CN106841235A - Image acquiring apparatus and image imaging method based on machine vision fabric knitting design - Google Patents
Image acquiring apparatus and image imaging method based on machine vision fabric knitting design Download PDFInfo
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
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- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
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Abstract
The present invention relates to a kind of image acquiring apparatus and image imaging method based on machine vision fabric knitting design, including：Fabric with weaving design is used as measurand；Line-scan digital camera, the imaging for obtaining weaving design；Image processor, for receiving the picture signal of line-scan digital camera output, and is processed；Light source, for fabric polishing；Because fabric knitting design floats over fabric face, therefore, Fang Yaoyou occurs simultaneously on the surface of the fabric for line source optical axis and line-scan digital camera optical axis；The concavo-convex degree of floral designs is also constituted according to the front for floating over fabric, the optical axis of light source and the camera lens optical axis line and the angle between textile plane of line-scan digital camera are adjusted respectively, complete the image zooming-out to fabric knitting design.The present invention extracts picture rich in detail, and precisely gather for successive image, the calculation process of software provides good condition.
Description
Technical field
Present invention relates particularly to a kind of image acquiring apparatus based on machine vision fabric knitting design and image into
Image space method, belongs to printing and dyeing textile equipment technical field.
Background technology
Fabric with weaving flower-shape, is commonly called as tmaterial in industry, i.e., in weaving by warp thread or weft yarn（Warp knitted yarns or latitude
Compile yarn）The design of raised solid shape is woven on fabric crisscrossly, the cloth for coming in this way is woven and is just cried jacquard weave
Cloth.Tmaterial, because tension force is irregular, easily causes the deformation of fabric weft yarn, frequently referred to skew of weft during finishing process in printing and dye-ing, because
This, the weaving flower-shape of fabric can produce oblique displacement in door width direction, so as to directly affect finished textile product quality so that fabric skew
Index be increasingly subject to pay attention to.The method that the detection of fabric skew is traditional is using photoelectricity transmission-type detection mode, i.e., using many
Group light source and detecting element-integrated silicon photocell are respectively placed in the both sides of fabric, and the directional light that light source sends is uniformly across tested
Fabric, the image of fabric weft yarn is integrated when weft yarn form generation changes by optical system imaging to integrated silicon photocell
Silicon photocell output signal is changed, and the signal is converted by treatment, obtains weft yarn deformation angle angle value.
During using photoelectricity transmission-type detection mode, for weaving design area more than certain group detecting element-integrated silicon photoelectricity
Pond work area region, photoelectricity transmission-type detection mode may simply obtain the intrinsic crisscross weft yarn form of design, it is impossible to
Judge webs to just genuine weft yarn deformation angle angle value；For heavily fabric, the directional light that light source sends cannot pass through quilt at all
Fabric is surveyed, the detection of photoelectricity transmission-type can not work.The weft yarn deformation angle angle value of heavily fabric cannot be detected.This all greatly limitation
The application scenario of photoelectricity transmission-type detection mode, also without solution well.
The content of the invention
It is an object of the invention to provide a kind of image for extracting clear fabric knitting design, and for successive image is accurate
Collection, the calculation process of software provide good condition image acquiring apparatus based on machine vision fabric knitting design and
Image imaging method, to overcome the deficiencies in the prior art.
