the accuracy of calibration result and reduced two-dimentional demarcation thing demarcate in the calculated amount of iterative process.
(2) critical part of the present utility model adopts etalon steel to process, and first, standard steel section output is large, and machining operation is few, makes simply, and production cost is lower; Secondly, as the important accessory of surveying instrument, adopt standard steel section to there is certain intensity, can be indeformable in long-term use, the precision that assurance is measured, can meet the requirement of national standard to measuring accuracy.
Accompanying drawing explanation
Fig. 1 is the use state axonometric drawing of the calibration system of the car body three-dimensional reconstruction based on area-structure light active vision;
Fig. 2 is the axonometric drawing of the calibration system of the car body three-dimensional reconstruction based on area-structure light active vision;
Fig. 3 is three-dimensional target 1 axonometric drawing of the calibration system of the car body three-dimensional reconstruction based on area-structure light active vision;
Fig. 4 is the axonometric drawing of height target 2 of the calibration system of the car body three-dimensional reconstruction based on area-structure light active vision;
In figure: 1. video camera target, 2. laser target, A laser plane.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Consult Fig. 1 to Fig. 4, the calibration system of the car body three-dimensional reconstruction based on area-structure light active vision includes video camera target 1 and laser target 2.
Video camera target 1 is square steel plate that three grades the are large part of vertical welding modified Ageing Treatment mutually between two, the large rectangular recess such as the bottom surface uniform processing in top of video camera target 1, chessboard grid pattern is pasted in the two sides of video camera target 1, laser target 2 is welded by the steel rule of top and the rectangular parallelepiped bloom of bottom, the bottom surface of rule and bottom rectangular parallelepiped bloom and a lateral vertical, another parallel sided of rule and bottom rectangular parallelepiped bloom, laser target 2 is placed in the rectangular recess of video camera target 1 bottom surface, the two sides at laser target 2 two sides of bottom rectangular parallelepiped bloom and a right angle of rectangular recess overlap.
The using method of the calibration system of the car body three-dimensional reconstruction based on area-structure light active vision: the calibration system of the car body three-dimensional reconstruction based on area-structure light active vision is placed on to a fixed position within the scope of the camera field of view of automobile vision detection system, laser target 2 is placed on respectively in the different grooves of video camera target 1 bottom surface, measuring system projecting laser plane A, by camera acquisition one width target image, image is carried out to filtering, gray scale strengthens, image is cut apart, extract the three-dimensional coordinate of the image coordinate of video camera target 1 two sides central point and the intersection point of three-dimensional coordinate and laser plane and laser target 2, according to the two dimensional image coordinate of video camera target and three dimensional space coordinate, adopt least square method, particle swarm optimization algorithm or genetic algorithm are demarcated video camera, according to the intersection point three-dimensional coordinate of laser plane and laser target 2, utilize least square method can obtain the optic plane equations of laser plane under world coordinate system, complete the synchronous demarcation of video camera and the optical plane of automobile vision detection system.
Claims (3)
1. the calibration system of the car body three-dimensional reconstruction based on area-structure light active vision, it is characterized in that, the calibration system of the described car body three-dimensional reconstruction based on area-structure light active vision is comprised of video camera target (1) and laser target (2);
Laser target (2) is placed in the rectangular recess of video camera target (1) bottom surface, and the two sides of laser target (2) bottom rectangular parallelepiped bloom overlap with the two sides at a right angle of rectangular recess.
2. according to the calibration system of the car body three-dimensional reconstruction based on area-structure light active vision claimed in claim 1, it is characterized in that described video camera target (1) is square steel plate that three grades the are large part of vertical welding modified Ageing Treatment mutually between two, the large rectangular recess such as the bottom surface uniform processing in top of video camera target (1), chessboard grid pattern is pasted in the two sides of video camera target (1).
3. according to the calibration system of the car body three-dimensional reconstruction based on area-structure light active vision claimed in claim 1, it is characterized in that described laser target (2) is welded by the steel rule of top and the rectangular parallelepiped bloom of bottom, the bottom surface of rule and bottom rectangular parallelepiped bloom and a lateral vertical, another parallel sided of rule and bottom rectangular parallelepiped bloom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420438407.8U CN203981115U (en) | 2014-08-05 | 2014-08-05 | The calibration system of the car body three-dimensional reconstruction based on area-structure light active vision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420438407.8U CN203981115U (en) | 2014-08-05 | 2014-08-05 | The calibration system of the car body three-dimensional reconstruction based on area-structure light active vision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203981115U true CN203981115U (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420438407.8U Withdrawn - After Issue CN203981115U (en) | 2014-08-05 | 2014-08-05 | The calibration system of the car body three-dimensional reconstruction based on area-structure light active vision |
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| Country | Link |
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| CN (1) | CN203981115U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104457610A (en) * | 2014-12-12 | 2015-03-25 | 浙江大学 | Solar condenser mirror surface measuring and adjusting method and device |
-
2014
- 2014-08-05 CN CN201420438407.8U patent/CN203981115U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104101300B (en) * | 2014-08-05 | 2016-06-29 | 吉林大学 | Calibration system based on the car body three-dimensional reconstruction of area-structure light active vision |
| CN104457610A (en) * | 2014-12-12 | 2015-03-25 | 浙江大学 | Solar condenser mirror surface measuring and adjusting method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141203 Effective date of abandoning: 20160629 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |