CN102998253A - Dynamic measurement and characterization method of fabric wrinkle recovery angle - Google Patents
Dynamic measurement and characterization method of fabric wrinkle recovery angle Download PDFInfo
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- CN102998253A CN102998253A CN2012105331497A CN201210533149A CN102998253A CN 102998253 A CN102998253 A CN 102998253A CN 2012105331497 A CN2012105331497 A CN 2012105331497A CN 201210533149 A CN201210533149 A CN 201210533149A CN 102998253 A CN102998253 A CN 102998253A
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Abstract
A dynamic measurement and characterization method of fabric wrinkle recovery angle belongs to the field of novel textile testing. Fabric wrinkle resistance is an important index of textile wearability, and wrinkle recovery angle is one of the evaluation indexes. Existing method uses a final angle of fabric wrinkle recovery as a final measurement result, and ignores a recovery process of the fabric, and can not accurately characterize rebound performance of the fabric. The invention provides an image analysis based dynamic measurement and characterization method of fabric wrinkle recovery angle. The method comprises steps of: first conducting standard loading on the fabric with reference to AATCC66-2008 for 5 min; then moving a folded fabric sample to an image acquisition experiment table, and using a digital camera for acquisition of dynamic rebound images of the fabric; then using an image processing algorithm for real-time calculation of fabric wrinkle recovery angle; and finally, drawing a curve of angle fabric wrinkle recovery angle changing along with time, combined with the fabric dynamic wrinkle recovery angle, so as to more comprehensively characterize the fabric crease recovery performance.
Description
Technical field
The present invention relates to a kind of wrinkle recovery angle of woven fabrics using viscoelasticity theory kinetic measurement and characterizing method, comprise load, the clamping of fabric, image acquisition and processing scheme, crease recovery angular measurement and characterizing method, it belongs to the fabric detection field, is specifically related to the technology such as real-time processing, graphic plotting of collection, the image of round textile image.
Background technology
The wrinkle resistance of fabric is also referred to as fabric pincher elasticity, is an important indicator of its wearability, and creasy recovery angle commonly used characterizes wrinkle resistance.The measuring method of creasy recovery angle is to measure the crease recovery angle of fabric folded sample, normative reference is AATCC66-2008, fabric is carried out cutting along warp thread or weft direction, be prepared to the sample of 40mm * 15mm, weight 5min ± 5s of load 500g, sample is removed weight, make its natural resilience, the crease recovery angle of test fabric sample is as the creasy recovery angle of fabric behind the 5min.The general creasy recovery angle of measuring respectively warp thread direction and weft direction is got its average as the wrinkle recovery angle of woven fabrics using viscoelasticity theory final measurement.
This wrinkle recovery angle of woven fabrics using viscoelasticity theory measuring method can only with one or two angles as fabric resilience can evaluation index, concern be the final resilience state of fabric pincher, ignored the situation of change of fabric creasy recovery angle in springback process.Much in the situations, the creasy recovery angle of fabric is identical, but there is notable difference in springback process, simply judges not science and comprehensive of fabric resilience according to the difference of creasy recovery angle.
In recent years, along with the development of image processing techniques, its range of application is more and more extensive.In textile industry, the detection that fabric is relevant has the vision that much depends on the testing staff to carry out, such as the detection of fabric construction parameters, fabric pilling ranking etc., the development of image processing techniques is so that the problems referred to above are expected to solve by automated method.Problem for the creasy recovery angle measuring process exists the present invention proposes a kind of wrinkle recovery angle of woven fabrics using viscoelasticity theory kinetic measurement and characterizing method based on image processing techniques.Gather the image of fabric springback process by digital camera, calculate in real time the spring back angle of fabric in every two field picture, obtain the dynamic creasy recovery angle of fabric, draw creasy recovery angle temporal evolution curve, characterize more comprehensively crease recovery properties of woven fabrics, the wrinkle recovery angle of woven fabrics using viscoelasticity theory kinetic measurement that the present invention proposes and the flow process of characterizing method are as shown in Figure 1.
