CN105628603B - Fabric pincher analytical equipment - Google Patents
Fabric pincher analytical equipment Download PDFInfo
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- CN105628603B CN105628603B CN201610135597.XA CN201610135597A CN105628603B CN 105628603 B CN105628603 B CN 105628603B CN 201610135597 A CN201610135597 A CN 201610135597A CN 105628603 B CN105628603 B CN 105628603B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
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Abstract
The present invention relates to fabric test technical field, a kind of fabric pincher analytical equipment and fabric pincher analysis method are disclosed.Fabric analysis method includes the following steps：Fabric is around on roller；The roller rotates around own axes and the fabric is driven to rotate；Folding mechanism oppresses the fabric and forms corrugated surface；Camera shooting mechanism acquires the corrugated surface in the image on roller side edge, and sends picture signal to processing mechanism；The processing mechanism generates the 3-D graphic of the corrugated surface according to described image signal；The characteristic parameter of the fabric is extracted from the 3-D graphic, and obtains test result.Using the fabric pincher analytical equipment of the fabric pincher analysis method not only it can be concluded that the 3-dimensional image model of fabric pincher, and there is the advantage of low cost.
Description
Technical field
The present invention relates to fabric test technical field, in particular to a kind of fabric pincher analytical equipment and fabric pincher analysis
Method.
Background technique
In daily life, the fabric for constituting dress material often will receive external force in use.These external force may
The deformation such as irregular fine wrinkle, arch camber are generated in fabric surface.These deformation not only damage appearance of fabrics, but also can significantly reduce
The durability of fabric.And in these deformation, some can be replied naturally, and more some can not be replied.
Since first-class fabric usually requires have good wrinkle resistance and deformation-recovery ability, the wrinkle of fabric are returned
Renaturation can examine one of the important indicator of fabric quality.
Existing and current crease recovery properties of woven fabrics evaluation mostly uses appearance method.So-called appearance method is exactly big in standard
Under air pressure conditions, apply scheduled pressure to fabric to be tested with the device that crumples of standard, and kept for a period of time, then again
Fabric to be tested and three-dimensional shine with reference to sample are compared, are evaluated outside fabric to be measured by damping fabric to be tested under standard atmospheric conditions
It sees.
In general, the evaluation process of appearance method individually comments every piece of fabric to be measured by three trained observers
Grade, and personal experience according to the observation selects the three-dimensional plastic scale closest with fabric to be measured, finally calculates every piece and knits
The average value of each observed result of object.
This method is not only higher to evaluation and test environmental requirement due to relying on artificial evaluation, and because there are huge for human factor
Big experimental error.
In addition, crease recovery can also restore the method evaluation at angle with measurement elasticity in Unite States Standard and China's national standard.
However, this method belongs to Indirect evaluation, not enough intuitively, it is difficult to evaluate the comprehensive condition of wrinkle.
Summary of the invention
The purpose of the present invention is to provide a kind of fabric pincher analysis method and fabric pincher analytical equipments, knit using this
The fabric pincher analytical equipment of object wrinkle analysis method has low not only it can be concluded that the 3-dimensional image model of fabric pincher
The advantage of cost.
In order to solve the above-mentioned technical problem, embodiments of the present invention provide a kind of fabric pincher analytical equipment, including
Roller and folding mechanism, fabric are around on roller, and roller can rotate around own axes and fabric is driven to rotate, folding mechanism pressure
Compel fabric and forms corrugated surface.In addition, fabric pincher analytical equipment further includes camera shooting mechanism and communicates to connect with camera shooting mechanism
Processing mechanism, image mechanism coverage covering roller side at least one edge.Mechanism is imaged according to collected
Corrugated surface sends picture signal to processing mechanism in the image on roller side edge.Processing mechanism is generated according to picture signal to be rolled over
The 3-D graphic on wrinkle surface.
