CN105628712B - Fabric hooks silk analytical equipment and fabric hooks silk analysis method - Google Patents
Fabric hooks silk analytical equipment and fabric hooks silk analysis method Download PDFInfo
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- CN105628712B CN105628712B CN201610135596.5A CN201610135596A CN105628712B CN 105628712 B CN105628712 B CN 105628712B CN 201610135596 A CN201610135596 A CN 201610135596A CN 105628712 B CN105628712 B CN 105628712B
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
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- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
- G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
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Abstract
The present invention relates to fabric test technical field, disclose that a kind of fabric hooks silk analytical equipment and fabric hooks silk analysis method.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；Gou Si mechanisms to the fabric hook silk and formed hooking silk table face；Camera shooting mechanism acquire it is described hook silk table face roller side edge image, and to processing mechanism send picture signal；Processing mechanism generates the 3-D graphic in the hook silk table face according to described image signal；The characteristic parameter of the fabric is extracted from 3-D graphic, and obtains test result.Using the fabric hook silk analytical equipment of fabric hook silk analysis method can not only show that fabric hooks the 3-dimensional image model of silk, and with the advantage of low cost.
Description
Technical field
The present invention relates to fabric test technical field, more particularly to a kind of fabric hooks silk analytical equipment and fabric hooks silk analysis
Method.
Background technology
In daily life, the fabric for constituting dress material in use often can be by outer force effect.It is long to some chemical fibres
Silk fabrics or more open, the sparse knitted dress product of institutional framework, in the object for encountering thorn-like, fiber in fabric or
Monofilament is easy to be pulled out by hook, forms silk ring in fabric surface or is broken by hooking.It not only forms the residual defect of fabric surface, influences to take
Appearance is filled, and influences the durability of fabric.Therefore, garment production field in recent years, because high-grade knitted clothes because
It hooks and complains always caused by silk in rising trend, seem ever more important to the test and appraisal of the silk of the resistance to hook performance of fabric.
It measures at present there are three types of the anti-instruments for hooking silk performance of fabric：Nail hammer formula hooks silk instrument, puncture roll type hooks silk instrument and square chest hooks
Silk instrument.Their action principle is roughly the same, be all make dress materials during exercise with certain sharp object such as needle points, saw
Tooth, nail and thorn etc. interact and generate hook silk under certain condition.It is a difference in that the sample that puncture roll type hooks silk instrument is not
With licker-in effect under by the free state of tension, and when other two kinds of instrument tests, sample both ends are that sewing is good, when experiment
It is cased with the cylindrical clearer rotation of sample, is generated with nail interaction thereon and hooks silk (such as nail hammer formula hooks silk instrument), can will also tried
Sample is placed in the square chest with nail, and square chest is made to rotate, and sample collides with nail in random movement and generates and hook silk (such as
Square chest type hooks silk instrument).It may be selected to be tested with the practical instrument of silk situation relatively that hooks in practicality.
And resistance to hook silk Classified Protection be during hooking silk rotating cylinder turn over certain revolution after remove sample, standing
The length and density that silk is hooked in certain breadth are measured after a period of time, then shining into row according to description or contrast standard sample hooks silk journey
Degree grading, reflects the silk of resistance to hook of fabric, and it is generally only that rotating cylinder revolution has been when hooking silk that various countries' fabric, which hooks silk performance test standard,
Difference.
The traditional silk of resistance to hook evaluating method needs manual identified fabric then to be provided by the variation of the rear surface of hook silk
Subjective evaluation, or evaluate its resistance to hook silk grade with reference to certain existing standards.Traditional method is time-consuming longer, less efficient,
And may have prodigious floating because of personal subjectivity and operation reason evaluation result, in addition sample is shifted after completing to hook silk
The many uncontrollable factors still deposited in the process also interfere evaluation result.Finally it is difficult to again intuitively after completing evaluation and test
The relevant information of fabric surface is read herein.
Invention content
Invention is designed to provide that a kind of fabric hooks silk analysis method and fabric hooks silk analytical equipment, uses the fabric
Hook silk analysis method fabric hook silk analytical equipment can not only obtain fabric hook silk 3-dimensional image model, and with it is low at
This advantage.