Summary of the invention
The purpose of this invention is to provide a kind of wrinkle recovery angle of woven fabrics using viscoelasticity theory kinetic measurement and characterizing method, be used for thoroughly evaluating fabric pincher Recovery Process.The technical solution used in the present invention is as follows:
(1) normative reference is AATCC66-2008, fabric is carried out cutting along warp thread or weft direction, be prepared to the sample of 40mm * 15mm, weight 5min ± 5s of load 500g, remove weight from sample rapidly and reposefully, the folded state of sample can not opened.With tweezers folding sample is moved to the image acquisition sample bench, the fabric sample modes of emplacement as shown in Figure 2, sample one wing is fixed, another wing is unsettled, begins immediately the kinetic measurement of wrinkle recovery angle of woven fabrics using viscoelasticity theory, concrete experimental provision is as shown in Figure 2;
(2) by data connecting line and image pick-up card, fabric pincher Recovery Process image is transported among the main frame;
(3) special-purpose wrinkle recovery angle of woven fabrics using viscoelasticity theory is measured process software, can read in the textile image that image pick-up card collects, and shows in real time, provides simultaneously view data, to finish the kinetic measurement of creasy recovery angle;
(4) utilize the dynamic measurement results of wrinkle recovery angle of woven fabrics using viscoelasticity theory, draw wrinkle recovery angle of woven fabrics using viscoelasticity theory temporal evolution curve, describe more comprehensively the fabric pincher springback process, comprehensively characterize crease recovery properties of woven fabrics.
Description of drawings
The kinetic measurement of Fig. 1 wrinkle recovery angle of woven fabrics using viscoelasticity theory and sign flow process
Recovery angle image collecting device among Fig. 2 fabric figure
Former state in Fig. 3 fabric springback process
Fig. 4 image threshold result
Fig. 5 image thinning result
Textile image after Fig. 6 Hough conversion
Fig. 7 fabric pincher spring back angle is transformation curve in time
Embodiment
Before wrinkle recovery angle of woven fabrics using viscoelasticity theory is measured, at first carry out fabric sample and prepare, according to standard A ATCC66-2008 fabric is carried out cutting along warp thread direction and weft direction, specimen size is 40mm * 15mm.
Sample is folded, put in the load device of creasy recovery angle testing machine (instrument that uses in this example is SDL-M003), the load weight is 500g, and duration of load application is 5min ± 5s.
After load is finished, weight on the fabric sample is removed rapidly and stably, the folded state of fabric sample can not opened.With tweezers folding sample is moved to the image collecting device below, sample one wing is fixed, and another wing is unsettled, is convenient to the resilience of fabric nature, begins immediately the kinetic measurement of wrinkle recovery angle of woven fabrics using viscoelasticity theory.
Adopt Visual Basic6.0 to carry out the image processing software establishment, be provided with camera control software in the software, be used for opening camera, control camera exposure degree, time shutter, frequency acquisition, single-frame images size etc.Before measuring wrinkle recovery angle of woven fabrics using viscoelasticity theory, open light source and camera, in software, begin to gather image, when fabric begins resilience, carry out immediately the automatic measurement of wrinkle recovery angle of woven fabrics using viscoelasticity theory, Measuring Time is 5min.
The collection image size that this example arranges is 640 pixels * 480 pixels, and the image acquisition frequency is 60fps.Fig. 3 is a width of cloth fabric former state that collects in the fabric pincher Recovery Process.
Textile image shown in Figure 3 is carried out binary conversion treatment, and the threshold method that adopts in this example is OTSU automatic threshold method, and the threshold value result who obtains as shown in Figure 4.
Image shown in Figure 4 is carried out thinning processing, obtain the backbone at yarn edge, be convenient to carry out the wrinkle recovery angle of woven fabrics using viscoelasticity theory degree and measure, the image thinning result as shown in Figure 5.
Image shown in Figure 5 is carried out the Hough conversion, carry out straight-line detection, to be used for the automatic measurement of fabric return angle.This example is when the Hough conversion, and the stepping angle of setting is 0.1 degree.Two straight lines for detecting after the Hough conversion shown in Figure 6 redraw the result.
According to the included angle of straight line that detects in the Hough conversion process, obtain the crease recovery angle, this routine testing result is 121.5 °.
