CN104089587A - One-dimensional annular calibration target of camera of automobile visual inspection system - Google Patents
One-dimensional annular calibration target of camera of automobile visual inspection system Download PDFInfo
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- CN104089587A CN104089587A CN201410381631.2A CN201410381631A CN104089587A CN 104089587 A CN104089587 A CN 104089587A CN 201410381631 A CN201410381631 A CN 201410381631A CN 104089587 A CN104089587 A CN 104089587A
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- automobile
- standard seat
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Abstract
The invention discloses a one-dimensional annular calibration target of a camera of an automobile visual inspection system, and aims at solving the problem that a calibration device of a conventional automobile visual inspection system is complex in structure. The one-dimensional annular calibration target of the camera of the automobile visual inspection system consists of an annular target base (1) and a target ball (2). The invention provides the one-dimensional annular calibration target which is simple in structure, high in detection process, small in accumulation error, complete in function, easy and convenient to operate, easy to mount, high in university, relatively low in cost and reliable in performance, and can meet the requirements of visual inspection on automobile bodies in the automobile industry on the camera of the automobile visual inspection system.
Description
Technical field
The present invention relates to a kind of inspection machine of auto industry field, in particular, it relates to a kind of video camera one dimension annular of automobile vision detection system and demarcates target.
Background technology
For ensureing 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 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.The present invention adopts the one-dimension calibration thing with inner geometry constraint as the demarcation thing of vision measurement, simple in structure, has improved the accuracy of calibration result and has reduced the calculated amount of iterative process, significant to the technical progress of auto industry detection field.
Summary of the invention
The present invention is directed to cannot realize at present and adopt small size one-dimension calibration device to carry out on-the-spot present situation to the video camera of automobile vision detection system, 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 video camera one dimension annular of the automobile vision detection system of vision-based detection requirement and demarcate target.
Consult Fig. 1 to Fig. 3, for solving the problems of the technologies described above, the present invention adopts following technical scheme to be achieved.The video camera one dimension annular of automobile vision detection system provided by the present invention is demarcated target and is included ring target standard seat and pellet.
Six pellets penetrate ring target standard seat from the opening part of ring target standard seat, and pellet is evenly arranged and is welded and fixed with ring target standard seat in ring target standard seat, after ring target standard seat and pellet welding, carry out bimestrial Ageing Treatment.
Ring target standard seat described in technical scheme is open annular part the modifier treatment that steel pole processes.
Pellet described in technical scheme is spherical steel components modifier treatment, and pellet is at a circular hole of middle part processing, and Circularhole diameter is greater than the cross-sectional diameter of ring target standard seat.
The invention has the beneficial effects as follows:
(1) the present invention is directed to the feature that unique point is looked unfamiliar at video camera imaging, employing Spherical pellet is the identification target to unique point as video camera, because the spherical projection in all angles is circle, therefore be more prone to adopt circular recognition methods is identified, reduced the difficulty of target identification.
(2) pellet of the present invention is evenly arranged on target seat, for calibration process has increased constraint condition, has reduced the number of times of interative computation, has improved the accuracy of calibration result.
(3) of the present invention is two-dimentional target, and critical part 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 guarantee is measured, can meet the requirement of national standard to measuring accuracy.
Brief description of the drawings
Fig. 1 is the axonometric drawing that the video camera one dimension annular of automobile vision detection system is demarcated target;
Fig. 2 is that the video camera one dimension annular of automobile vision detection system is demarcated the axonometric drawing of the ring target standard seat 1 of target;
Fig. 3 is the axonometric drawing that the video camera one dimension annular of automobile vision detection system is demarcated the pellet 2 of target;
In figure: 1. ring target standard seat, 2. pellet.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Consult Fig. 1 to Fig. 3, the video camera one dimension annular of automobile vision detection system is demarcated target and is included ring target standard seat 1 and pellet 2.
Open annular part modifier treatment that ring target standard seat 1 processes for steel pole, pellet 2 is spherical steel components modifier treatment, pellet 2 is at a circular hole of middle part processing, Circularhole diameter is greater than the cross-sectional diameter of ring target standard seat 1, six pellets 2 penetrate ring target standard seat 1 from the opening part of ring target standard seat 1, pellet 2 is evenly arranged and is welded and fixed with ring target standard seat 1 in ring target standard seat 1, after ring target standard seat 1 and pellet 2 welding, carries out bimestrial Ageing Treatment.