In order to solve the above-mentioned technical problem, embodiments of the present invention provide a kind of fabric hook silk analytical equipment, including
Fabric movement mechanism, Gou Si mechanisms, camera shooting mechanism and the processing mechanism communicated to connect with camera shooting mechanism, wherein：Fabric movement machine
Structure includes roller, and fabric is around on roller, and roller can rotate around own axes and fabric is driven to rotate, and Gou Si mechanisms can be right
Fabric hooks silk, and obtains and hook silk table face, images at least one edge of the coverage covering roller side of mechanism.Image mechanism
Image according to collected hook silk table face on roller side edge sends picture signal to processing mechanism；Processing mechanism is according to figure
As signal generates the 3-D graphic in hook silk table face.
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
Reason speed is fast, and cost is relatively low, and there is good repeatability and reproducibility, the hook silk performance for being accordingly used in analyzing evaluation fabric to have very
Big advantage.And in embodiments of the present invention, by the way that fabric to be around on roller, and roller is made to be rotated around own axes,
Camera shooting mechanism only needs the image for obtaining roller side edge that can rebuild the 3-D graphic for hooking silk table face when shooting.Compared to tradition
Image scanning techniques for, embodiments of the present invention can be obtained 3-D graphic it is not necessary that multiple camera synchronous scannings are arranged,
Therefore the quantity for reducing camera, is greatly saved equipment cost.In addition, in embodiments of the present invention, by that will knit
Object is arranged on roller so that fabric can automatically be completed to hook silk and detection two steps operation in the same equipment, keep away
When having exempted to be respectively completed operation, the surface condition of fabric is polluted during shifting fabric.
Preferably, Gou Si mechanisms include the hook wire for being equipped with several hook silk needles and the hook silk for being used to support hook wire
Moving parts.Wherein, silk needle is hooked to be connected on the surface for hooking wire by spring.Hook silk needle is connected on to the table for hooking wire by spring
Face so that fabric surface can be left in time after hooking silk by hooking silk needle, point contact be formed, to ensure correct test result.
Further, preferably, hook silk moving parts may include be set to roller above supporting beam and one end with
The drawstring of supporting beam connection, the other end for hooking wire and drawstring connect.Wherein, it is spherical shape to hook wire, when hook wire is dangled naturally,
Silk needle is hooked to contact with fabric.Naturally the hook wire dangled is when that can simulate realistically fabric in routine use by the feelings of hook silk
Shape.
In addition, preferably, hooking silk moving parts can also include mobile power source, be sequentially connected with mobile power source
Pushing block and for guide hook wire the direction of motion guide rail.The head that wire is installed on pushing block is hooked, pushing block is set to guide rail
On, mobile power source can drive hook wire to be moved towards the direction closer or far from roller along guide rail by pushing block.It utilizes
Pushing block can also be completed to hook the process that wire is contacted with fabric, detached.And in the measurement process of the tester of block-pushing, silk is hooked
Part is controllable to the pressure of fabric surface, can more obtain accurate measurement result.
Further, preferably, the head of pushing block is connected with the tail portion of pushing block by elastic component, wire and fabric are hooked
When contact, guide rail is protruded on the head of pushing block.During hooking silk, the pushing block head of guide rail is protruded in roller and the phase for hooking wire
Springing can occur under interreaction force, and then prevent hook silk needle from forming line with fabric surface and contact.
Further, preferably, it can be several to hook wire, each wire that hooks is removably installed in pushing block successively
Head, and these hook wire arragement direction it is consistent with the axis direction of roller.It can pushed away according to actual test demand
The hook wire of width needed for the header arrangement of block combines, and realizes the susceptible shape setting of an equipment.
Based on dismountable scheme, further, preferably, the head of pushing block can be along the direction of the axis of roller
Equipped with sliding slot, the fin coordinated with sliding slot can be equipped with by hooking in wire.Alternatively, the head of pushing block can along the direction of the axis of roller
To be equipped with fin, the sliding slot coordinated with fin can also be equipped with by hooking in wire.