The image acquisition frequency is 60fps, and acquisition time is 5min, obtains 300 fabric pincher spring back angles, utilizes the iconology method to draw in time transformation curve of fabric pincher spring back angle, as shown in Figure 7.Along warp thread direction, weft direction wrinkle recovery angle of woven fabrics using viscoelasticity theory is carried out dynamic test respectively among Fig. 7, the creasy recovery angle of while test fabric front and direction, as can be seen from the figure, crease recovery process between this has different, is difficult to carry out crease recovery with a simple angle and characterizes.
It can also be seen that from Fig. 7 in 1 minute of beginning, the angle of fabric resilience changes very fast, can be called anxious elastic recovery, interior fabric spring back angle of the time of back changes slower, can be called slow elastic recovery.The final spring back angle of fabric may be consistent, but when may there be larger difference in springback process, can't carries out crease recovery difference with traditional method and characterize, and can carry out more fully crease recovery performance sign with the method that the present invention proposes.
The method that the present invention proposes is also for the more comprehensively sign of crease recovery properties of woven fabrics provides a kind of characterization tool, for the proposition of new standard provides method of testing.
Claims (7)
1. a wrinkle recovery angle of woven fabrics using viscoelasticity theory kinetic measurement and characterizing method, it is characterized in that: utilize standard method that fabric sample is carried out in advance load, utilize image capture device to gather the fabric springback process, calculate the spring back angle of fabric by the time, obtain the dynamic creasy recovery angle of fabric, draw creasy recovery angle temporal evolution curve, characterize the fabric resilience energy comprehensively.
2. according to claim 1 fabric standard termination is characterized in that: normative reference AATCC66-2008, fabric load weight 500 grams, 5min ± 5s.
3. according to claim 1 fabric sample is characterized in that: carry out fabric sample by 40mm * 15mm size and prepare.
4. according to claim 1 textile image collection, it is characterized in that: be furnished with special-purpose reflection source in the image capturing system, image capture device is generally digital camera, require camera resolution in 640 pixels * more than 480 pixels, frequency acquisition is more than 60fps, fabric sharpness of border in the image that collects can be used in the calculating of creasy recovery angle.
5. according to claim 1 dynamic creasy recovery angle, it is characterized in that: by data communication interface digital camera is linked to each other with main frame, the fabric dynamic image is input to main frame, the communication speed of requirement data communication interface, data line, capture card satisfies the high speed of image and carries requirement, can adopt the high speed communication interfaces such as CamLink, IEEE1394, USB3.0.
6. dynamic creasy recovery angle according to claim 1 is characterized in that: in image processing software, utilize image processing algorithm to calculate the wrinkle spring back angle of fabric in each two field picture, obtain the dynamic creasy recovery angle of fabric.
7. according to claim 1 wrinkle recovery angle of woven fabrics using viscoelasticity theory characterizing method is characterized in that: obtain each constantly wrinkle recovery angle of woven fabrics using viscoelasticity theory degree, utilize the graphics method, draw over time curve of creasy recovery angle, for estimating all sidedly crease recovery properties of woven fabrics.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336008A (en) * | 2013-05-15 | 2013-10-02 | 江南大学 | Device and method for dynamically detecting recoverability of fabric wrinkles |
| CN103438836A (en) * | 2013-08-23 | 2013-12-11 | 中联重科股份有限公司 | Device, system and method for measuring bending angle of bent piece |
| CN103728307A (en) * | 2014-01-17 | 2014-04-16 | 浙江理工大学 | Fabric wrinkle resistance test device and method for simulating actual dressing |