With the development of computer technology and image analysis technology, at field of textiles is using machine vision and digital picture
Reason technology can directly acquire the appearance images information of yarn in kind.And computer image processing technology can be intuitively to image
It is converted, characteristic information is extracted, to obtain test result.This method does not depend on artificial evaluation, and disturbing factor is smaller, place
Manage that speed is fast, and cost is relatively low, there is good repeatability, be accordingly used in analyzing evaluation fabric wrinkle performance have it is very big excellent
Gesture.And in embodiments of the present invention, by the way that fabric to be around on roller, and rotate roller around own axes, video camera
Structure only needs the image for obtaining roller side edge that can rebuild the 3-D graphic of corrugated surface when shooting.Compared to traditional image
For scanning technique, no setting is required that multiple camera synchronous scannings can be obtained 3-D graphic for embodiments of the present invention, therefore subtracts
The quantity for having lacked camera, is greatly saved equipment cost.In addition, in embodiments of the present invention, by the way that fabric is arranged
On roller, allows fabric automatically to complete wrinkleization and detection two steps operation in the same equipment, avoid point
When Wan Cheng not operate, the surface condition of fabric is polluted during shifting fabric.
Preferably, camera shooting mechanism includes camera and guide rod, the side of guide rod extended line in the longitudinal direction and roller
Edge is tangent.Camera is installed on guide rod and camera can move on the length direction of guide rod.It can be in guide rod length side
It can be more easily according to the size of fabric and surface test situation adjustment focal length and shooting to the camera for carrying out position adjustment
Range, more convenient, wide usage is stronger.
Further, preferably, camera shooting mechanism further includes power source of finding a view, power source of finding a view is able to drive camera and exists
It is moved on guide rod, find a view power source and processing mechanism communication connection.Using the movement of processing mechanism electric control camera, operating
When prosthetic intervene, therefore can make test carried out under conditions of completely isolated, effectively prevent extraneous influence.
Preferably, fabric pincher analytical equipment further includes backlight, the setting of backlight face camera, roller, which is located at, to be taken the photograph
As between head and backlight.The contrast that image of the corrugated surface acquired in camera can be improved using backlight, makes figure
As being more clear.
Preferably, folding mechanism further includes the rolling power source with processing mechanism communication connection, power source and rolling are rolled
Cylinder transmission connection, processing mechanism, which is also used to control, rolls power source drive roller rotation.Roller it is automatic rolling it is also possible that
Equipment more automates.
Preferably, folding mechanism includes two pressing plates for being respectively sleeved in the upward both ends of drum shaft, wherein at least one
A pressing plate be movable pressure plate, movable pressure plate can along roller axial movement and oppress fabric jointly with another pressing plate.It utilizes
Movable pressure plate can oppress fabric and form effective wrinkle, and principle is simple, low in cost.
Further, preferably, two pressing plates are all movable pressure plate, and two movable pressure plates can be respectively from roller
Both ends are moved to the middle part of roller, and meet at the middle part of roller.Since fabric has directionality, for fabric, from double
The surface of fabric can be preferably characterized for unidirectional compressing to compressing fabric, therefore resulting detection effect is more joined
Examine value.
In addition, preferably, folding mechanism further includes that compressing power source and transmission component, transmission component are separately connected compressing
Power source and movable pressure plate, compressing power source drive movable pressure plate along the axial movement of roller by transmission component.Utilize compressing
The communication control to movable pressure plate may be implemented in power source, improves the automatization level of system.
Further, preferably, compressing power source can be motor, transmission component includes the silk connecting with motor drive
The axis of thick stick, lead screw and roller is arranged in parallel, and movable pressure plate is installed on lead screw.Motor drives lead screw rotation, and movable pressure plate exists
Along the axial movement of roller under the drive of lead screw.Movable pressure plate can be neatly controlled using the transmission combination of motor and lead screw
Movement, it is low in cost, it can be achieved that property is good.
Obviously, preferably, compressing power source may be gas bar, transmission component includes the connection connecting with motor drive
Bar, movable pressure plate are connect with connecting rod.Gas bar drives connecting rod rotation, and movable pressure plate is under the drive of connecting rod along the axis of roller
To movement.Connecting rod is driven to move using the gas bar of linear motion, without changing the direction of motion, therefore mechanical energy in use process
Loss is lower, and the stability of equipment is more preferable.
Further, preferably, movable pressure plate includes the first panel-like member contacted with fabric, connect with transmission component
The second panel-like member and the pressure sensor between the first panel-like member and the second panel-like member, pressure sensor and processor
Structure communication connection, pressure sensor send to processing mechanism according to pressure of the first panel-like member detected to the second panel-like member and press
Force signal.The pressure fed back to from the first panel-like member can be obtained, using pressure sensor so as to the movable pressure of quantitative control
The pressure of plate.Also, relative to for directly pressure spot is arranged in the outer surface of movable pressure ring, since panel-like member divides pressure
It dissipates and stepless action, the pressure effect test structure obtained detected between each panel-like member is more accurate.