In order to achieve the above object, first technical scheme of the invention is：It is a kind of to be spent based on machine vision fabric knitting
The image acquiring apparatus of shape pattern, including：
Fabric with weaving design is used as measurand；
Line-scan digital camera, the imaging for obtaining weaving design；
First selvage guide part and the second selvage guide part, for the guiding of fabric operation；
Image processor, the picture signal for receiving line-scan digital camera output, and is processed, described image processor and linear array
Phase mechatronics or optical fiber are connected；
Light source, for fabric polishing；
Camera collimation mechanism, for adjusting the angle between the camera lens optical axis line m of line-scan digital camera and textile plane or for adjusting
Angle between the camera lens optical axis line m of line-scan digital camera and the light source light axis n of light source；
Light source collimation mechanism, for adjust the angle between the light source light axis n of light source and the camera lens optical axis line m of line-scan digital camera or
For adjusting the angle between the light source light axis n of light source and textile plane；
The line-scan digital camera is installed with camera collimation mechanism and is fixedly connected；
The camera collimation mechanism is fixedly connected with frame；
The light source is installed with light source collimation mechanism and is fixedly connected；
The light source collimation mechanism is fixedly connected with frame；
Its innovative point is：The line-scan digital camera and light source are located at the same of the fabric between the first selvage guide part and the second selvage guide part
Side and the moving direction V orders along textile plane are reversed, and camera lens optical axis line m and the light source of the line-scan digital camera
Light source light axis n just intersects on the surface of the fabric；
When order is arranged：The light source light axis n of the camera lens optical axis line m of the line-scan digital camera and light source square phases on the surface of the fabric
The intersection point of friendship is O points,
The angle α of the camera lens optical axis line m of the line-scan digital camera and moving direction V of textile plane is 5 ° ~ 85 °,
The angle β of the light source light axis n of the light source and camera lens optical axis line m of line-scan digital camera is 5 ° ~ 85 °,
The angle α and angle β in same first plane, first plane perpendicular to textile plane and first plane with
The moving direction V of textile plane is parallel；
When reversing：The light source light axis n of the camera lens optical axis line m of the line-scan digital camera and light source square phases on the surface of the fabric
The intersection point of friendship is O ' points,
The angle α of the light source light axis n of the light source and moving direction V of textile plane ' it is 5 ° ~ 85 °,
The angle β ' of the camera lens optical axis line m of the line-scan digital camera and light source light axis n of light source is 5 ° ~ 85 °,
The angle α ' with angle β ' in same second plane, second plane is perpendicular to textile plane and second plane
Moving direction V with textile plane is parallel.
In above-mentioned first technical scheme, the light source uses white light source.
In above-mentioned first technical scheme, the line-scan digital camera is color camera or monochrome cameras.
In order to achieve the above object, second technical scheme of the invention is：It is a kind of to be spent based on machine vision fabric knitting
The image imaging method of shape pattern, using the image acquiring apparatus based on machine vision fabric knitting design described above,
Its innovative point is that methods described comprises the following steps：
A, the same side that the fabric between the first selvage guide part and the second selvage guide part is located in line-scan digital camera and light source, and along knitting
Under the tactic situations of moving direction V of object plane：
1. when fabric brings into operation between the first selvage guide part and the second selvage guide part along the moving direction V of textile plane,
Regulation camera collimation mechanism so that the camera lens optical axis line m of line-scan digital camera is with the angle α of the moving direction V of textile plane
5°~85°；
2. light source collimation mechanism is adjusted so that the light source light axis n of light source is with the angle β of the camera lens optical axis line m of line-scan digital camera
5°~85°；
3. camera collimation mechanism and light source collimation mechanism are adjusted so that the camera lens optical axis line m and light source of line-scan digital camera（3）Light source
Optical axis n just intersects on the surface of the fabric；
4. start image processor and continuously receive the design image of line-scan digital camera output；
5. light source collimation mechanism is finely tuned so that the image handled by image processor has the contrast of maximum；
6. camera collimation mechanism is finely tuned so that the image handled by image processor has the definition of maximum；
7. light source collimation mechanism and camera collimation mechanism are finely tuned so that the gray value that image processor is calculated meets extraction weft yarn and becomes
The requirement of shape angle value；
B, the same side that the fabric between the first selvage guide part and the second selvage guide part is located in line-scan digital camera and light source, and along fabric
Under the situation that the moving direction V of plane is reversed：
1. when fabric brings into operation between the first selvage guide part and the second selvage guide part along the moving direction V of textile plane,
Regulation light source collimation mechanism so that the angle α of the light source light axis n of light source and the moving direction V of textile plane ' for 5 ° ~
85°；
2. camera collimation mechanism is adjusted so that the camera lens optical axis line m of line-scan digital camera is with the angle β ' of the light source light axis n of light source
5°~85°；
3. light source collimation mechanism and camera collimation mechanism are adjusted so that the light source light axis n of light source and the camera lens light of line-scan digital camera
Axis m intersects with side on the surface of the fabric；
4. start image processor and continuously receive the design image of line-scan digital camera output；
5. light source collimation mechanism is finely tuned so that the image handled by image processor has the contrast of maximum；
6. camera collimation mechanism is finely tuned so that the image handled by image processor has the definition of maximum；
7. light source collimation mechanism and camera collimation mechanism are finely tuned so that the gray value that image processor is calculated meets extraction weft yarn and becomes
The requirement of shape angle value.