| CN106198937A (en) * | 2016-07-19 | 2016-12-07 | 江南大学 | A kind of dynamic evaluation method of crease recovery properties of woven fabrics |
| CN106898021A (en) * | 2017-04-17 | 2017-06-27 | 江南大学 | One kind is based on anisotropic crease recovery properties of woven fabrics uniformization characterizing method |
| CN106896055A (en) * | 2017-04-17 | 2017-06-27 | 江南大学 | A kind of pressure method of wrinkle recovery angle of woven fabrics using viscoelasticity theory measurement |
| CN107014808A (en) * | 2017-04-17 | 2017-08-04 | 江南大学 | A kind of crease recovery process representation system of cotton fabric |
| CN107064143A (en) * | 2017-04-17 | 2017-08-18 | 江南大学 | A kind of crease recovery process representation system of wool fabrics |
| CN109342311A (en) * | 2018-10-08 | 2019-02-15 | 浙江染化宝检测服务有限公司 | A kind of high-precision wrinkle recovery angle of woven fabrics using viscoelasticity theory detector |
| CN109708964A (en) * | 2018-11-30 | 2019-05-03 | 苏州欧尼迪纺织科技有限公司 | The method for folding pressuring method test fabric morphological plasticity |
| CN109708965A (en) * | 2018-11-30 | 2019-05-03 | 苏州欧尼迪纺织科技有限公司 | The method for winding pressuring method test fabric morphological plasticity |
| CN109781544A (en) * | 2019-01-11 | 2019-05-21 | 安徽省冠盛纺织科技有限公司 | A kind of device and method of test fabric morphological plasticity |
| CN109959567A (en) * | 2019-03-04 | 2019-07-02 | 武汉纺织大学 | A kind of method of quick test fabric crease resistant finishing |
| CN110044904A (en) * | 2019-04-09 | 2019-07-23 | 江南大学 | A kind of crease recovery of fabrics evaluation method based on power function equation |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336008A (en) * | 2013-05-15 | 2013-10-02 | 江南大学 | Device and method for dynamically detecting recoverability of fabric wrinkles |
| CN103438836A (en) * | 2013-08-23 | 2013-12-11 | 中联重科股份有限公司 | Device, system and method for measuring bending angle of bent piece |
| CN103728307A (en) * | 2014-01-17 | 2014-04-16 | 浙江理工大学 | Fabric wrinkle resistance test device and method for simulating actual dressing |
| CN103728307B (en) * | 2014-01-17 | 2015-09-16 | 浙江理工大学 | Simulate fabric wrinkle resistance test device and the method for actual dressing |
| CN106198937A (en) * | 2016-07-19 | 2016-12-07 | 江南大学 | A kind of dynamic evaluation method of crease recovery properties of woven fabrics |
| CN107064143A (en) * | 2017-04-17 | 2017-08-18 | 江南大学 | A kind of crease recovery process representation system of wool fabrics |
| CN106896055A (en) * | 2017-04-17 | 2017-06-27 | 江南大学 | A kind of pressure method of wrinkle recovery angle of woven fabrics using viscoelasticity theory measurement |
| CN107014808A (en) * | 2017-04-17 | 2017-08-04 | 江南大学 | A kind of crease recovery process representation system of cotton fabric |
| CN106898021A (en) * | 2017-04-17 | 2017-06-27 | 江南大学 | One kind is based on anisotropic crease recovery properties of woven fabrics uniformization characterizing method |
| CN109342311A (en) * | 2018-10-08 | 2019-02-15 | 浙江染化宝检测服务有限公司 | A kind of high-precision wrinkle recovery angle of woven fabrics using viscoelasticity theory detector |
| CN109708964A (en) * | 2018-11-30 | 2019-05-03 | 苏州欧尼迪纺织科技有限公司 | The method for folding pressuring method test fabric morphological plasticity |
| CN109708965A (en) * | 2018-11-30 | 2019-05-03 | 苏州欧尼迪纺织科技有限公司 | The method for winding pressuring method test fabric morphological plasticity |
| CN109781544A (en) * | 2019-01-11 | 2019-05-21 | 安徽省冠盛纺织科技有限公司 | A kind of device and method of test fabric morphological plasticity |
| CN109959567A (en) * | 2019-03-04 | 2019-07-02 | 武汉纺织大学 | A kind of method of quick test fabric crease resistant finishing |
| CN109959567B (en) * | 2019-03-04 | 2021-10-08 | 武汉纺织大学 | Method for rapidly testing wrinkle recovery performance of fabric |
| CN110044904A (en) * | 2019-04-09 | 2019-07-23 | 江南大学 | A kind of crease recovery of fabrics evaluation method based on power function equation |
| CN110044904B (en) * | 2019-04-09 | 2021-05-14 | 江南大学 | Fabric wrinkle recovery evaluation method based on power function equation |
| US11333653B2 (en) | 2019-04-09 | 2022-05-17 | Jiangnan University | Method for evaluating crease recovery of fabrics based on power function equation |
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Application publication date: 20130327 |