CN106871814A - Contour outline measuring set and method - Google Patents
Contour outline measuring set and method Download PDFInfo
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- CN106871814A CN106871814A CN201710032651.2A CN201710032651A CN106871814A CN 106871814 A CN106871814 A CN 106871814A CN 201710032651 A CN201710032651 A CN 201710032651A CN 106871814 A CN106871814 A CN 106871814A
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- 238000012360 testing method Methods 0.000 claims abstract description 66
- 238000005259 measurement Methods 0.000 claims abstract description 17
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- 230000033001 locomotion Effects 0.000 claims description 20
- 238000005516 engineering process Methods 0.000 abstract description 8
- 230000008859 change Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
- G01B11/254—Projection of a pattern, viewing through a pattern, e.g. moiré
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- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Image Analysis (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present invention provides a kind of contour outline measuring set and method, is related to e measurement technology.Contour outline measuring set includes：Cross light source, for launching cross light to measured zone；Imageing sensor, the projected image for gathering cross light；Terminal device, for according to projected image and cross light source and the position relationship of imageing sensor, determining the three-D profile of the object under test in measured zone.The step of contour measuring method, is corresponding with the function of aforesaid profile measurement apparatus.Cross light is launched to measured zone by cross light source, the projected image of cross light is gathered by imageing sensor, by terminal device according to projected image and the position relationship of cross light source and imageing sensor, determine the three-D profile of the object under test in measured zone, so as to obtain the three-D profile of object under test according to the two-dimensional silhouette of object under test itself, the structure of contour outline measuring set is not only simplify, and simplifies the measurement process of the three-D profile of measuring targets.
Description
Technical field
The present invention relates to e measurement technology, more particularly to a kind of contour outline measuring set and method.
Background technology
Measuring method based on structure light is a kind of active optical e measurement technology, and its general principle is by project structured light
Device projects controllable luminous point, light or smooth surface structure to object under test surface, and obtains image by video camera etc., by system
Geometrical relationship, the three-dimensional coordinate of object under test is calculated using triangle principle.Structural light measurement method is due to simple with calculating
List, small volume, price are low, wide range, the characteristics of be easily installed and safeguard, be widely used in measuring three-dimensional profile；Wherein, it is common
Have a light source measuring method, line source measuring method and area source measuring method.At present, conventional is based on dynamic light
Grating measuring technology, but the photoproduction in grating measuring technology is grown up to be a useful person and generally includes light source, lens, grating etc., structure is more complicated,
Measurement process is also more complicated.
The content of the invention
For drawbacks described above of the prior art, the present invention provides a kind of contour outline measuring set and method, can simplify wheel
The structure of wide measurement apparatus, and simplify measurement process.
The first aspect of the invention is to provide a kind of contour outline measuring set, including：
Cross light source, for launching cross light to measured zone；
Imageing sensor, the projected image for gathering the cross light；
Terminal device, for the position relationship according to the projected image and the cross light source and imageing sensor,
Determine the three-D profile of the object under test in the measured zone.
Further, the cross light source includes cross laser device, and the cross laser device is used for by measured zone
In object under test projection cross light.
Further, described image sensor is used for the projected image of cross light described in Real-time Collection.
Further, the terminal device is used to be obtained from the projected image elevation information of the object under test,
And according to the position relationship of the elevation information and the cross light source and imageing sensor, in determining the measured zone
The three-D profile of object under test.
Further, the elevation information includes：First elevation information and the second elevation information；First elevation information
It is to be obtained from described image sensor collection, the first projected image of the first light of the cross light；Described second
Elevation information is obtained from described image sensor collection, the second projected image of the second light of the cross light.
Further, the terminal device is additionally operable in the motion process of the object under test, according to be measured with described
First projected image of the first parallel light of the direction of motion of object, determines the movement velocity of the object under test.
Further, the terminal device is additionally operable to adjust the parameter attribute of the cross light, and the parameter attribute includes：
Length, brightness and/or position.
Another aspect of the present invention is to provide a kind of contour measuring method, including：
Launch cross light to measured zone；
Gather the projected image of the cross light；
According to the projected image and the cross light source and the position relationship of imageing sensor, the measurement zone is determined
The three-D profile of the object under test in domain.
Further, the projected image of the collection cross light includes：The perspective view of cross light described in Real-time Collection
Picture；It is described according to the projected image and the cross light source and the position relationship of imageing sensor, determine the measurement zone
The three-D profile of the object under test in domain, including：The elevation information of the object under test, and root are obtained from the projected image
According to the position relationship of the elevation information and the cross light source and imageing sensor, determine to be measured in the measured zone
The three-D profile of object；Wherein, the elevation information includes：First elevation information and the second elevation information；First height
Information is obtained from described image sensor collection, the first projected image of the first light of the cross light；It is described
Second elevation information is obtained from described image sensor collection, the second projected image of the second light of the cross light
's.
