Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (03): 89-94.doi: 10.13475/j.fzxb.20200707906

• Textile Engineering • Previous Articles     Next Articles

Detection of fabric shape retention based on image processing

TANG Qianhui, WANG Lei(), GAO Weidong   

  1. Key Laboratory of Eco-Textiles (Jiangnan University), Ministry of Education, Wuxi, Jiangsu 214122, China
  • Received:2020-07-30 Revised:2020-12-07 Online:2021-03-15 Published:2021-03-17
  • Contact: WANG Lei E-mail:wangl_jn@163.com

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Abstract:

In order to evaluate the shape retention of a fabric comprehensively and accurately, a dynamic detection system was developed to simulate the recovery process of fabric flattening after being creased in daily uses. The video sequence of fabric crease recovery is obtained by the detection system, and the single frame video image at each time is extracted by the program, and then the image is preprocessed, binarized and refined in turn. The indexes reflecting the fabric shape retention, including angle, height and shape preserving area, are extracted. The experimental results show that in the crease recovery stage, the change rate of each index gradually decreases with time. Under the condition of pressure 10 N and pressure time 10 s, the sample tends to become stable after 60 s in recovery stage. A linear relationship exists between the angle at 60 s and the wrinkle recovery angle measured by the existing standard method, and relationships between the height, shape retention area and the drape coefficient are linear too. The results show that the system can predict the wrinkle recovery angle and drape coefficient of fabric through the three indexes of angle, height and shape retention area, and it can accurately describe the dynamic change process of fabric shape, and can be used to evaluate the fabric shapes accurately and comprehensively.

Key words: fabric shape retention, wrinkle recovery, drape, image processing, dynamic measurement, video sequence

CLC Number: 

  • TS101.9

Fig.1

Fabric shape retention testing device"

Fig.2

One frame of video image (a) ,binary image (b) and thinning image (c)"

Tab.1

Sample specifications"

编号 原料 组织 纱线线
密度/tex		 经纬密/
(根·(10 cm)-1)		 整理方式
经纱 纬纱 经向 纬向
1# 棉 平纹 14.6 14.6 120 70 丝光潮交联
2# 涤纶 二上二下
左斜纹		 7.4 19.7 780 420 无
3# 亚麻 凸条 14.8 19.7 660 322 无
4# 棉 平纹 9.7 9.7 787 394 无
5# 棉 平纹 9.7 9.7 669 354 无

Fig.3

Warp sample image"

Fig.4

Dynamic change of shape retention index. (a) Warp apex angle; (b) Weft apex angle; (c) Warp height; (d) Weft height;(e) Warp shape retention area; (f) Weft shape retention area"

Tab.2

Result of fabric shape retention test at 60 s during crease recovery stage"

编号 顶角/(°) 顶高/cm 保形面积/cm2
经向 纬向 经向 纬向 经向 纬向
1# 154.8 149.8 0.35 0.60 1.44 2.22
2# 157.8 155.0 0.68 0.79 2.50 3.47
3# 122.4 113.9 0.49 0.63 1.44 1.50
4# 125.4 120.8 0.54 0.75 1.57 2.24
5# 132.8 129.2 0.49 0.68 1.55 2.32

Tab.3

Average value of fabric wrinkle recovery angle according to AATCC 66—2014 manual method"

编号 折皱回复角/(°)
经向 纬向
1# 147.4 142.8
2# 143.1 144.7
3# 111.6 98.6
4# 92.8 71.9
5# 95.0 83.4

Tab.4

Average value of fabric drape coefficient according to GB/T 23329—2009 manual method"

编号 悬垂系数/%
静态 动态
1# 48.62 58.30
2# 72.26 76.87
3# 50.17 53.54
4# 59.55 62.23
5# 53.54 58.98
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