CN106767535A - Contactless duplex measurement instrument and its measuring method - Google Patents
Contactless duplex measurement instrument and its measuring method Download PDFInfo
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- CN106767535A CN106767535A CN201710019562.4A CN201710019562A CN106767535A CN 106767535 A CN106767535 A CN 106767535A CN 201710019562 A CN201710019562 A CN 201710019562A CN 106767535 A CN106767535 A CN 106767535A
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- testee
- integrated manipulator
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- image
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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
- G01B11/2518—Projection by scanning of the object
- G01B11/2527—Projection by scanning of the object with phase change by in-plane movement of the patern
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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
Abstract
Invention is related to measure the apparatus and method field of object, especially discloses a kind of contactless duplex measurement instrument, it is characterised in that：Including the axle mobile platforms of X Y Z tri- for disposing object under test（1）, positioned at the axle mobile platforms of X Y Z tri-（1）The image capture module of top（2）, it is image capture module（2）With the axle mobile platforms of X Y Z tri-（1）The external light source of illumination is provided（3）, positioned at image capture module（2）Projection module of the periphery towards object under test（4）, integrated manipulator（5）And CP（6）, the integrated manipulator（5）The axle mobile platforms of connection X Y Z tri-（1）, image capture module（2）, external light source（3）, projection module（4）And CP（6）.The inventive structure is simple, and the accuracy of measurement is high, is suitable to object two dimension, three-dimensional measurement.
Description
Technical field
Apparatus and method field the present invention relates to measure object, more particularly, to a kind of contactless duplex measurement instrument and
Its measuring method.
Background technology
Three-dimensional contour outline measuring set based on area-structure light is succeeded application in field of precision measurement, but currently
The objective table of the contourgraph based on area-structure light be opaque black, the apparent height letter of testee can only be obtained
Breath, the outline for testee cannot be obtained accurately, therefore, many sizes of testee cannot be measured, nothing
Product is increasingly complicated during method meets modern precision manufacturing industry, the demand that measurement more becomes more meticulous.If by objective table optics
Glass is substituted, then the projection information of area-structure light understands partly transmission glass objective table, small part mirror-reflection, and this is to three-dimensionalreconstruction
Introduce noise so that the reduction of three-dimensional measurement precision.And, there is complex structure in existing measuring instrument, manufacturing cost grade high lacks
Point.Particularly, existing measuring instrument is only obtained in that the surface tri-dimensional profile data of testee, it is impossible to meet the needs of two-dimemsional number
It is analyzed under same coordinate system and treatment according to obtaining and needing to merge two-dimentional, three-dimensional data with three-dimensional data simultaneously
Requirement.
The content of the invention
The present invention is in order to overcome the deficiencies in the prior art, there is provided a kind of measuring accuracy is high, simple structure, is suitable to object two
Dimension, the contactless duplex measurement instrument of three-dimensional measurement and its measuring method.
To achieve these goals, invention uses following technical scheme：A kind of contactless duplex measurement instrument, its feature exists
In：Including the axle mobile platforms of X-Y-Z tri- for disposing object under test（1）, positioned at the axle mobile platforms of X-Y-Z tri-（1）Top
Image capture module（2）, it is image capture module（2）With the axle mobile platforms of X-Y-Z tri-（1）The external light source of illumination is provided（3）,
Positioned at image capture module（2）Projection module of the periphery towards object under test（4）, integrated manipulator（5）And CP（6）, the collection
Into controller（5）The connection axle mobile platforms of X-Y-Z tri-（1）, image capture module（2）, external light source（3）, projection module（4）And
CP（6）.Simple structure of the present invention, it is reasonable in design, can simultaneously carry out three-D profile and bidimensional image accurate measurement, it is easy to operate
And control.Particularly with complex structure, the various accurate testee of curved surface, by two dimension, three-dimensional fusion is measured can
The complicated one-stop measurement result of size is obtained, the features such as possess high accuracy, high efficiency.
Further, described image acquisition module（2）Including the industrial camera for setting gradually from the top down（21）, it is first saturating
Mirror module（22）, diaphragm（23）And the second lens module（24）；The industrial camera（21）It is color camera or black and white camera.
The design meets the requirement of doubly telecentric parallel light path simultaneously, can carry out high-acruracy survey.