In addition, preferably, camera shooting mechanism includes camera and guide rod, the extended line and roller of guide rod in the longitudinal direction
Side along tangent.Camera is installed on guide rod and camera can move on the length direction of guide rod.It can be long in guide rod
Spend direction carry out position adjustment camera can more easily according to the size of fabric and surface test situation adjustment focal length and
Coverage, more convenient, wide usage is stronger.
Preferably, it further includes backlight that fabric, which hooks silk analytical equipment, the setting of backlight face camera, roller, which is located at, to be taken the photograph
As between head and backlight.The contrast for hooking image of the silk table face acquired in camera can be improved using backlight, make figure
As being more clear.
Embodiments of the present invention additionally provide a kind of fabric hook silk analysis method, and include the following steps：
Fabric is around on roller；
Roller rotates around own axes and fabric is driven to rotate；
Gou Si mechanisms hook silk and formed to the fabric hooks silk table face；
It images mechanism and acquires the image for hooking silk table face on roller side edge, and picture signal is sent to processing mechanism；
Processing mechanism generates the 3-D graphic for hooking silk table face according to picture signal；
The characteristic parameter of the fabric is extracted from 3-D graphic, and obtains test result.
The three-dimensional in silk table face is hooked since camera shooting mechanism only needs the image for obtaining roller side edge that can rebuild when shooting
Figure, and according to this 3-D graphic, processing mechanism can directly acquire required characteristic parameter, such as hook silk angle, hook silk
Length hooks silk quantity etc., therefore with preferably judge efficiency.It is of the invention for traditional image scanning techniques
Embodiment can be obtained 3-D graphic it is not necessary that multiple camera synchronous scannings are arranged, therefore reduce the quantity of camera, significantly
Equipment cost is saved.
Preferably, in the step of processing mechanism generates the 3-D graphic for hooking silk table face according to picture signal, processor
Structure obtains each frame image for imaging mechanism and being acquired according to picture signal using any one in following several computational methods
Hook silk table face height coordinate, and according to height coordinate generate threedimensional model；
The first computational methods, including 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 computational methods, including 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 operators, Robert operators 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 computational methods, including promise transformation and height extraction step, particularly：
Nuo Dun is converted：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 converts) 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.
Description of the drawings
Fig. 1 is the schematic diagram that first embodiment of the invention fabric hooks silk analytical equipment；
Fig. 2 is the module frame chart that first embodiment of the invention fabric hooks silk analytical equipment；
Fig. 3 is the schematic diagram of second embodiment of the invention fabric Gou Si mechanisms and roller；
Fig. 4 is the schematic diagram of third embodiment of the invention fabric Gou Si mechanisms and roller；
Fig. 5 is the schematic diagram of four embodiment of the invention fabric Gou Si mechanisms.
Reference sign：
1, roller；2, camera；3, guide rod；4, backlight；
5, Gou Si mechanisms：51, wire is hooked；52, drawstring；53, supporting beam；54, pushing block；55, guide rail；56, elastic component.
Specific implementation mode
Embodiment one
The first embodiment of the present invention provides a kind of fabric hook silk analytical equipment, referring to Fig. 1 and Fig. 2 in conjunction with shown in,
Including fabric movement mechanism, Gou Si mechanisms, camera shooting mechanism and the processing mechanism communicated to connect with camera shooting mechanism, wherein：Fabric is transported
Motivation structure includes roller, and fabric is around on roller, and roller can rotate around own axes and fabric is driven to rotate, Gou Si mechanisms energy
It is enough that silk is hooked to fabric, and obtain and hook silk table face, image at least one edge of the coverage covering roller side of mechanism.Camera shooting
Image of the mechanism according to collected hook silk table face on roller side edge, picture signal is sent to processing mechanism；Processing mechanism root
The 3-D graphic for hooking silk table face is generated according to picture signal.
In the present embodiment, Gou Si mechanisms include being equipped with the hook wire of several hook silk needles and being used to support hook wire
Hook silk moving parts.Wherein, silk needle is hooked to be connected on the surface for hooking wire by spring.Silk needle will be hooked, hook silk is connected on by spring
The surface of part so that fabric surface can be left in time after hooking silk by hooking silk needle, form point contact, to ensure correctly test knot
Fruit.
