Improvement of interfacial tension measurement using a captive bubble in conjunction with axisymmetric drop shape analysis (ADSA)
Improvement of interfacial tension measurement using a captive bubble in conjunction with axisymmetric drop shape analysis (ADSA)
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DOI：
10.1016/j.colsurfa.2004.04.081
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发表时间：
2004-12
期刊：
影响因子：
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通讯作者：
Y. Zuo;M. Ding;A. Bateni;M. Hoorfar;A. Neumann
中科院分区：
文献类型：
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作者：
Y. Zuo;M. Ding;A. Bateni;M. Hoorfar;A. Neumann
轴对称液滴形状分析（ADSA）是一种利用液滴或气泡轮廓测量表面张力的方法。结合ADSA与捕获气泡配置（ADSA-CB）有助于肺表面活性物质相关的研究。ADSA-CB的准确性关键取决于从原始图像中提取的气泡轮廓的质量。在ADSA-CB的上一个版本中，使用全局阈值方法来分割气泡轮廓。然而，该技术对于具有噪声和/或缺乏对比度的图像具有有限的精度。本文提出了一种基于Canny边缘检测器的新一代ADSA-CB。为了获得更好的结果，一种新的边缘平滑技术，称为轴对称液体流体界面平滑（ALFI-S），被引入并结合Canny边缘检测器来提取气泡轮廓。使用不同条件下的捕获气泡图像对新版本的ADSA-CB的性能进行了评估。结果表明，新的方法能够在各种情况下产生准确的表面张力值。
Axisymmetric drop shape analysis (ADSA) is a method to measure surface tension using drop or bubble profiles. Combining ADSA with a captive bubble configuration (ADSA-CB) facilitates pulmonary surfactant related studies. The accuracy of ADSA-CB is crucially dependent on the quality of the bubble profile extracted from the raw image. In the previous version of ADSA-CB, a global thresholding method was used to segment the bubble profile. However, that technique is of limited accuracy for images with noise and/or lack of contrast. In this paper, a new generation of ADSA-CB using the Canny edge detector was developed. To obtain better results, a novel edge smoothing technique, termed axisymmetric liquid fluid interfaces-smoothing (ALFI-S), was introduced and incorporated with the Canny edge detector to extract bubble profiles. The performance of the new version of ADSA-CB was evaluated using captive bubble images under different conditions. The results suggest that the new methodology is capable of producing accurate surface tension values under a variety of circumstances.