Embodiments of the present invention additionally provide a kind of fabric pincher analysis method, and include the following steps：
Fabric is around on roller；
Roller rotates around own axes and fabric is driven to rotate；
Folding mechanism compressing fabric simultaneously forms corrugated surface；
It images mechanism acquisition corrugated surface and sends picture signal in the image on roller side edge, and to processing mechanism；
Processing mechanism generates the 3-D graphic of corrugated surface according to picture signal；
The characteristic parameter of the fabric is extracted from 3-D graphic, and obtains test result.
Since camera shooting mechanism only needs the image of acquisition roller side edge that can rebuild the three-dimensional of corrugated surface when shooting
Figure, and according to this 3-D graphic, processing mechanism can directly acquire required characteristic parameter, such as fold angle, fold
Highly, fold quantity, fold area etc., therefore have and preferably judge efficiency.For traditional image scanning techniques,
No setting is required that multiple camera synchronous scannings can be obtained 3-D graphic for embodiments of the present invention, therefore reduces the number of camera
Amount, is greatly saved equipment cost.
Preferably, in the step of processing mechanism generates the 3-D graphic of corrugated surface according to picture signal, processor
Structure obtains camera shooting mechanism each frame image collected using any one in following several calculation methods according to picture signal
Corrugated surface height coordinate, and according to height coordinate generate threedimensional model；
The first calculation method, comprising histogram analysis, Image, height extraction step, particularly：
Histogram analysis：If image of the fabric to be measured on roller side edge meets f (x, y), f (x, y) ∈ [0,255], it
Histogram be h (i), i ∈ [0,255], since there are the images of two objects, that is, background in the image on roller side edge
It is projected with fabric to be measured, their intensity profile is close to Gaussian Profile.The intensity profile of the two subject images is obtained respectively, and
By least square method, fitting obtains the mean value and variance of two distributions：(u1,σ1),(u2,σ2)；
Image：According to the intensity profile of background and fabric to be measured, given thresholdFormula
In, λ is empirical coefficient, carries out binary conversion treatment to t, obtains：
Height is extracted：Since pixel value is 0 in image region is fabric to be measured, scanned picture and to obtain pixel be 255
Region and pixel be 0 region boundary contour, the coordinate of every bit on boundary contour is determined, wherein along vertical boundary
The coordinate in direction is height coordinate.
In the above formulas, x is the abscissa of pixel, y is the ordinate of pixel, f (x, y) is the value of pixel, h
(i) be pixel point value be i pixel number, t be threshold value, λ is empirical coefficient, u1For the intensity profile mean value of background, u2It is knitted to be to be measured
The intensity profile mean value of object, σ1For the intensity profile variance of background；σ2For the intensity profile variance of fabric to be measured；
Second of calculation method, comprising edge detection and height extraction step, particularly：
Edge detection：Boundary contour is calculated using edge detection algorithm, wherein edge detection algorithm can be Marr
Edge detection method, Sobel operator, Robert operator or Laplace operator etc.；
Height is extracted：Scanned picture determines the seat of every bit on boundary contour according to the boundary contour that detected
Mark, wherein the coordinate along vertical boundary direction is height coordinate；
The third calculation method, comprising promise transformation and height extraction step, particularly：
Nuo Dun transformation：Since the accumulation of gray scale is linear with the thickness of fabric to be measured, according to image in vertical direction
Projection summation (promise transformation) i.e. in vertical direction, obtain the intensity profile of image in vertical direction；
Height is extracted：Since the accumulation of gray scale is linear with the thickness of fabric to be measured, by gray scale divided by preset ratio
Example coefficient, obtains height coordinate.
Detailed description of the invention
Fig. 1 is the schematic diagram of first embodiment of the invention fabric pincher analytical equipment；
Fig. 2 is the module frame chart of first embodiment of the invention fabric pincher analytical equipment；
Fig. 3 is the schematic diagram of second embodiment of the invention fabric pincher analytical equipment；
Fig. 4 is the partial schematic diagram of part where four embodiment of the invention fabric pincher analytical equipment movable pressure plate；
Description of symbols：
1, roller；2, camera；3, guide rod；4, backlight；5, pressing plate；51, the first panel-like member；52, the second panel-like member；
53, spring；6, lead screw；7 connecting rods；8, gas bar.
