Real-time Measurement of Interfacial Tension by Image Processing.
Real-time Measurement of Interfacial Tension by Image Processing.
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通过图像处理实时测量界面张力。
DOI：
10.3169/itej.56.1643
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
Y. Hayami
中科院分区：
文献类型：
--
作者：
Hiroyasu Sakamoto;A. Murao;Y. Hayami
介绍了一种通过对流体液滴状界面图像的分析，构建高精度在线实时测量流体界面张力的方法。该测量是基于将Young-Laplace常微分方程解曲线与观测到的下落曲线进行MMSE拟合。由于我们在系统中引入了一种新的亚像素精度的液滴形状检测方法和非线性最优化的Lvenberg-MarQuardt-Morison方法，因此该系统表现出了比以前报道的更高的精度和效率。此外，我们还提出了一种评定曲线拟合误差的新方法。我们的方法提供了一种通过观察界面张力来分析各种流体界面上随时间变化的现象的有效而精确的手段。
This paper describes a method for constructing a precision online real-time measuring system of the interfacial tension of fluids by analyzing images of the fluids' drop shape interface. The measurement is based on MMSE fitting of a solution curve of Young-Laplace ordinary differential equations onto an observed drop curve. The system showed higher accuracy and efficiency than previously reported ones because we have introduced in our system a new method of detecting drop shape with sub-pixel accuracy and a Levenberg-Marquardt-Morrison method of nonlinear optimization. In addition, we have proposed a new method of evaluating curve fitting error. Our method presents an effectual and precise means of analyzing time dependent phenomena in various fluids' interfaces through observing interfacial tension.