Further, the contour measuring method, also includes：In the motion process of the object under test, according to institute
The first projected image of parallel first light of the direction of motion of object under test is stated, the movement velocity of the object under test is determined.
Contour outline measuring set and method that the present invention is provided, cross light is launched by cross light source to measured zone, is passed through
Imageing sensor gathers the projected image of the cross light, by terminal device according to the projected image and the cross light
Source and the position relationship of imageing sensor, determine the three-D profile of the object under test in the measured zone, so as to according to be measured
The two-dimensional silhouette of object itself obtains the three-D profile of object under test, not only simplify the structure of contour outline measuring set, and letter
Change the measurement process of the three-D profile of measuring targets.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of contour outline measuring set of the present invention；
Fig. 2 is the structural representation of another embodiment of contour outline measuring set of the present invention.
Wherein, 100- crosses light source；200- imageing sensors；300- terminal devices；400- objects under test；The light of 101- first
Line；The light of 102- second.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.
Based on the embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of creative work is not made
The every other embodiment for obtaining, belongs to the scope of protection of the invention.In the case where not conflicting, following embodiments and implementation
Feature in example can be mutually combined.
Wherein, " on ", D score, " head ", the term of " tail " etc., be for describing each structure relative position in the accompanying drawings
Relation, only understanding for ease of narration, and be not used to limit enforceable scope of the invention, the change of its relativeness or tune
It is whole, under without essence change technology contents, when being also considered as enforceable category of the invention.
It should be noted that in the description of the invention, term " first ", " second " are only used for the different portion of convenient description
Part, and it is not intended that indicating or hint ordinal relation, relative importance or the implicit number for indicating indicated technical characteristic
Amount.Thus, " first " is defined, at least one this feature can be expressed or be implicitly included to the feature of " second ".
Fig. 1 is the structural representation of the embodiment of contour outline measuring set of the present invention.
Fig. 1 is refer to, the present embodiment provides a kind of contour outline measuring set, including：
Cross light source 100, for launching cross light to measured zone；
Imageing sensor 200, the projected image for gathering cross light；
Terminal device 300, for the position relationship according to projected image and cross light source 100 and imageing sensor 200,
Determine the three-D profile of the object under test 400 in measured zone.
Specifically, measured zone can be the projected area of cross light；Specific knot of the present embodiment for cross light source 100
Structure is not specifically limited, and those skilled in the art can be configured according to actual needs, as long as can be in measured zone
The surface projection cross light of object under test 400 to be measured；Such as cross light source 100 can be cross laser device.Image
Sensor 200 is arranged on the first-class video-photographic device of shooting, and imageing sensor 200 is connected with the communication of terminal device 300, with
The projected image that imageing sensor 200 is gathered is transferred to terminal device 300, terminal device 300 can possess for computer etc.
The equipment of familiar route processing function.
In the present embodiment, image taking sensor 200 is arranged on as a example by camera：Cross light source 100 with for carrying to be measured
There is the first predeterminable range between the horizontal plane of object 400, and the center line of cross light source 100 can have between the horizontal plane
There is the first default angle；There is the second predeterminable range, and the center line of the camera and the water between camera and the horizontal plane
There is the second default angle between plane；Correspondingly, there is the 3rd predeterminable range, cross between cross light source 100 and camera
There is the 3rd default angle, and the 3rd default angle and the first predeterminable range, the second predeterminable range between light source 100 and camera
Relevant, the 3rd default angle is relevant with the first default angle, the second default angle.The present embodiment is for the first predeterminable range,
Two predeterminable ranges and the first default angle, the second default angle are not specifically limited, and those skilled in the art can be according to reality
Border needs to be configured, and those skilled in the art can be configured according to actual needs.
A kind of contour outline measuring set that the present embodiment is provided, cross light is launched by cross light source 100 to measured zone, is led to
The projected image that imageing sensor 200 gathers cross light is crossed, by terminal device 300 according to projected image and cross light source
100 with the position relationship of imageing sensor 200, the three-D profile of the object under test 400 in measured zone is determined, so that using treating
The three-D profile that object 400 two-dimensional silhouette of itself obtains object under test 400 is surveyed, the knot of contour outline measuring set is not only simplify
Structure, and simplify the measurement process of the three-D profile of measuring targets 400.