Specific embodiment
Embodiment one
First embodiment of the invention provides a kind of fabric pincher analytical equipment, referring to Fig. 1 and Fig. 2 in conjunction with shown in,
Including roller 1 and folding mechanism, fabric is around on roller 1, and roller 1 can rotate around own axes and fabric is driven to rotate, folding
Wrinkle mechanism compressing fabric simultaneously forms corrugated surface.In addition, fabric pincher analytical equipment further include camera shooting mechanism and with camera shooting mechanism
The processing mechanism of communication connection images at least one edge of coverage covering 1 side of roller of mechanism.Image mechanism according to
Collected corrugated surface sends picture signal to processing mechanism in the image on 1 side edge of roller.Processing mechanism is believed according to image
Number generate corrugated surface 3-D graphic.
Wherein, camera shooting mechanism includes camera 2 and guide rod 3, the side of guide rod 3 extended line in the longitudinal direction and roller 1
Edge is tangent.Camera 2 is installed on guide rod 3 and camera 2 can move on the length direction of guide rod 3.It can be long in guide rod 3
Spend direction carry out position adjustment camera 2 can more easily according to the size of fabric and surface test situation adjustment focal length and
Coverage, more convenient, wide usage is stronger.Certainly, camera 2 can also be fixedly installed, this has no effect on hair of the invention
The realization of improving eyesight.In addition, camera shooting mechanism further includes power source of finding a view, power source of finding a view is able to drive camera 2 on guide rod 3
Movement, find a view power source and processing mechanism communication connection.Using the movement of processing mechanism electric control camera 2, in operation without
Manpower intervention, therefore test can be made to carry out under conditions of completely isolated, it effectively prevent extraneous influence.Certainly, using people
Work operates the realization for also having no effect on goal of the invention of the invention.
In the present embodiment, fabric pincher analytical equipment further includes backlight 4, and 4 face camera 2 of backlight is arranged,
Roller 1 is between camera 2 and backlight 4.Corrugated surface figure acquired in camera 2 can be improved using backlight 4
The contrast of picture, is more clear image.Further, backlight 4 can also be communicatively connected to processing mechanism, realize to knitting
The automation control of object wrinkle analytical equipment.It is noted that backlight 4 can select area source, and with rectangular or annular
Light source is preferred.Area source is not easily formed halation in face camera 2 relative to the luminous softer of point light source.
In the present embodiment, folding mechanism further includes the rolling power source with processing mechanism communication connection, motor and rolling
Dynamic power source transmission connection, processing mechanism are also used to control motor and roller 1 are driven to rotate.The automatic rolling of roller 1 can also make
Equipment is obtained more to automate.
In the present embodiment, folding mechanism includes the pressing plate 5 at two both ends being respectively sleeved in 1 axial direction of roller, wherein
Have a pressing plate 5 be movable pressure plate 5, movable pressure plate 5 can along roller 1 axial movement and with another pressing plate 5 jointly oppress
Fabric.Fabric can be oppressed using movable pressure plate 5 and forms effective wrinkle, and principle is simple, low in cost.It is worth mentioning
Be, the shape of pressing plate 5 can be it is a variety of, as long as the inner ring of pressing plate 5 be circle, can cover on roller 1.In this embodiment party
As an example, having selected the pressing plate 5 of annular in formula.In contrast materials demand amount is minimum for annular pressing plate 5, and weight is also most light.
In addition, in the present embodiment, folding mechanism further includes that compressing power source and transmission component, transmission component connect respectively
Compressing power source and movable pressure plate 5 are connect, compressing power source drives movable pressure plate 5 along the axial movement of roller 1 by transmission component.
The communication control to movable pressure plate 5 may be implemented using compressing power source, improve the automatization level of system.