Further, in the present embodiment, it includes being set to supporting beam and one end above roller to hook silk moving parts
The drawstring being connect with supporting beam, the other end for hooking wire and drawstring connect.Wherein, it is spherical shape to hook wire, hooks wire and dangles naturally
When, it hooks silk needle and is contacted with fabric.Naturally the hook wire dangled is when that can simulate realistically fabric in routine use by hook silk
Situation.It is of course also possible to use traditional nail hammer formula hooks the mode of silk instrument, saves connection and hook silk needle and hook the bullet on wire surface
Spring only maintains the point contact of hook silk needle and fabric surface by drawstring.
In addition, in the present embodiment, camera shooting mechanism includes camera and guide rod, the extended line of guide rod in the longitudinal direction
Side with roller is along tangent.Camera is installed on guide rod and camera can move on the length direction of guide rod.It can be
The camera that guide rod length direction carries out position adjustment can be adjusted more easily according to the size of fabric and surface test situation
Focal length and coverage, more convenient, wide usage is stronger.Certainly, camera can also be fixedly installed, this has no effect on the present invention
Goal of the invention realization.In addition, camera shooting mechanism further includes power source of finding a view, power source of finding a view can drive camera in guide rod
Upper movement, power source of finding a view are communicated to connect with processing mechanism.Using the movement of processing mechanism electric control camera, in operation without
Manpower intervention, therefore test can be made to be carried out under conditions of completely isolated, it effectively prevent ectocine.Certainly, using people
Work operation also has no effect on the realization of the goal of the invention of the present invention.
In the present embodiment, it further includes backlight, the setting of backlight face camera, roller that fabric, which hooks silk analytical equipment,
Between camera and backlight.The comparison for hooking image of the silk table face acquired in camera can be improved using backlight
Degree, makes image be more clear.Further, backlight can also be communicatively connected to processing mechanism, realize and silk point is hooked to fabric
The automation control of desorption device.It is noted that backlight can select area source, and it is preferred with rectangular or annular light source.
Area source is not easily formed halation relative to the luminous softer of point light source in face camera.
In the present embodiment, Gou Si mechanisms further include the rolling power source communicated to connect with processing mechanism, motor and rolling
Dynamic power source is sequentially connected, and processing mechanism is additionally operable to control motor and drives roller rotation.Roller it is automatic rolling it is also possible that
Equipment more automates.
In actual test process, fabric is wound on roller first, the position of camera is adjusted by guide rod, with
At least one edge of roller side clearly and is completely covered when camera is shot.Then, it is put from supporting beam
Lower hook wire.Wire is hooked to be dangled naturally under the action of drawstring to the surface of fabric.Roller is enabled to rotate, then hooking wire will be to roller
On fabric hook silk.Obtain the hook silk table face of fabric.While roller drives fabric rotation, camera can carry out fabric
It is continuously shot.The photo process of fitting treatment that these are filmed by processing mechanism, obtains the 3-D view 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
Reason speed is fast, and cost is relatively low, and there is good repeatability and reproducibility, the hook silk performance for being accordingly used in analyzing evaluation fabric to have very
Big advantage.And in embodiments of the present invention, by the way that fabric to be around on roller, and roller is made to be rotated around own axes,
Camera shooting mechanism only needs the image for obtaining roller side edge that can rebuild the 3-D graphic for hooking silk table face when shooting.Compared to tradition
Image scanning techniques for, embodiments of the present invention can be obtained 3-D graphic it is not necessary that multiple camera synchronous scannings are arranged,
Therefore the quantity for reducing camera, is greatly saved equipment cost.In addition, in embodiments of the present invention, by that will knit
Object is arranged on roller so that fabric can automatically be completed to hook silk and detection two steps operation in the same equipment, keep away
When having exempted to be respectively completed operation, the surface condition of fabric is polluted during shifting fabric.
Embodiment two
Second embodiment of the present invention provides a kind of fabric hook silk 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, it is spherical shape to hook wire, utilizes hook silk
Part freely dangles to carry out hook silk, belongs to the improvement done on the basis of traditional nail hammer formula；And the second of the present invention
It is shown in Figure 3 in embodiment, it is to hook contact of the wire with fabric using rail guidance to hook silk.
