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Eigenparticles: characterizing particles using eigenfaces

机译:特征颗粒:使用特征叶片表征粒子

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The shape characteristics of particles have a pinnacle role in microsopic and macroscopic features of a system. Several studies have highlighted the need for considering deviations from a spherical representation of particles for accurate modeling of granular and multiphase flow systems. Using a shape factor, sphericity or roundness parameter alone is proven to be inadequate to capture the physical phenomena. In the present study we propose a novel metric based on the pattern recognition method Eigenfaces, coining the technique Eigenparticles'. Using this technique we create a single statistical distribution of basis shapes to describe the morphological composition. The proposed technique is successfully validated with test shapes and applied to real particles. When compared with a state-of-the-art Fourier based method, Eigenparticles' performs favorably, clearly distinguishing the different particles.
机译:颗粒的形状特性在系统的微观和宏观特征中具有顶峰角色。几项研究突出了考虑与粒子的球形表示的偏差,以便精确建模粒状和多相流动系统。单独使用形状因子,球形或圆度参数被证明是不充分的,以捕获物理现象。在本研究中,我们提出了一种基于模式识别方法的新颖度量,根据图案识别方法,根据技术特征来提出。使用这种技术,我们创建了基础形状的单一统计分布,以描述形态学组成。所提出的技术用测试形状成功验证并应用于真实粒子。与基于最先进的傅立叶的方法相比,特征列术术语有利地表现出明确区分不同的颗粒。

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