A measurement method for contact angle based on Hough Transformation

作者：Xu, Bingliang; Liu, Dianwen^*; Xu, Guoyin; Zhang, XiaoLin; Bi, Lingcheng

来源：Measurement, 2013, 46(3): 1109-1114.

DOI：10.1016/j.measurement.2012.10.023

• Contact angle measurement
• Hough Transformation
• Drop shape
• Contact point
• Robustness

A measurement method for contact angle based on Hough Transformation is put forward in this paper. It is proved reliable through a study on the drop shape of water on Teflon, polypropylene and stainless steel. The measurement method for contact angle is implemented in the following procedures, drop shape image graying, and threshold segmentation with OTSU method, edge detection by Roberts operator, and the line and circle detection by Hough Transformation. The water contact angles on the Teflon, polypropylene and stainless steel are obtained by calculation; they are 113.23 degrees, 104.34 degrees and 77.28 degrees respectively. The noise experiment shows that the method works with high robustness.

• 出版日期2013-4
• 单位昆明理工大学