Specifically, in the present embodiment, compressing power source can be motor, transmission component includes connecting with motor drive
The lead screw 6 connect, lead screw 6 and the axis of roller 1 are arranged in parallel, and movable pressure plate 5 is installed on lead screw 6.Motor drives lead screw 6 to revolve
Turn, movable pressure plate 5 is under the drive of lead screw 6 along the axial movement of roller 1.It can spirit using the transmission combination of motor and lead screw 6
The movement of movable pressure plate 5 is controlled livingly, it is low in cost, it can be achieved that property is good.It is shown in Figure 1, symmetrically arranged two lead screws 6
The movement of pressing plate 5 can be made more stable, enhance the reliability of equipment.
During actual, fabric is wound on roller 1 first, the position of camera 2 is adjusted by guide rod 3, with
Camera 2 is enabled clearly and completely to cover at least one edge of 1 side of roller when shooting.Then, movable pressure plate 5 is enabled
Along the axial movement of roller 1 under the action of oppressing power source, fabric is oppressed, is resetted after being kept for a period of time, so that it may obtain
The corrugated surface of fabric.While roller 1 drives fabric rotation, camera 2 can be continuously shot fabric.Processor
The photo process of fitting treatment that these are filmed by structure, obtains the 3-D image of fabric surface.
With the development of computer technology and image analysis technology, at field of textiles is using machine vision and digital picture
Reason technology can directly acquire the appearance images information of yarn in kind.And computer image processing technology can be intuitively to image
It is converted, characteristic information is extracted, to obtain test result.This method does not depend on artificial evaluation, and disturbing factor is smaller, place
Manage that speed is fast, and cost is relatively low, there is good repeatability, be accordingly used in analyzing evaluation fabric wrinkle performance have it is very big excellent
Gesture.And in the present embodiment, by the way that fabric to be around on roller 1, and rotate roller 1 around own axes, camera shooting mechanism exists
Only need the image for obtaining 1 side edge of roller that can rebuild the 3-D graphic of corrugated surface when shooting.It is swept compared to traditional image
For retouching technology, no setting is required that multiple camera synchronous scannings can be obtained 3-D graphic for present embodiment, therefore reduces camera
Quantity, equipment cost is greatly saved.In addition, in embodiments of the present invention, by being arranged fabric in roller 1
On, allow fabric automatically to complete wrinkleization and detection two steps operation in the same equipment, avoids and be respectively completed
When operation, the surface condition of fabric is polluted during shifting fabric.
Embodiment two
Second embodiment of the present invention provides a kind of fabric pincher analytical equipment, and second embodiment is implemented with first
Mode is different, is in place of main difference, and in the first embodiment of the present invention, compressing power source is motor；And
Shown in Figure 3 in second embodiment of the present invention, compressing power source is gas bar 8, at this point, transmission component includes and motor
The connecting rod 7 of transmission connection, movable pressure plate 5 are connect with connecting rod 7.Gas bar 8 drives connecting rod 7 to rotate, and movable pressure plate 5 is connecting
Along the axial movement of roller 1 under the drive of bar 7.Connecting rod 7 is driven to move using the gas bar 8 of linear motion, without changing movement
Direction, therefore mechanical energy loss is lower in use process, the stability of equipment is more preferable.
Further, since lead screw 6 is usually arranged as parallel with the axis rolled when using lead screw 6.At this point, lead screw 6 is possible to
The operation for winding fabric toward on rolling is formed and is hindered.And when using gas bar 8, gas bar 8 and drive rod can be hidden in equipment
Back or shell in the space reserved, to provide the experience of better equipment.
Embodiment three
Third embodiment of the present invention provides a kind of fabric pincher analytical equipment, and third embodiment is the first implementation
The further improvement of mode and second embodiment, mainly thes improvement is that, in the first two embodiment of the invention, only
Having a pressing plate 5 is movable pressure plate 5, and in third embodiment of the present invention, two pressing plates 5 are all movable pressure plate 5.
Particularly, the two movable pressure plates 5 can be moved from the both ends of roller 1 to the middle part of roller 1 respectively, and be met
In the middle part of roller 1.Due to fabric itself braiding have directionality, for fabric, from two-way compressing fabric relative to
The wrinkling resistance of fabric surface can be preferably characterized for unidirectional compressing, therefore resulting detection effect has more reference value.
It, can also be with it is noted that two movable pressure plates 5 can be realized by the opposite lead screw 6 in two direction of rotation
It is realized by being separately connected independent gas bar 8 on two movable pressure plates 5.There are many concrete implementation modes, therefore at this
It is no longer repeated in text.Certainly, furthermore, anticollision mechanism can also be set between two movable pressure plates 5.More into one
The improvement of step and prioritization scheme also repeat no more.