The good effect that has of the present invention is：Using the figure based on machine vision fabric knitting design of the invention
As after extraction element, realizing extraction picture rich in detail, and precisely gather for successive image, the calculation process of software provides good bar
Part.After employing the image imaging method based on machine vision fabric knitting design of the invention, due to fabric knitting flower
Shape pattern floats over fabric face, it requires that the optical axis of light source and the camera lens optical axis of line-scan digital camera overlap in fabric face（Hand over
Collection）；Will also according to float over fabric front constitute floral designs concavo-convex degree, respectively adjust line-scan digital camera camera lens optical axis and
The light source light axis of light source angle respectively between fabric, here, it is still desirable to ensure the optical axis and line-scan digital camera of line source
Camera lens optical axis occur simultaneously in fabric face, only in this way could obtain the image shadow-free for gathering, without dead angle, image border is clear
It is clear.
Brief description of the drawings
Fig. 1 is the structural representation of the first specific embodiment of the invention；
Fig. 2 is the structural representation of second specific embodiment of the invention.
Specific embodiment
Below in conjunction with accompanying drawing and the embodiment for being given, the present invention is further illustrated, but is not limited thereto.
Embodiment 1
As shown in figure 1, a kind of image acquiring apparatus based on machine vision fabric knitting design, including：
Fabric 1 with weaving design is used as measurand；
Line-scan digital camera 2, the imaging for obtaining weaving design；
First selvage guide part 6 and the second selvage guide part 9, for the guiding of the operation of fabric 1；
Image processor 7, the picture signal for receiving the output of line-scan digital camera 2, and is processed, described image processor 7 with
Line-scan digital camera 2 is electrically connected or optical fiber connection；
Light source 3, for the polishing of fabric 1；
Camera collimation mechanism 4, for adjusting the angle α between the camera lens optical axis line m of line-scan digital camera 2 and the plane of fabric 1
Light source collimation mechanism 5, for adjusting the folder between the light source light axis n of light source 3 and the camera lens optical axis line m of line-scan digital camera 2
Angle beta；
The line-scan digital camera 2 is installed with camera collimation mechanism 4 and is fixedly connected；
The camera collimation mechanism 4 is fixedly connected with frame 8；
The light source 3 is installed with light source collimation mechanism 5 and is fixedly connected；
The light source collimation mechanism 5 is fixedly connected with frame 8；
The line-scan digital camera 2 and light source 3 be located at the same side of the fabric 1 between the first selvage guide part 6 and the second selvage guide part 9 and along
The moving direction V orders of the plane of fabric 1 are reversed, and camera lens optical axis line m and the light source 3 of the line-scan digital camera 2 light source
Optical axis n intersects in the surface of fabric 1；
When being arranged by the order of Fig. 1：The camera lens optical axis line m of the line-scan digital camera 2 and light source light axis n of light source 3 is in fabric 1
The intersecting intersection point in surface is O points,
The angle α of the camera lens optical axis line m of the line-scan digital camera 2 and moving direction V of the plane of fabric 1 is 5 ° ~ 85 °,
The angle β of the light source light axis n of the light source 3 and camera lens optical axis line m of line-scan digital camera 2 is 5 ° ~ 85 °,
With angle β in same first plane, first plane is perpendicular to the plane of fabric 1 and first plane for the angle α
Moving direction V with the plane of fabric 1 is parallel.
In image acquiring apparatus based on machine vision fabric knitting design of the invention, the light source 3 is using white
Color light source.
The line-scan digital camera 2 is color camera or monochrome cameras.