Specifically, in the present embodiment, hooking silk moving parts and including mobile power source, connect with mobile power source transmission
The pushing block connect and the guide rail for guiding the direction of motion for hooking wire.The head that wire is installed on pushing block is hooked, pushing block is set to and leads
On rail, mobile power source can drive hook wire to be moved towards the direction closer or far from roller along guide rail by pushing block.Profit
It can also be completed to hook the process that wire is contacted with fabric, detached with pushing block.And in the measurement process of the tester of block-pushing, hook
Wire is controllable to the pressure of fabric surface, can more obtain accurate measurement result.
Certainly, in the present embodiment, mobile power source can not also be set, and utilize Manual-pushing pushing block, at this point, hooking
Silk moving parts include pushing block and the guide rail for guiding the direction of motion for hooking wire.The head that wire is installed on pushing block is hooked, is pushed away
Block is set on guide rail, is also provided on pushing block convenient for pushing the handle of pushing block.Operator can be by pushing pushing block, band manually
The dynamic wire that hooks is moved along guide rail towards the direction closer or far from roller.Using Manual-pushing can reduced cost, it is more applicable
It is used under laboratory or small-scale production environment.
Embodiment three
Third embodiment of the present invention provides a kind of fabric hook silk analytical equipment, and third embodiment is the second implementation
Being further improved for mode, mainly thes improvement is that, shown in Figure 4 in third embodiment of the present invention, the head of pushing block
Portion is connected with the tail portion of pushing block by elastic component.When hooking wire and fabric contacts, guide rail is protruded on the head of pushing block.
During hooking silk, protruding the pushing block head of guide rail can occur in roller under the interaction force of hook wire
Springing, and then prevent hook silk needle from forming line with fabric surface and contact.
In the present embodiment, can also pressure sensor be set in the contact site of pushing block and elastic component, to quantitative
Ground obtains the reaction force that pushing block is subject to when deforming upon.By the pressure sensor and processing mechanism communication connection, may be used also
Hook silk power when hooking silk by the output of the mobile power source of control to realize using processing mechanism controls.
Embodiment four
The 4th embodiment of the present invention provides a kind of fabric and hooks silk analytical equipment, and the 4th embodiment is second or the
Being further improved for three embodiments, mainly thes improvement is that, in the 4th embodiment of the invention, hook wire has several
It is a, each head for hooking wire and being removably installed in pushing block successively, and the axis side of these arragement directions and roller that hook wire
To consistent.
Can be according to actual test demand, the hook wire of the width needed for the header arrangement of pushing block combines, and realizes one and sets
Standby susceptible shape setting.Scheme based on present embodiment, shown in Figure 5, the head of pushing block is along the direction of the axis of roller
Equipped with sliding slot, hooks wire and be equipped with the fin coordinated with sliding slot.
Operating personnel can slide into required amount of hook wire from the direction along arrow in Fig. 5 in sliding slot, and can be with
Selection hooks the position of wire as needed.Obviously, the position that hook wire corresponds to contact roller is fabric hook silk when hooking filament test
Position multiplicating experiment can be carried out, and can be or not the different location of same part fabric by the setting of sliding slot
Different experiment parameters is used in same experiment, therefore improves the wide usage of equipment.
It is obvious also possible to the head of pushing block along the axis of roller direction be arranged fin, hook wire on setting with it is convex
The sliding slot of rib cooperation.Specific set-up mode can be selected according to the experience of those skilled in the art.More specifically,
It can also be arranged for locking the tightening piece for hooking wire perpendicular to the direction of fin or sliding slot on pushing block, prevent hook wire from surveying
It is slid during examination.
Embodiment five
The 5th embodiment of the present invention provides a kind of fabric hook silk analysis method, includes the following steps：
Fabric is around on roller；
Roller rotates around own axes and fabric is driven to rotate；
Gou Si mechanisms hook silk and formed to the fabric hooks silk table face；
It images mechanism and acquires the image for hooking silk table face on roller side edge, and picture signal is sent to processing mechanism；
Processing mechanism generates the 3-D graphic for hooking silk table face according to picture signal；
The characteristic parameter of the fabric is extracted from 3-D graphic, and obtains test result.