Further, the projected image of the Real-time Collection cross light of imageing sensor 200, to obtain continuous projected image,
It is favorably improved the accuracy of three-D profile.
Further, terminal device 300 be used for from projected image obtain object under test 400 elevation information, and according to
Elevation information and cross light source 100 and the position relationship of imageing sensor 200, determine the object under test 400 in measured zone
Three-D profile.
Specifically, elevation information includes：First elevation information and the second elevation information；First elevation information is passed from image
Obtained in first projected image of the collection of sensor 200, cross light the first light 101；Second elevation information is from image
Obtained in second projected image of the collection of sensor 200, cross light the second light 102.
Wherein, with the length direction of the first light 101 as the direction of advance of object under test 400 and be object under test 400
Longitudinal direction, then the first projected image can be the longitudinal cross-section image of object under test 400, and the second light 102 and the first light 101 hang down
Straight to set, then the second projected image can be the lateral cross section image of object under test 400.First light of the projection of cross light source 100
Line 101 can measure the first elevation information of the longitudinal cross-section of object under test 400, and can measure the position of longitudinal cross-section
Change procedure；Second light 102 of the projection of cross light source 100 can measure lateral cross section in real time by the second light 102
The second elevation information, namely the second light 102 measurement the second elevation information be can with object under test 400 position move
Move and change.
In the present embodiment, when object under test 400 is static, for symmetrical or accurate symmetrical object under test 400, it is also possible to root
The first elevation information and the second elevation information according to object under test 400 determine three-D profile；When object under test 400 is moved, energy
It is enough that continuous two-dimensional silhouette is produced according to the motion of object under test 400 itself, so as to obtain complete three-D profile, effectively reduce
Extreme demand in measurement process.
Further, terminal device 300 is additionally operable in the motion process of object under test 400, according to object under test 400
Parallel the first light 101 of the direction of motion the first projected image, determine the movement velocity of object under test 400.
In the present embodiment, the first projected image is the longitudinal cross-section image of object under test 400, by longitudinal cross-section image
Change in location and time, so that it is determined that going out the movement velocity of object under test 400.
Fig. 2 is the structural representation of another embodiment of contour outline measuring set of the present invention.
Fig. 2 is refer to, further, terminal device 300 is additionally operable to adjust the parameter attribute of cross light, parameter attribute bag
Include：Length, brightness and/or position.
In the present embodiment, terminal device 300 can also be connected with cross light source 100, and ten are adjusted with by terminal device 300
The parameter attribute of word light.Wherein, length can be understood as the length of the first light 101 and the length of the second light 102, this area
The length and/or the length of the second light 102 that technical staff can according to actual needs to the first light 101 are adjusted, with
Make the length of the second light 102 more than the maximum transverse size of object under test 400, and make the first light 101 more than determinand
The longitudinal size preset value of body 400, is easy to measure the movement velocity of object under test 400.Brightness is the brightness of cross light, can be with
According to actual needs or environmental change adjusts the brightness of cross light, to improve the projected image of the collection of imageing sensor 200
Quality, and then help to measure the accuracy of side three-D profile.Position can be understood as the launching position of cross light.Surveyed in profile
Amount device start measurement before, it is necessary to above-mentioned parameter feature is set and debugged finish.
The contour outline measuring set that this implementation is provided is particularly suited for object under test such as vehicular traffic of gate valve class etc..
The present embodiment also provides a kind of contour measuring method, with above-mentioned contour outline measuring set the step of the contour measuring method
Function it is corresponding, its implementation process can be with similar to the above embodiments, and here is omitted.Contour measuring method, specifically may be used
To include：
Launch cross light to measured zone；
Gather the projected image of cross light；
According to projected image and cross light source and the position relationship of imageing sensor, the determinand in measured zone is determined
The three-D profile of body.
Further, the projected image of collection cross light includes：The projected image of Real-time Collection cross light；
According to projected image and cross light source and the position relationship of imageing sensor, the determinand in measured zone is determined
The three-D profile of body, including：The elevation information of object under test is obtained from projected image, and according to elevation information and cross light
Source and the position relationship of imageing sensor, determine the three-D profile of the object under test in measured zone；Wherein, elevation information bag
Include：First elevation information and the second elevation information；First elevation information is the first light from imageing sensor collection, cross light
Obtained in first projected image of line；Second elevation information is the second light from imageing sensor collection, cross light
Obtained in second projected image.
Further, contour measuring method also includes：In the motion process of object under test, according to the fortune with object under test
First projected image of the first parallel light of dynamic direction, determines the movement velocity of object under test.