The video camera one dimension annular of automobile vision detection system is demarcated the using method of target: the video camera one dimension annular of automobile vision detection system is demarcated to the multiple optional positions within the scope of the camera field of view that target is placed on automobile vision detection system, by several target images of camera acquisition, image is carried out to filtering, gray scale strengthens, image is cut apart, the steps such as pellet centre coordinate extraction obtain pellet picture centre coordinate, according to pellet three-dimensional space position coordinate and image two dimension centre coordinate and video camera photocentre three's the constraint condition that conllinear retrains and pellet is evenly arranged in ring target standard seat, adopt least square method, particle swarm optimization algorithm or genetic algorithm, can obtain the transition matrix of the two-dimensional coordinate of the image characteristic point of three dimensional space coordinate and camera acquisition, complete the demarcation of the video camera of automobile vision detection system.
Claims (3)
1. the video camera one dimension of automobile vision detection system annular is demarcated a target, it is characterized in that, the video camera one dimension annular of described automobile vision detection system is demarcated target and is made up of ring target standard seat (1) and pellet (2);
Six pellets (2) penetrate ring target standard seat (1) from the opening part of ring target standard seat (1), pellet (2) is evenly arranged and is welded and fixed with ring target standard seat (1) in ring target standard seat (1), after ring target standard seat (1) and pellet (2) welding, carries out bimestrial Ageing Treatment.
2. demarcate target according to the video camera one dimension annular of automobile vision detection system claimed in claim 1, it is characterized in that open annular part modifier treatment that described ring target standard seat (1) processes for steel pole.
3. demarcate target according to the video camera one dimension annular of automobile vision detection system claimed in claim 1, it is characterized in that described pellet (2) is for spherical steel components modifier treatment, pellet (2) is at a circular hole of middle part processing, and Circularhole diameter is greater than the cross-sectional diameter of ring target standard seat (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410381631.2A CN104089587A (en) | 2014-08-05 | 2014-08-05 | One-dimensional annular calibration target of camera of automobile visual inspection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410381631.2A CN104089587A (en) | 2014-08-05 | 2014-08-05 | One-dimensional annular calibration target of camera of automobile visual inspection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104089587A true CN104089587A (en) | 2014-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410381631.2A Pending CN104089587A (en) | 2014-08-05 | 2014-08-05 | One-dimensional annular calibration target of camera of automobile visual inspection system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050189657A1 (en) * | 1998-01-16 | 2005-09-01 | Beaty Elwin M. | Electronic component products and method of manufacturing electronic component products |
| JP2007187549A (en) * | 2006-01-13 | 2007-07-26 | Tokyo Seimitsu Co Ltd | Visual inspection system for semiconductor, visual inspection method and semiconductor manufacturing apparatus |
| CN101299270A (en) * | 2008-05-27 | 2008-11-05 | 东南大学 | Multiple video cameras synchronous quick calibration method in three-dimensional scanning system |
| CN102155923A (en) * | 2011-03-17 | 2011-08-17 | 北京信息科技大学 | Splicing measuring method and system based on three-dimensional target |
| CN203981129U (en) * | 2014-08-05 | 2014-12-03 | 吉林大学 | The video camera one dimension annular of automobile vision detection system is demarcated target |
-
2014
- 2014-08-05 CN CN201410381631.2A patent/CN104089587A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050189657A1 (en) * | 1998-01-16 | 2005-09-01 | Beaty Elwin M. | Electronic component products and method of manufacturing electronic component products |
| JP2007187549A (en) * | 2006-01-13 | 2007-07-26 | Tokyo Seimitsu Co Ltd | Visual inspection system for semiconductor, visual inspection method and semiconductor manufacturing apparatus |
| CN101299270A (en) * | 2008-05-27 | 2008-11-05 | 东南大学 | Multiple video cameras synchronous quick calibration method in three-dimensional scanning system |
| CN102155923A (en) * | 2011-03-17 | 2011-08-17 | 北京信息科技大学 | Splicing measuring method and system based on three-dimensional target |
| CN203981129U (en) * | 2014-08-05 | 2014-12-03 | 吉林大学 | The video camera one dimension annular of automobile vision detection system is demarcated target |
Non-Patent Citations (1)
| Title |
|---|
| 王保丰等: "《航天器交会对接中测量靶标的两种设计方法》", 《宇航学报》 * |
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Application publication date: 20141008 |