The three-dimensional in silk table face is hooked since camera shooting mechanism only needs the image for obtaining roller side edge that can rebuild 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 with preferably judge efficiency.For traditional image scanning techniques,
Embodiments of the present invention can be obtained 3-D graphic it is not necessary that multiple camera synchronous scannings are arranged, therefore reduce the number of camera
Amount, is greatly saved equipment cost.
In the present embodiment, in the step of processing mechanism generates the 3-D graphic for hooking silk table face according to picture signal,
Processing mechanism according to picture signal using any one in following several computational methods obtain camera shooting mechanism acquired it is each
The height coordinate in the hook silk table face of frame image, and threedimensional model is generated according to height coordinate；
The first computational methods, including 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 threshold formula
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 computational methods, including 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 operators, Robert operators 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 computational methods, including promise transformation and height extraction step, particularly：
Nuo Dun is converted：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 converts) 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 (10)
1. a kind of fabric hooks silk analytical equipment, it is characterised in that：Including fabric movement mechanism, Gou Si mechanisms, camera shooting mechanism and with
The processing mechanism of camera shooting mechanism communication connection, wherein：
The fabric movement mechanism includes roller, and fabric is around on the roller, and the roller can rotate simultaneously around own axes
The fabric is driven to rotate, the Gou Si mechanisms can hook silk to the fabric, and obtain the silk table face that hooks, the camera shooting mechanism
Coverage covers at least one edge of the roller side；
Image of the camera shooting mechanism according to the collected hook silk table face on roller side edge, to the processing mechanism
Send picture signal；The processing mechanism generates the 3-D graphic in the hook silk table face according to described image signal；
The Gou Si mechanisms include the rolling power source communicated to connect with the processing mechanism, and motor is passed with the rolling power source
Dynamic connection.
2. fabric according to claim 1 hooks silk analytical equipment, it is characterised in that：The Gou Si mechanisms include equipped with N number of
It hooks the hook wire of silk needle and is used to support the hook silk moving parts for hooking wire, the N is natural number；
Wherein, the silk needle that hooks is connected on by spring on the surface for hooking wire.
3. fabric according to claim 2 hooks silk analytical equipment, it is characterised in that：It includes set on described to hook silk moving parts
The drawstring that supporting beam and one end above roller are connect with the supporting beam, it is described to hook other end company of the wire with the drawstring
It connects；
The hook wire is spherical shape, and when the hook wire is dangled naturally, the hook silk needle is contacted with the fabric.
4. fabric according to claim 3 hooks silk analytical equipment, it is characterised in that：The hook silk moving parts include movement
Power source, the pushing block being sequentially connected with the mobile power source and the guide rail for guiding the direction of motion for hooking wire；
The head for hooking wire and being installed on the pushing block, the pushing block are set on the guide rail, and the mobile power source can
The hook wire is driven to be moved towards the direction closer or far from the roller along the guide rail by the pushing block.
5. fabric according to claim 4 hooks silk analytical equipment, it is characterised in that：The head of the pushing block and the tail of pushing block
Portion is connected by elastic component, and when the hook wire is contacted with the fabric, the guide rail is protruded on the head of the pushing block.
6. fabric according to claim 4 or 5 hooks silk analytical equipment, it is characterised in that：The hook wire is H, the H
For natural number, wherein each head for hooking wire and being removably installed in the pushing block successively, and these hook the arragement direction of wire
It is consistent with the axis direction of the roller.
7. fabric according to claim 6 hooks silk analytical equipment, it is characterised in that：The head of the pushing block is along the roller
The direction of axis be equipped with sliding slot, the wire that hooks is equipped with the fin that coordinates with the sliding slot；
Alternatively, the head of the pushing block along the direction of the axis of the roller be equipped with fin, the hooks wire equipped with it is described
The sliding slot of fin cooperation.
8. fabric according to claim 1 hooks silk analytical equipment, 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；
It further includes backlight that the fabric, which hooks silk analytical equipment, and camera described in the backlight face is arranged, the roller position
Between the camera and the backlight.