Further, the projection module（4）Image capture module is symmetrically set in including two groups（2）The projection list of both sides
Unit；Each projecting cell includes the first light source（41）With positioned at the first light source（41）The lens module of lower section（42）, the first light source
（41）Connection integrated manipulator（5）；The external light source（3）Including surface source of light（31）With parallel backlight（32）, surface light
Source（31）It is installed on image capture module（2）Underface, with image capture module（2）Optical axis coincidence, surface source of light is annular nothing
Shadow light source, can launch white light, it is also possible to launch red, green, blue monochromatic light, and light-emitting zone and glow color can pass through
Integrated manipulator（5）Control to adjust, collimated backlight source（32）The connection axle mobile platforms of X-Y-Z tri-（1）Lower section and IMAQ mould
Block（2）, surface source of light（31）Optical axis coincidence, the collimated backlight source（32）And surface source of light（31）It is all connected with integrated manipulator（5）.
The symmetric design that the module passes through projection module, can effectively solve the problem that the optical fiber occlusion issue of unilateral projection module, obtain more
Comprehensive data.Measurement efficiency can be improved by the centralized Control of light source, projection and X-Y-Z mobile platforms, saving is manufactured into
This.Simultaneously, the surface source of light can complete the irradiation control of different directions and different colours, so as to obtain testee surface more
The characteristics of image of horn of plenty, completes high-precision measurement.
Further, the axle mobile platforms of the X-Y-Z tri-（1）Including the tunable optical glass loading for disposing object under test
Plane（12）With can drive tunable optical glass loading plane（12）Along the three axle mobile platform sheets that X-axis, Y-axis or Z-direction are moved
Body（11）, the three axles mobile platform body（11）With tunable optical glass loading plane（12）It is all connected with integrated manipulator（5）.
In addition, the invention also discloses a kind of measuring method for contactless duplex measurement instrument, including three-dimensional measurement
Process and two-dimensional measurement process：
The three-dimensional measurement process is as follows：
（a）Testee is placed in the axle mobile platforms of X-Y-Z tri-（1）On；
（b）PC（6）To integrated manipulator（5）Transmission task, integrated manipulator（5）After receiving task, projection module is controlled（4）
To testee irradiating structure light；
（c）Integrated manipulator（5）Image capture module is controlled again（2）The image of testee is shot, and in integrated manipulator（5）
In stored；
（d）Repeat step（a）-（c）, all images needed for obtaining；
（e）Integrated manipulator（5）All images are processed using decoding algorithm, obtains testee surface tri-dimensional profile point
Cloud data；
（f）Integrated manipulator（5）The cloud data is transmitted to the client software of PC；
The two-dimensional measurement process：Integrated manipulator（5）Control external light source（3）Testee is irradiated, then integrated manipulator
（5）Triggering image capture module（1）Shoot the two dimensional image of testee, last integrated manipulator（5）By image transmitting to PC
（6）.
Further, the three-dimensional measurement process also includes step（g）：When the whole that cannot disposably obtain tested region
During three-D profile information, integrated manipulator（5）The control axle mobile platforms of X-Y-Z tri-（1）Moved along X-axis, Y-axis or Z axis, and then band
Dynamic testee is moved relative to optical axis, repeat step（a）-（f）, make PC（6）All cloud datas needed for obtaining.
Further, the step（b）In, the projection module（4）The structure light irradiated to testee includes black and white
Striped is encoded and sinusoidal coding；
The step（b）In, the projection module（4）To structure light and step that testee irradiates（c）In, described image is adopted
Collection module（2）The detailed process of image for shooting testee is：
（A）The projection module（4）Encoded to testee projection black and white strip, the position of mobile black and white strip coding, image
Acquisition module（2）Shoot each black and white strip and encode corresponding image；
（B）The projection module（4）To testee reprojection sinusoidal coding, and mobile sinusoidal coding position, IMAQ
Module（2）The corresponding image of each sinusoidal coding is shot again.
Further, the step（e）Integrated manipulator（5）All images are processed using decoding algorithm, is obtained
The process of testee surface tri-dimensional profile cloud data is as follows：
（C）By step（A）The image of acquisition is decoded, and the cloud data of testee surface profile is obtained, by judging a little
The normal vector of cloud data obtains the coordinate information of testee apparent height mutation；
（D）Using occur height mutation coordinate as line of demarcation, by step（B）Image be divided into different blocks, using phase shift method
Decoding obtains the profile of each block.