Embodiment 2
As shown in Fig. 2 a kind of image acquiring apparatus based on machine vision fabric knitting design, including：
Fabric 1 with weaving design is used as measurand；
Line-scan digital camera 2, the imaging for obtaining weaving design；
First selvage guide part 6 and the second selvage guide part 9, for the guiding of the operation of fabric 1；
Image processor 7, the picture signal for receiving the output of line-scan digital camera 2, and is processed, described image processor 7 with
Line-scan digital camera 2 is electrically connected or optical fiber connection；
Light source 3, for the polishing of fabric 1；
Camera collimation mechanism 4, for adjusting the angle between the camera lens optical axis line m of line-scan digital camera 2 and the light source light axis n of light source 3
Degree angle β '；
Light source collimation mechanism 5, for adjusting the angle α between the light source light axis n of light source 3 and the plane of fabric 1 '；
The line-scan digital camera 2 is installed with camera collimation mechanism 4 and is fixedly connected；
The camera collimation mechanism 4 is fixedly connected with frame 8；
The light source 3 is installed with light source collimation mechanism 5 and is fixedly connected；
The light source collimation mechanism 5 is fixedly connected with frame 8；
The line-scan digital camera 2 and light source 3 be located at the same side of the fabric 1 between the first selvage guide part 6 and the second selvage guide part 9 and along
The moving direction V orders of the plane of fabric 1 are reversed, and camera lens optical axis line m and the light source 3 of the line-scan digital camera 2 light source
Optical axis n intersects in the surface of fabric 1；
By Fig. 2 when reversing：The camera lens optical axis line m of the line-scan digital camera 2 and light source light axis n of light source 3 is in fabric 1
The intersecting intersection point in surface is O ' points,
The angle α of the light source light axis n of the light source 3 and moving direction V of the plane of fabric 1 ' it is 5 ° ~ 85 °,
The angle β ' of the camera lens optical axis line m of the line-scan digital camera 2 and light source light axis n of light source 3 is 5 ° ~ 85 °,
The angle α ' with angle β ' in same second plane, second plane is perpendicular to the plane of fabric 1 and this is second flat
Face is parallel with the moving direction V of the plane of fabric 1.
In image acquiring apparatus based on machine vision fabric knitting design of the invention, the light source 3 is using white
Color light source.
The line-scan digital camera 2 is color camera or monochrome cameras.
Embodiment 3
As shown in figure 1, a kind of image imaging method based on machine vision fabric knitting design, using being based on described above
The image acquiring apparatus of machine vision fabric knitting design, methods described comprises the following steps：
The same side of the fabric 1 between the first selvage guide part 6 and the second selvage guide part 9 is located in line-scan digital camera 2 and light source 3, and along
Under the tactic situations of moving direction V of the plane of fabric 1：
1. when fabric 1 brings into operation between the first selvage guide part 6 and the second selvage guide part 9 along the moving direction V of the plane of fabric 1,
Regulation camera collimation mechanism 4 so that the angle α of the camera lens optical axis line m of the line-scan digital camera 2 and moving direction V of the plane of fabric 1
It is 5 ° ~ 85 °；
2. light source collimation mechanism 5 is adjusted so that the angle β of the light source light axis n of the light source 3 and camera lens optical axis line m of line-scan digital camera 2
It is 5 ° ~ 85 °；
3. camera collimation mechanism 4 and light source collimation mechanism 5 are adjusted so that the camera lens optical axis line m of line-scan digital camera 2 and the light of light source 3
Source optical axis n intersects in the surface of fabric 1；
4. start image processor 7 and continuously receive the design image of the output of line-scan digital camera 2；
5. light source collimation mechanism 5 is finely tuned so that the image handled by image processor 7 has the contrast of maximum；
6. camera collimation mechanism 4 is finely tuned so that the image handled by image processor 7 has the definition of maximum；
7. light source collimation mechanism 5 and camera collimation mechanism 4 are finely tuned so that the gray value that image processor 7 is calculated meets extraction latitude
The requirement of yarn deformation angle angle value.
Embodiment 4
As shown in Fig. 2 a kind of image imaging method based on machine vision fabric knitting design, using being based on described above
The image acquiring apparatus of machine vision fabric knitting design, methods described comprises the following steps：
The same side of the fabric 1 between the first selvage guide part 6 and the second selvage guide part 9 is located in line-scan digital camera 2 and light source 3, and along
Under the situation that the moving direction V of the plane of fabric 1 is reversed：
1. when fabric 1 brings into operation between the first selvage guide part 6 and the second selvage guide part 9 along the moving direction V of the plane of fabric 1,
Regulation light source collimation mechanism 5 so that the angle α of the light source light axis n of the light source 3 and moving direction V of the plane of fabric 1 ' be
5°~85°；
2. camera collimation mechanism 4 is adjusted so that the angle of the camera lens optical axis line m of the line-scan digital camera 2 and light source light axis n of light source 3
β ' is 5 ° ~ 85 °；
3. light source collimation mechanism 5 and camera collimation mechanism 4 are adjusted so that the light source light axis n of light source 3 and the mirror of line-scan digital camera 2
Head optical axis m intersects with the surface of fabric 1；
4. start image processor 7 and continuously receive the design image of the output of line-scan digital camera 2；
5. light source collimation mechanism 5 is finely tuned so that the image handled by image processor 7 has the contrast of maximum；
6. camera collimation mechanism 4 is finely tuned so that the image handled by image processor 7 has the definition of maximum；
7. light source collimation mechanism 5 and camera collimation mechanism 4 are finely tuned so that the gray value that image processor 7 is calculated meets extraction latitude
The requirement of yarn deformation angle angle value.