A kind of contour measuring method that the present embodiment is provided, cross light is launched by cross light source to measured zone, is passed through
Imageing sensor gathers the projected image of cross light, by terminal device according to projected image and cross light source and image sensing
The position relationship of device, determines the three-D profile of the object under test in measured zone, so as to the two dimension wheel according to object under test itself
Exterior feature obtains the three-D profile of object under test, not only simplify the structure of contour outline measuring set, and simplify the three of measuring targets
Tie up the measurement process of profile.
One of ordinary skill in the art will appreciate that：Realize that all or part of step of the various embodiments described above can be by journey
Sequence instructs related hardware to complete.Foregoing program can be stored in a computer read/write memory medium.The program exists
During execution, the step of including above-mentioned each method embodiment is performed；And foregoing storage medium includes：ROM, RAM, magnetic disc or light
Disk etc. is various can be with the medium of store program codes.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
Pipe has been described in detail with reference to foregoing embodiments to the present invention, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of contour outline measuring set, it is characterised in that including：
Cross light source, for launching cross light to measured zone；
Imageing sensor, the projected image for gathering the cross light；
Terminal device, for the position relationship according to the projected image and the cross light source and imageing sensor, it is determined that
The three-D profile of the object under test in the measured zone.
2. contour outline measuring set according to claim 1, it is characterised in that the cross light source includes cross laser device,
The cross laser device is used to project cross light to by the object under test in measured zone.
3. contour outline measuring set according to claim 1 and 2, it is characterised in that described image sensor is used to adopt in real time
Collect the projected image of the cross light.
4. the contour outline measuring set according to claim any one of 1-3, it is characterised in that the terminal device is used for from institute
The elevation information that the object under test is obtained in projected image is stated, and according to the elevation information and the cross light source and figure
As the position relationship of sensor, the three-D profile of the object under test in the measured zone is determined.
5. contour outline measuring set according to claim 4, it is characterised in that the elevation information includes：First height is believed
Breath and the second elevation information；First elevation information is the first light from described image sensor collection, the cross light
Obtained in first projected image of line；Second elevation information is from described image sensor collection, the cross light
The second light the second projected image in obtain.
6. contour outline measuring set according to claim 5, it is characterised in that the terminal device is additionally operable to described to be measured
In the motion process of object, according to the first projected image of first light parallel with the direction of motion of the object under test, really
The movement velocity of the fixed object under test.
7. contour outline measuring set according to claim 4, it is characterised in that the terminal device is additionally operable to regulation described ten
The parameter attribute of word light, the parameter attribute includes：Length, brightness and/or position.
8. a kind of contour measuring method, it is characterised in that including：
Launch cross light to measured zone；
Gather the projected image of the cross light；
According to the position relationship of the projected image and the cross light source and imageing sensor, in determining the measured zone
Object under test three-D profile.
9. contour measuring method according to claim 8, it is characterised in that the projected image of the collection cross light
Including：The projected image of cross light described in Real-time Collection；
It is described according to the projected image and the cross light source and the position relationship of imageing sensor, determine the measurement zone
The three-D profile of the object under test in domain, including：The elevation information of the object under test, and root are obtained from the projected image
According to the position relationship of the elevation information and the cross light source and imageing sensor, determine to be measured in the measured zone
The three-D profile of object；Wherein, the elevation information includes：First elevation information and the second elevation information；First height
Information is obtained from described image sensor collection, the first projected image of the first light of the cross light；It is described
Second elevation information is obtained from described image sensor collection, the second projected image of the second light of the cross light
's.
10. contour measuring method according to claim 9, it is characterised in that also include：
In the motion process of the object under test, according to the of first light parallel with the direction of motion of the object under test
One projected image, determines the movement velocity of the object under test.
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| CN201710032651.2A CN106871814A (en) | 2017-01-16 | 2017-01-16 | Contour outline measuring set and method |
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| CN201710032651.2A CN106871814A (en) | 2017-01-16 | 2017-01-16 | Contour outline measuring set and method |
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| CN109489586A (en) * | 2018-12-21 | 2019-03-19 | 西安交通大学 | Off-axis round bar line projection measurement phase zero points method for solving based on two dimensional scales |
| CN109751987A (en) * | 2019-01-24 | 2019-05-14 | 江苏理工学院 | A kind of vision laser locating apparatus and localization method for mechanical actuating mechanism |
| CN114252025A (en) * | 2020-09-20 | 2022-03-29 | 浙江四点灵机器人股份有限公司 | Multi-parallel line laser object three-dimensional contour measuring device and measuring method |
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Application publication date: 20170620 |