Embodiment four
4th embodiment of the invention provides a kind of fabric pincher analytical equipment, and the 4th embodiment is first,
Two, the further improvement of third embodiment, mainly thes improvement is that, in the 4th embodiment of the invention, referring to
Shown in Fig. 4, movable pressure plate 5 include the first panel-like member 51 contacted with fabric, the second panel-like member 52 being connect with transmission component with
And the pressure sensor between the first panel-like member 51 and the second panel-like member 52, pressure sensor and processing mechanism communication link
It connects, pressure sensor, which sends pressure to processing mechanism according to pressure of the first panel-like member 51 detected to the second panel-like member 52, to be believed
Number.The pressure fed back to from the first panel-like member 51 can be obtained, using pressure sensor so as to quantitative control movable pressure plate 5
Pressure.Also, relative to the dispersion for directly pressure spot is arranged in the outer surface of movable pressure ring, due to panel-like member to pressure
And stepless action, the pressure effect test structure obtained detected between each panel-like member are more accurate.
Further, in the present embodiment, spring 53 can also be set between two panel-like members, by movable pressure plate 5
Contact with fabric turns to Elastic Contact by rigid contact, to adapt to certain test requests in special circumstances.
Embodiment five
5th embodiment of the invention provides a kind of fabric pincher analysis method, includes the following steps：
Fabric is around on roller 1；
Roller 1 rotates around own axes and fabric is driven to rotate；
Folding mechanism compressing fabric simultaneously forms corrugated surface；
It images mechanism acquisition corrugated surface and sends picture signal in the image on 1 side edge of roller, and to processing mechanism；
Processing mechanism generates the 3-D graphic of corrugated surface according to picture signal；
The characteristic parameter of the fabric is extracted from 3-D graphic, and obtains test result.
Since camera shooting mechanism only needs the image of acquisition 1 side edge of roller that can rebuild the three-dimensional of corrugated surface when shooting
Figure, and according to this 3-D graphic, processing mechanism can directly acquire required characteristic parameter, such as fold angle, fold
Highly, fold quantity, fold area, crease recovery angle etc., therefore have and preferably judge efficiency.It is swept compared to traditional image
For retouching technology, embodiments of the present invention no setting is required multiple camera synchronous scannings can be obtained 3-D graphic, therefore reduce
The quantity of camera, is greatly saved equipment cost.
In the present embodiment, in the step of processing mechanism generates the 3-D graphic of corrugated surface according to picture signal,
Processing mechanism show that camera shooting mechanism is collected each using any one in following several calculation methods according to picture signal
The height coordinate of the corrugated surface of frame image, and threedimensional model is generated according to height coordinate；
The first calculation method, comprising histogram analysis, Image, height extraction step, particularly：
Histogram analysis：If image of the fabric to be measured on 1 side edge of roller meets f (x, y), f (x, y) ∈ [0,255], it
Histogram be h (i), i ∈ [0,255], since there are the images of two objects in the image on 1 side edge of roller, that is, carry on the back
Scape and fabric to be measured projection, their intensity profile is close to Gaussian Profile.The intensity profile of the two subject images is obtained respectively,
And by least square method, fitting obtains the mean value and variance of two distributions：(u1,σ1),(u2,σ2)；
Image：According to the intensity profile of background and fabric to be measured, given thresholdFormula
In, λ is empirical coefficient, carries out binary conversion treatment to t, obtains：
Height is extracted：Since pixel value is 0 in image region is fabric to be measured, scanned picture and to obtain pixel be 255
Region and pixel be 0 region boundary contour, the coordinate of every bit on boundary contour is determined, wherein along vertical boundary
The coordinate in direction is height coordinate.
