纺织学报 ›› 2010, Vol. 31 ›› Issue (6): 58-61.

• 纺织工程 • 上一篇    下一篇

基于垂直芯吸法的织物导湿性能图像处理修正

姜晓云1; 周小红1; 翁鸣1; 蒋耀兴2   

  1. 1.浙江理工大学先进纺织材料与制备技术教育部重点实验室 2.苏州大学江苏省丝绸工程重点实验室
  • 收稿日期:2009-06-04 修回日期:2009-11-27 出版日期:2010-06-15 发布日期:2010-06-15
  • 通讯作者: 周小红

Image-processing amendment of fabric moisture transfer property based on vertical wicking measurement

JIANG Xiaoyun 1; ZHOU Xiaohong 1; WENG Ming 1; JIANG Yaoxing 2

  

  1. 1. Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education , Zhejiang Sci-Tech University 2. Jiangsu Provincial Key Laboratory of Silk Technology, Soochow University
  • Received:2009-06-04 Revised:2009-11-27 Online:2010-06-15 Published:2010-06-15
  • Contact: ZHOU Xiaohong

摘要:

针对普通CCD摄像机拍摄垂直物体时径向畸变对实验精度的影响,提出基于垂直芯吸法图像处理的径向畸变的修正方法。自制了校正模板,实验发现采用1/2.5′型CCD获取图像存在径向桶形畸变。根据垂直芯吸法实验要求,以尺寸为300 mm的畸变图像为目标物,以1 mm为间距进行等分,根据直角三角形斜边上的高与直角边的关系,直角边对应畸变图像尺寸,斜边上的高表示畸变图像尺寸对应的无畸变图像尺寸,以光轴中心上下0.5 mm,共1 mm的像素值为无畸变像素值,建立实际拍摄距离下的畸变图像像素值与实际尺寸的关系。该方法可提高MatLab程序提取织物芯吸高度的精度。

Abstract:

Due to the experimental precision influenced by the radial distortion of general CCD vidicon, a radial distortion amendment method of Matlab image-process based on vertical wicking measurement was proposed. In this paper, Barrel-shaped distortion was collected by self-made calibration templet when using 1/2.5′CCD, and on this basis it constructs the relationship between trim size and the distorted image pels under the practical shooting distance. This amendment method based on the experimental demand of vertical wicking measurement takes a 300 mm sized distorted image as the object which is divided equally into 1mm pitch. According to the relation between the height of the hypotenuse representing the size of the distorted image and the right angle side representing the non-distorted image size in the right triangle, it regulates the pels in the fluctuation 0.5 mm of the center axis and 1 mm in number as the non-distorted images pels. The results show that the amendment can improve the image precision of wicking height extracted by Matlab image-process.

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