First selvage guide part 6 of the present invention and the second selvage guide part 9 can be fabric guide roll, or cloth guiding pole, may be used also
Being selvage guide plate.
The course of work of the invention：When the fabric 1 with weaving design is in the first selvage guide part 6 and the second selvage guide part 9
Between when moving, and it gathered using machine vision float over fabric face weaving-pattern, because fabric knitting design is floated over
Fabric face, therefore, Fang Yaoyou occurs simultaneously on the surface of the fabric for line source optical axis and line-scan digital camera optical axis；Will also be according to floating over
The front of fabric constitutes the concavo-convex degree of floral designs, camera collimation mechanism and light source collimation mechanism is adjusted respectively, i.e.,：Adjustment line
The mirror of angle α, the light source light axis n of adjustment light source and line-scan digital camera between the camera lens optical axis line m and textile plane of array camera
Angle α between angle β between head optical axis m, or the light source light axis n and textile plane of adjustment light source ' and adjustment line
Angle clamp angle beta between the camera lens optical axis line m of array camera and the light source light axis n of light source '.
Here, it is still desirable to ensure line source light source light axis and line-scan digital camera camera lens optical axis line on the surface of the fabric
Side occurs simultaneously, and the image shadow-free for gathering only in this way could be obtained, without dead angle, image edge clear.
In sum, image acquiring apparatus of the present invention based on machine vision fabric knitting design, by changing line
Angle between the optical axis of light source and the camera lens optical axis line of line-scan digital camera and textile plane, while ensureing the light source light of line source
The camera lens optical axis line of axis and line-scan digital camera just occurs simultaneously on the surface of the fabric, completes to carry the image of fabric knitting design
Take, the calculation process to the accurate collection of successive image, software provides good condition.
Claims (4)
1. a kind of image acquiring apparatus based on machine vision fabric knitting design, including：
Fabric with weaving design（1）As measurand；
Line-scan digital camera（2）, the imaging for obtaining weaving design；
First selvage guide part（6）With the second selvage guide part（9）, for fabric（1）The guiding of operation；
Image processor（7）, for receiving line-scan digital camera（2）The picture signal of output, and processed, described image processor
（7）With line-scan digital camera（2）Electrical connection or optical fiber connection；
Light source（3）, for fabric（1）Polishing；
Camera collimation mechanism（4）, for adjusting line-scan digital camera（2）Camera lens optical axis line m and fabric（1）Angle between plane or
For adjusting line-scan digital camera（2）Camera lens optical axis line m and light source（3）Light source light axis n between angle；
Light source collimation mechanism（5）, for adjusting light source（3）Light source light axis n and line-scan digital camera（2）Camera lens optical axis line m it
Between angle or for adjusting light source（3）Light source light axis n and fabric（1）Angle between plane；
The line-scan digital camera（2）With camera collimation mechanism（4）Installation is fixedly connected；
The camera collimation mechanism（4）With frame（8）It is fixedly connected；
The light source（3）With light source collimation mechanism（5）Installation is fixedly connected；
The light source collimation mechanism（5）With frame（8）It is fixedly connected；
It is characterized in that：The line-scan digital camera（2）With light source（3）It is located at the first selvage guide part（6）With the second selvage guide part（9）Between
Fabric（1）The same side and along fabric（1）The moving direction V orders of plane are reversed, and the line-scan digital camera（2）'s
Camera lens optical axis line m and light source（3）Light source light axis n in fabric（1）Surface intersect；
When order is arranged：The line-scan digital camera（2）Camera lens optical axis line m and light source（3）Light source light axis n in fabric（1）'s
The intersecting intersection point in surface is O points,
The line-scan digital camera（2）Camera lens optical axis line m and fabric（1）The angle α of the moving direction V of plane is 5 ° ~ 85 °,
The light source（3）Light source light axis n and line-scan digital camera（2）Camera lens optical axis line m angle β be 5 ° ~ 85 °,
With angle β in same first plane, first plane is perpendicular to fabric for the angle α（1）Plane and this is first flat
Face and fabric（1）The moving direction V of plane is parallel；
When reversing：The line-scan digital camera（2）Camera lens optical axis line m and light source（3）Light source light axis n in fabric（1）'s
The intersecting intersection point in surface is O ' points,
The light source（3）Light source light axis n and fabric（1）The angle α of the moving direction V of plane ' it is 5 ° ~ 85 °,
The line-scan digital camera（2）Camera lens optical axis line m and light source（3）Light source light axis n angle β ' be 5 ° ~ 85 °,
The angle α ' with angle β ' in same second plane, second plane is perpendicular to fabric（1）Plane and this second
Plane and fabric（1）The moving direction V of plane is parallel.