Further, the step（a）Testee is placed in the axle mobile platforms of X-Y-Z tri-（1）After upper；When needs are obtained
When taking testee three-dimensional image information, integrated manipulator（5）The control axle mobile platforms of X-Y-Z tri-（1）Tunable optical glass carry
Object plane（11）In impermeable optical mode；And when needing to obtain testee two-dimensional image information, integrated manipulator（5）Control
The axle mobile platforms of X-Y-Z tri-（1）Tunable optical glass loading plane（12）In light transmission mode.
Principle based on area-structure light, by using the reference of tunable optical glass so that when doing projection three-dimensional measurement, loading
Platform is for nontransparent, it is necessary to when obtaining testee two dimension outline information, tunable optical objective table can be made to be transparent；Using
Bilateral telecentric beam path so that the depth of parallelism of light is greatly enhanced, two dimension, the fusion of three-dimensional data can significantly improve three-D profile
Certainty of measurement, particularly, due to it is in the past simple carry out three-dimensionalreconstruction by a certain tripleplane coding and decoding methods when it is equal
In the presence of different degrees of defect, the present invention proposes a kind of combination black and white strip coding and sinusoidal method, will by normal direction information
Image carries out accurate subregion, therefore, it is possible to combine various methods a little, and then carries out precision three-dimensional weight to testee surface
Structure and measurement are possibly realized.
In sum, inventive structure is simple, and the accuracy of measurement is high, is suitable to object two dimension, three-dimensional measurement.
Brief description of the drawings
Fig. 1 is the structural representation of inventive embodiments 1；
Fig. 2 is the image capture module structural representation of the embodiment of the present invention 1；
Fig. 3 is the projection module structural representation of the embodiment of the present invention 1；
Fig. 4 is the outer light source structural representation of the embodiment of the present invention 1；
Fig. 5 is the axle mobile platform structural representations of X-Y-Z tri- of the embodiment of the present invention 1；
Fig. 6 is the black and white strip coding schematic diagram of the embodiment of the present invention 2；
Fig. 7 is the sinusoidal coding schematic diagram of the embodiment of the present invention 2.
Specific embodiment
In order that those skilled in the art are better understood from scheme of the invention, below in conjunction with inventive embodiments in it is attached
Figure, clear, complete description is carried out to the technical scheme in inventive embodiments.
Embodiment 1
As Figure 1-5, a kind of contactless duplex measurement instrument, including X-Y-Z tri- axle mobile platform 1, image capture module 2,
External light source 3, projection module 4, integrated manipulator 5 and PC6.
As shown in figure 1, the axle mobile platforms 1 of the X-Y-Z tri- are used to dispose object under test, image capture module 2 to be located at X-
The top of tri- axle mobile platforms of Y-Z 1, and the figure acquisition module 2 is located at the surface of object under test.External light source 3 can be image
Acquisition module 2 and tri- axle mobile platforms of X-Y-Z 1 provide illumination, and projection module 4 is located at the periphery of image capture module 2, and inclines court
To object under test, the connection X-Y-Z tri- of the integrated manipulator 5 axle mobile platforms 1, image capture module 2, external light source 3, projection
Module 4 and PC6.
As shown in figure 3, described image acquisition module 2 includes the industrial camera 21, the first lens that set gradually from the top down
Module 22, the lens module 24 of diaphragm 23 and second；Wherein the first lens module 22, the second lens module 24 and the common structure of diaphragm 23
Telecentric lens in pairs, the industrial camera 21 be preferably color camera or black and white camera, its chip can be CCD chip or
COMS chips.
As shown in Fig. 2 the projection module 4 includes two groups of projecting cells for being symmetrically set in the both sides of image capture module 2；And
And two groups of projecting cell structures are identical.Specifically, each projecting cell includes the first light source 41 and lens module 42, the first light source
41 and lens module 42 constitute unilateral telecentric beam path so that optical axis of the light for projecting each parallel to lens module 42.Lens
Module 42 is located at the lower section of the first light source 41, and the first light source 41 and lens module 42 are inclined towards object under test, while first
Light source 41 and lens module 42 are respectively positioned on same straight line.First light source 41 connects integrated manipulator 5, is controlled by integrated manipulator 5
The pattern that projection module 4 is projected is made and determines, the pattern for being projected is pre-stored within integrated manipulator 5 and can compile
Volume, the light source control that the first light source 41 collectively constitutes projection module with the projecting cell in integrated manipulator 5 is combined, and can be base
In DMD（Digital micromirror elements）, LCD（Liquid crystal display）Or the projection theory of LCoS (liquid crystal on silicon).