9. a kind of fabric hooks silk analysis method, which is characterized in that include the following steps：
Fabric is around on roller；
The roller rotates around own axes and the fabric is driven to rotate；
Gou Si mechanisms hook silk and formed to the fabric hooks silk table face；
Camera shooting mechanism acquire it is described hook silk table face roller side edge image, and to processing mechanism send picture signal；
The processing mechanism generates the 3-D graphic in the hook silk table face according to described image signal；
The characteristic parameter of the fabric is extracted from the 3-D graphic, and obtains test result.
10. fabric according to claim 9 hooks silk analysis method, which is characterized in that in the processing mechanism according to
Picture signal generated in the step of 3-D graphic in the hook silk table face, the processing mechanism according to described image signal utilize with
Any one in lower three kinds of computational methods obtains the height in the hook silk table face for each frame image that the camera shooting mechanism is acquired
Coordinate, and the 3-D graphic is generated according to the height coordinate；
The first computational methods, including histogram analysis, Image, height extraction step, wherein：
Histogram analysis：
If image of the fabric to be measured on roller side edge meets f (x, y), f (x, y) ∈ [0,255], its histogram is h
(i), [0,255] i ∈ obtains the intensity profile of described image respectively, and by least square method, and fitting obtains two distributions
Mean value and variance：(u1,σ1),(u2,σ2)；
Image：Given threshold t meets：Binary conversion treatment is carried out to t, is obtained：
Height is extracted：Since the region that pixel value is 0 in the image is fabric to be measured, scans the image and obtain pixel and be
The boundary contour in the region that 255 region and pixel are 0, determines the coordinate of every bit on the boundary contour, wherein edge
The coordinate in vertical boundary direction is height coordinate；
It is described it is various in, x is the abscissa of pixel, y is the ordinate of pixel, f (x, y) is the value of pixel, h (i) is
Pixel number that pixel point value is i, t are threshold value, and λ is empirical coefficient, u1For the intensity profile mean value of background, u2For fabric to be measured
Intensity profile mean value, σ1For the intensity profile variance of background；σ2For the intensity profile variance of fabric to be measured；
Second of computational methods, including edge detection and height extraction step, wherein：
Edge detection：Using Marr edge detection methods, Sobel operators, Robert operators or Laplace operator detect figure
The boundary contour of picture；
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 computational methods, including promise transformation and height extraction step, wherein：
Nuo Dun is converted：Projection according to the image in vertical direction is summed, and the gray scale of the image in vertical direction is obtained
Distribution；
Height is extracted：By the gray scale divided by preset proportionality coefficient, height coordinate is obtained.
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| CN107144481A (en) * | 2017-07-05 | 2017-09-08 | 浙江工业职业技术学院 | A kind of anti-hook system safety testing device of fabric |
| CN107478571A (en) * | 2017-09-27 | 2017-12-15 | 鹤山市鸿新经编厂有限公司 | A kind of fabric of pressure adjustable hooks silk analytical equipment |
| JP2020007683A (en) * | 2018-07-12 | 2020-01-16 | 株式会社豊田自動織機 | Woven-fabric inspection apparatus for loom |
| CN112509496A (en) * | 2020-12-15 | 2021-03-16 | 北京空间机电研究所 | Manufacturing process method for helicopter suspension flying red flag |
| CN113340803B (en) * | 2021-08-05 | 2021-09-28 | 南通市通州翔鹏纺织品有限公司 | Finished product hooking and slipping detection device for production and processing of home textile products |
| CN116337746B (en) * | 2023-03-29 | 2024-04-16 | 江苏省纺织产品质量监督检验研究院 | Roller device for testing anti-hooking performance of textile and testing method thereof |
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| US5774177A (en) * | 1996-09-11 | 1998-06-30 | Milliken Research Corporation | Textile fabric inspection system |
| WO2000006823A1 (en) * | 1998-07-24 | 2000-02-10 | Zellweger Luwa Ag | Method and device for evaluating defects in flat textile structures |
| CN1312461C (en) * | 2004-06-23 | 2007-04-25 | 香港理工大学 | Reconstruction system and method for sheet three-dimensional surface of flexible body |
| CN101587082B (en) * | 2009-06-24 | 2011-08-03 | 天津工业大学 | Quick three-dimensional reconstructing method applied for detecting fabric defect |
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