2. image acquiring apparatus based on machine vision fabric knitting design according to claim 1, its feature exists
In：The light source（3）Using white light source.
3. the image acquiring apparatus based on machine vision fabric knitting design according to claim 1 and 2, its feature
It is：The line-scan digital camera（2）It is color camera or monochrome cameras.
4. a kind of image imaging method based on machine vision fabric knitting design, any using such as claims 1 to 3
The image acquiring apparatus based on machine vision fabric knitting design described in, it is characterised in that methods described is included such as
Lower step：
A, in line-scan digital camera（2）With light source（3）It is located at the first selvage guide part（6）With the second selvage guide part（9）Between fabric（1）It is same
Side, and along fabric（1）Under the tactic situations of moving direction V of plane：
1. fabric is worked as（1）In the first selvage guide part（6）With the second selvage guide part（9）Between along fabric（1）The moving direction V of plane starts
During operation,
Regulation camera collimation mechanism（4）So that line-scan digital camera（2）Camera lens optical axis line m and fabric（1）The moving direction V of plane
Angle α be 5 ° ~ 85 °；
2. light source collimation mechanism is adjusted（5）So that light source（3）Light source light axis n and line-scan digital camera（2）Camera lens optical axis line m
Angle β be 5 ° ~ 85 °；
3. camera collimation mechanism is adjusted（4）With light source collimation mechanism（5）So that line-scan digital camera（2）Camera lens optical axis line m and light source
（3）Light source light axis n in fabric（1）Surface intersect；
4. image processor is started（7）And continuously receive line-scan digital camera（2）The design image of output；
5. light source collimation mechanism is finely tuned（5）So that image processor（7）Handled image has the contrast of maximum；
6. camera collimation mechanism is finely tuned（4）So that image processor（7）Handled image has the definition of maximum；
7. light source collimation mechanism is finely tuned（5）With camera collimation mechanism（4）So that image processor（7）The gray value of calculating meets
Extract the requirement of weft yarn deformation angle angle value；
B, in line-scan digital camera（2）With light source（3）It is located at the first selvage guide part（6）With the second selvage guide part（9）Between fabric（1）It is same
Side, and along fabric（1）Under the situation that the moving direction V of plane is reversed：
1. fabric is worked as（1）In the first selvage guide part（6）With the second selvage guide part（9）Between along fabric（1）The moving direction V of plane starts
During operation,
Regulation light source collimation mechanism（5）So that light source（3）Light source light axis n and fabric（1）The folder of the moving direction V of plane
Angle α ' is 5 ° ~ 85 °；
2. camera collimation mechanism is adjusted（4）So that line-scan digital camera（2）Camera lens optical axis line m and light source（3）Light source light axis n
Angle β ' be 5 ° ~ 85 °；
3. light source collimation mechanism is adjusted（5）With camera collimation mechanism（4）So that light source（3）Light source light axis n and line-scan digital camera
（2）Camera lens optical axis line m with fabric（1）Surface intersect；
4. image processor is started（7）And continuously receive line-scan digital camera（2）The design image of output；
5. light source collimation mechanism is finely tuned（5）So that image processor（7）Handled image has the contrast of maximum；
6. camera collimation mechanism is finely tuned（4）So that image processor（7）Handled image has the definition of maximum；
7. light source collimation mechanism is finely tuned（5）With camera collimation mechanism（4）So that image processor（7）The gray value of calculating meets
Extract the requirement of weft yarn deformation angle angle value.
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| CN201710082062.5A CN106841235B (en) | 2017-02-15 | 2017-02-15 | Image extraction device and image imaging method based on machine vision fabric weaving flower-shaped pattern |
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| CN201710082062.5A CN106841235B (en) | 2017-02-15 | 2017-02-15 | Image extraction device and image imaging method based on machine vision fabric weaving flower-shaped pattern |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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