As shown in figure 4, the external light source 3 includes surface source of light 31 and parallel backlight 32, the He of collimated backlight source 32
Surface source of light 31 is all connected with integrated manipulator 5.The surface source of light 31 is installed on immediately below image capture module 2, is adopted with image
The collection optical axis coincidence of module 2, surface source of light 31 is annular shadow-free light source, can launch white light, it is also possible to launch red, green, blue list
Coloured light, and light-emitting zone and glow color can be controlled to adjust by integrated manipulator 5.Source of parallel light 32 is installed on X-Y-Z
The lower section of three axle mobile platform 1, and with image capture module 2, the optical axis coincidence of surface source of light 31, can be controlled by integrated manipulator 5
Make its luminosity.
As shown in figure 5, the axle mobile platforms 1 of the X-Y-Z tri- include that tunable optical glass loading plane 12 and the movement of three axles are flat
Playscript with stage directions body 11, tunable optical glass loading plane 12 can drive tunable optical for disposing object under test, three axle mobile platform bodies 11
Glass loading plane 12 is moved along X-axis, Y-axis or Z-direction, and then drives object under test to be moved along X-axis, Y-axis or Z-direction
It is dynamic, and the axle mobile platforms 1 of X-Y-Z tri- can use existing structure, and here is omitted.The three axles mobile platform body 11 and can
Dimming glass loading plane 12 is all connected with integrated manipulator 5.Three axle mobile platform bodies 11 are driven and are controlled by integrated manipulator 5
System, can control the printing opacity of tunable optical glass loading plane 12 or light tight by integrated manipulator 5.
Embodiment 2
A kind of measuring method for contactless duplex measurement instrument, including three-dimensional measurement process and two-dimensional measurement process.
The three-dimensional measurement process is as follows：
（a）Testee is positioned on the axle mobile platforms 1 of X-Y-Z tri-.
（b）PC6 sends task to integrated manipulator 5, after integrated manipulator 5 receives task, as needed, control projection
Module 4 is to testee irradiating structure light.
（c）By the synchronizing function in integrated manipulator 5, integrated manipulator 5 controls image capture module 2 to shoot to be tied again
The image of the testee of structure light irradiation, and by captured image storage to integrated manipulator 5.
（d）Repeat step（a）-（c）, obtain required all images, that is, obtain a series of images.
（e）The data processing unit of integrated manipulator 5 is processed all images using decoding algorithm, obtains measured object
Body surface tri-dimensional profile cloud data.
（f）Integrated manipulator 5 transmits the cloud data to the client software of PC.
When cannot disposably obtain whole three-D profile information of tested region, step is also add（g）：Collection
Moved along X-axis, Y-axis or Z axis into the control axle mobile platforms 1 of X-Y-Z tri- of controller 5, and then drive testee relative to optical axis
It is mobile, repeat step（a）-（f）, PC6 is obtained required all cloud datas.
When needing to obtain testee two-dimensional image information, its two-dimentional measurement process is：Integrated manipulator 5 is controlled
External light source processed 3 irradiates testee, and then the triggering of integrated manipulator 5 image capture module 1 shoots the X-Y scheme of testee
Picture, last integrated manipulator 5 is by the client software of image transmitting to PC6.
In addition, as shown in Figure 6 and Figure 7, in order to further improve the accuracy of measurement, then, the step（b）In, institute
State projection module 4 includes that black and white strip is encoded and sinusoidal coding to the structure light that testee irradiates；The step（b）In, institute
State structure light and step that projection module 4 irradiates to testee（c）In, described image acquisition module 2 shoots testee
The detailed process of image is to carry out at twice：
（A）The projection module 4 is encoded to testee projection black and white strip, and the position of mobile black and white strip coding, image is adopted
Collection module 2 shoots each black and white strip and encodes corresponding image.This process is the step（b）In, the projection module 4 to
The structure light and step of testee irradiation（c）In, described image acquisition module 2 shoots the first time behaviour of the image of testee
Make.
（B）The projection module 4 to testee reprojection sinusoidal coding, and mobile sinusoidal coding position, image adopts
Collection module 2 shoots the corresponding image of each sinusoidal coding again.This process is the step（b）In, the projection module 4
To structure light and step that testee irradiates（c）In, described image acquisition module 2 shoots second of the image of testee
Operation.