In the above formulas, x is the abscissa of pixel, y is the ordinate of pixel, f (x, y) is the value of pixel, h
(i) be pixel point value be i pixel number, t be threshold value, λ is empirical coefficient, u1For the intensity profile mean value of background, u2It is knitted to be to be measured
The intensity profile mean value of object, σ1For the intensity profile variance of background；σ2For the intensity profile variance of fabric to be measured；
Second of calculation method, comprising edge detection and height extraction step, particularly：
Edge detection：Boundary contour is calculated using edge detection algorithm, wherein edge detection algorithm can be Marr
Edge detection method, Sobel operator, Robert operator or Laplace operator etc.；
Height is extracted：Scanned picture determines the seat of every bit on boundary contour according to the boundary contour that detected
Mark, wherein the coordinate along vertical boundary direction is height coordinate；
The third calculation method, comprising promise transformation and height extraction step, particularly：
Nuo Dun transformation：Since the accumulation of gray scale is linear with the thickness of fabric to be measured, according to image in vertical direction
Projection summation (promise transformation) i.e. in vertical direction, obtain the intensity profile of image in vertical direction；
Height is extracted：Since the accumulation of gray scale is linear with the thickness of fabric to be measured, by gray scale divided by preset ratio
Example coefficient, obtains height coordinate.
Claims (7)
1. a kind of fabric pincher analytical equipment, it is characterised in that：Including roller and folding mechanism, the fabric is around in the roller
On, the roller can rotate around own axes and the fabric is driven to rotate, and the folding mechanism oppresses the fabric and shape
At corrugated surface；
The fabric pincher analytical equipment further includes the processing mechanism for imaging mechanism and communicating to connect with the camera shooting mechanism, described
The coverage of camera shooting mechanism covers at least one edge of the roller side；
Image of the camera shooting mechanism according to the collected corrugated surface on roller side edge, to the processing mechanism
Send picture signal；The processing mechanism generates the 3-D graphic of the corrugated surface according to described image signal；
The folding mechanism includes two pressing plates for being respectively sleeved in the upward both ends of the drum shaft, wherein at least one pressure
Plate is movable pressure plate, the movable pressure plate can along the roller axial movement and knit described in oppressing jointly with another pressing plate
Object.
2. fabric pincher analytical equipment according to claim 1, it is characterised in that：The camera shooting mechanism include camera and
Guide rod, the side of the extended line of the guide rod in the longitudinal direction and the roller is along tangent；
The camera is installed on the guide rod and the camera can move on the length direction of the guide rod；
The fabric pincher analytical equipment further includes backlight, the setting of camera described in the backlight face, the roller position
Between the camera and the backlight.
3. fabric pincher analytical equipment according to claim 1, it is characterised in that：Two pressing plates are all movable pressure plate, and
Two movable pressure plates can be moved from the both ends of the roller to the middle part of the roller respectively, and be met in the roller
Portion.
4. fabric pincher analytical equipment according to claim 1, it is characterised in that：The folding mechanism further includes that compressing is dynamic
Power source and transmission component, the transmission component are separately connected the compressing power source and the movable pressure plate, the compressing power
Source drives the movable pressure plate along the axial movement of the roller by the transmission component.
5. fabric pincher analytical equipment according to claim 4, it is characterised in that：The compressing power source is motor, institute
Stating transmission component includes the lead screw connecting with the motor drive, and the axis of the lead screw and the roller is arranged in parallel, described
Movable pressure plate is installed on the lead screw；
The motor drives the lead screw rotation, the axial fortune of movable pressure plate roller described in the drive lower edge of the lead screw
It is dynamic.
6. fabric pincher analytical equipment according to claim 5, it is characterised in that：The compressing power source is gas bar, institute
Stating transmission component includes the connecting rod connecting with the motor drive, and the movable pressure plate is connect with connecting rod；
The gas bar drives the connecting rod movement, the axis of movable pressure plate roller described in the drive lower edge of the connecting rod
To movement.
7. the fabric pincher analytical equipment according to any one of claim 4 to 6, it is characterised in that：It is described can dynamic pressure
Plate includes the first panel-like member contacted with the fabric, the second panel-like member connecting with the transmission component and is set to described the
Pressure sensor between one panel-like member and the second panel-like member, the pressure sensor and the processing mechanism communicate to connect, institute
It states pressure sensor and pressure is sent to the processing mechanism according to pressure of the first panel-like member detected to second panel-like member
Force signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610135597.XA CN105628603B (en) | 2016-03-10 | 2016-03-10 | Fabric pincher analytical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610135597.XA CN105628603B (en) | 2016-03-10 | 2016-03-10 | Fabric pincher analytical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105628603A CN105628603A (en) | 2016-06-01 |
| CN105628603B true CN105628603B (en) | 2018-11-27 |
Family
ID=56043740
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