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Three dimensional shape measurement of wear particle by iterative volume intersection

机译：迭代体积交点法测量磨损颗粒的三维形状

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The morphology of wear particle is a fundamental indicator where wear oriented machine health can be assessed. Previous research proved that thorough measurement of the particle shape allows more reliable explanation of the occurred wear mechanism. However, most of current particle measurement techniques are focused on extraction of the two-dimensional (2-D) morphology, while other critical particle features including volume and thickness are not available. As a result, a three-dimensional (3-D) shape measurement method is developed to enable a more comprehensive particle feature description. The developed method is implemented in three steps: (1) particle profiles in multiple views are captured via a camera mounted above a micro fluid channel; (2) a preliminary reconstruction is accomplished by the shape-from-silhouette approach with the collected particle contours; (3) an iterative re-projection process follows to obtain the final 3-D measurement by minimizing the difference between the original and the re-projected contours. Results from real data are presented, demonstrating the feasibility of the proposed method.
机译：磨损颗粒的形态是可评估磨损相关机器健康状况的基本指标。先前的研究证明，对颗粒形状的彻底测量可以更可靠地解释发生的磨损机理。但是，当前的大多数粒子测量技术都集中在二维（2-D）形态的提取上，而其他关键的粒子特征（包括体积和厚度）尚不可用。结果，开发了三维（3-D）形状测量方法以实现更全面的粒子特征描述。所开发的方法分三个步骤实施：（1）通过安装在微流体通道上方的摄像机捕获多个视图中的粒子轮廓; （2）通过从轮廓到轮廓的方法对收集的粒子轮廓进行初步重建; （3）接下来的迭代重投影过程通过最小化原始轮廓和重投影轮廓之间的差异来获得最终的3D测量。提出了真实数据的结果，证明了该方法的可行性。

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