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Applying the Techniques of Microstructural Image Processing Toward Measuring Interface Angles in Unsaturated Geomaterials

机译：微结构图像处理技术在非饱和土工材料界面角度测量中的应用

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Previously, researchers have examined phase interactions in multi-phase systems such as geomaterials at different degrees of saturation. Some studies have measured the angle made by the solid-liquid and liquid-air interfaces using physical laboratory tests. The lack of technological advancements that enabled microstructural inter-phase examination has largely impeded results from such efforts. In addition, the measurement of contact angle has largely been dominated by user interference. Recent developments in image acquisition and associated advanced image processing platforms have enabled automated quantification of microstructural features. This study proposes two image-based contact angle-measurement approaches: the "liquid-pixel" and "regression" approaches. The study also investigates "center" identification for contact angle measurement. Statistical evaluation of the measurements is performed for both methods and the observed results are discussed. It is concluded that the "non-zero-intercept" approach, one variation within the regression-based techniques, gave the most reliable angle measurement.
机译：以前，研究人员已经研究了多相系统（例如不同饱和度的土工材料）中的相相互作用。一些研究使用物理实验室测试测量了固液界面和液空气界面所形成的角度。缺乏能够使微结构相间检查成为可能的技术进步，在很大程度上阻碍了这种努力的结果。另外，接触角的测量在很大程度上受到用户干扰的支配。图像采集和相关的高级图像处理平台的最新发展已实现了对微结构特征的自动量化。这项研究提出了两种基于图像的接触角测量方法：“液体像素”和“回归”方法。该研究还研究了接触角测量的“中心”识别。对两种方法均进行了测量值的统计评估，并讨论了观察到的结果。结论是，“非零截距”方法是基于回归的技术中的一种变体，它提供了最可靠的角度测量。

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