Step（B）Afterwards, the step（e）Integrated manipulator 5 is processed all images using decoding algorithm, is obtained
The process of testee surface tri-dimensional profile cloud data is as follows：
（C）By step（A）The image of acquisition is decoded, and the cloud data of testee surface profile is obtained, by judging a little
The normal vector of cloud data obtains the coordinate information of testee apparent height mutation；
（D）Using occur height mutation coordinate as line of demarcation, by step（B）Image be divided into different blocks, using phase shift method
Decoding obtains the profile of each block；
Additionally, the accuracy in order to ensure measurement, while being convenient for measuring, the step（a）Testee is placed in the axles of X-Y-Z tri-
After on mobile platform 1；When needing to obtain testee three-dimensional image information, the control X-Y-Z tri- axle movements of integrated manipulator 5
The tunable optical glass loading plane 11 of platform 1 is in impermeable optical mode；And when needing to obtain testee two-dimensional image information,
The tunable optical glass loading plane 12 of the control axle mobile platforms 1 of X-Y-Z tri- of integrated manipulator 5 is in light transmission mode.
The application that the present invention passes through tunable optical glass so that device can either keep keeping non-in projection three-dimensional process of reconstruction
Pellucidity, overcome transparent objective table cannot reflective projection light problem, while using collimated backlight using its light transmission state
Source obtains accurate two-dimensional silhouette information.Simultaneously three-dimensional reconstruction is carried out by combining black and white strip and the flexible subregion of sine streak
Method so that three-dimensionalreconstruction can adapt to the surface accurate measurement of complexity.This contactless duplex measurement instrument and its measuring method
Abundant two and three dimensions data can be utilized, the accurate measurement of Various Complex size is carried out, it is also possible to is adapted to surface texture and is risen
Volt, the various testee of contour structure greatly improves the feasibility of the complicated measurement in precision manufactureing.
Obviously, described embodiment is only a part of embodiment of invention, rather than whole embodiments.Based on hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, should all belong to the scope of invention protection.
Claims (9)
1. a kind of contactless duplex measurement instrument, it is characterised in that：Including moving flat for the axles of X-Y-Z tri- for disposing object under test
Platform（1）, positioned at the axle mobile platforms of X-Y-Z tri-（1）The image capture module of top（2）, it is image capture module（2）And X-Y-Z
Three axle mobile platforms（1）The external light source of illumination is provided（3）, positioned at image capture module（2）Throwing of the periphery towards object under test
Shadow module（4）, integrated manipulator（5）And CP（6）, the integrated manipulator（5）The connection axle mobile platforms of X-Y-Z tri-（1）, image
Acquisition module（2）, external light source（3）, projection module（4）And CP（6）.
2. contactless duplex measurement instrument according to claim 1, it is characterised in that：Described image acquisition module（2）Bag
Include the industrial camera for setting gradually from the top down（21）, the first lens module（22）, diaphragm（23）And the second lens module（24）；
The industrial camera（21）It is color camera or black and white camera.
3. contactless duplex measurement instrument according to claim 1, it is characterised in that：The projection module（4）Including two
Group is symmetrically set in image capture module（2）The projecting cell of both sides；Each projecting cell includes the first light source（41）With positioned at
One light source（41）The lens module of lower section（42）, the first light source（41）Connection integrated manipulator（5）；The external light source（3）Bag
Include surface source of light（31）With parallel backlight（32）, surface source of light（31）It is installed on image capture module（2）Underface, with image
Acquisition module（2）Optical axis coincidence, surface source of light is annular shadow-free light source, collimated backlight source（32）Connection X-Y-Z tri- axle movements are flat
Platform（1）Lower section and image capture module（2）, surface source of light（31）Optical axis coincidence, the collimated backlight source（32）And surface source of light
（31）It is all connected with integrated manipulator（5）.
4. contactless duplex measurement instrument according to claim 1, it is characterised in that：The axle mobile platforms of the X-Y-Z tri-
（1）Including the tunable optical glass loading plane for disposing object under test（12）With can drive tunable optical glass loading plane（12）
Along the three axle mobile platform bodies that X-axis, Y-axis or Z-direction are moved（11）, the three axles mobile platform body（11）With tunable optical glass
Glass loading plane（12）It is all connected with integrated manipulator（5）.
5. a kind of measuring method for contactless duplex measurement instrument, including three-dimensional measurement process and two-dimensional measurement process：
The three-dimensional measurement process is as follows：
Testee is placed in the axle mobile platforms of X-Y-Z tri-（1）On；
PC（6）To integrated manipulator（5）Transmission task, integrated manipulator（5）After receiving task, projection module is controlled（4）To
Testee irradiating structure light；
Integrated manipulator（5）Image capture module is controlled again（2）The image of testee is shot, and in integrated manipulator（5）In
Stored；
Repeat step（a）-（c）, all images needed for obtaining；
Integrated manipulator（5）All images are processed using decoding algorithm, obtains testee surface tri-dimensional profile point cloud
Data；
Integrated manipulator（5）The cloud data is transmitted to PC（6）Client software；
The two-dimensional measurement process：Integrated manipulator（5）Control external light source（3）Testee is irradiated, then integrated manipulator
（5）Triggering image capture module（1）Shoot the two dimensional image of testee, last integrated manipulator（5）By image transmitting to PC
（6）.
6. the measuring method for contactless duplex measurement instrument according to claim 5, it is characterised in that：The three-dimensional
Measurement process also includes step（g）：When cannot disposably obtain whole three-D profile information of tested region, integrated manipulator
（5）The control axle mobile platforms of X-Y-Z tri-（1）Moved along X-axis, Y-axis or Z axis, and then drive testee to be moved relative to optical axis,
Repeat step（a）-（f）, make PC（6）All cloud datas needed for obtaining.
7. the measuring method for contactless duplex measurement instrument according to claim 6, it is characterised in that：The step
（b）In, the projection module（4）The structure light irradiated to testee includes that black and white strip is encoded and sinusoidal coding；
The step（b）In, the projection module（4）To structure light and step that testee irradiates（c）In, described image is adopted
Collection module（2）The detailed process of image for shooting testee is：
（A）The projection module（4）Encoded to testee projection black and white strip, the position of mobile black and white strip coding, image
Acquisition module（2）Shoot each black and white strip and encode corresponding image；
（B）The projection module（4）To testee reprojection sinusoidal coding, and mobile sinusoidal coding position, IMAQ
Module（2）The corresponding image of each sinusoidal coding is shot again.
8. the measuring method for contactless duplex measurement instrument according to claim 7, it is characterised in that：The step
（e）Integrated manipulator（5）All images are processed using decoding algorithm, obtains testee surface tri-dimensional profile point cloud number
According to process it is as follows：
（C）By step（A）The image of acquisition is decoded, and the cloud data of testee surface profile is obtained, by judging a little
The normal vector of cloud data obtains the coordinate information of testee apparent height mutation；
（D）Using occur height mutation coordinate as line of demarcation, by step（B）Image be divided into different blocks, using phase shift method
Decoding obtains the profile of each block.
9. the measuring method for contactless duplex measurement instrument according to claim 7, it is characterised in that：The step
（a）Testee is placed in the axle mobile platforms of X-Y-Z tri-（1）After upper；When needing to obtain testee three-dimensional image information,
Integrated manipulator（5）The control axle mobile platforms of X-Y-Z tri-（1）Tunable optical glass loading plane（11）In impermeable optical mode；
And when needing to obtain testee two-dimensional image information, integrated manipulator（5）The control axle mobile platforms of X-Y-Z tri-（1）Can
Dimming glass loading plane（12）In light transmission mode.
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| CN107272196A (en) * | 2017-08-03 | 2017-10-20 | 苏州天准科技股份有限公司 | A kind of method for weakening the annular optical illumination ghost of telecentric optical system |
| CN107677218A (en) * | 2017-10-13 | 2018-02-09 | 华东师范大学 | Dual camera high speed three-dimensional Information Collecting ＆ Processing device |
| CN107747915A (en) * | 2017-11-10 | 2018-03-02 | 华东师范大学 | Closed loop 3D vision device based on DMD |
| CN107830817A (en) * | 2017-11-10 | 2018-03-23 | 华东师范大学 | Active high speed three-dimensional sighting device based on DMD |
| CN108332684A (en) * | 2018-04-23 | 2018-07-27 | 中国科学院苏州生物医学工程技术研究所 | A kind of measuring three-dimensional profile method based on Structured Illumination microtechnic |
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