Application of the morphological alpha shape method to the extraction of topographical features from engineering surfaces
Application of the morphological alpha shape method to the extraction of topographical features from engineering surfaces
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DOI：
10.1016/j.measurement.2012.09.015
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发表时间：
2013-02-01
期刊：
影响因子：
5.6
通讯作者：
Scott, Paul J.
中科院分区：
文献类型：
--
作者：
Lou, Shan;Jiang, Xiangqian;Scott, Paul J.
与基于均值线的滤波器相比，形态滤波器是面向函数的，更适合于元件性能的函数预测。本文提出了一种新的基于阿尔法形状的形态学方法，用于提取工程表面的地形特征。与传统的形态滤波器实现方法相比，阿尔法形状方法对于大结构元素的性能更有效。所得到的包络遵循整个表面的形式，从而避免了端部效应引起的失真。采用形态学α形状方法对汽车气缸套和生物工程人工股骨头的一系列测量表面进行了分析。成功地提取了表面形貌特征，从而能够对零件进行进一步的物理和摩擦学分析。(C)2012爱思唯尔有限公司保留所有权利。
In contrast to the mean-line based filters, morphological filters are function oriented and more suitable for the functional prediction of component performance. This paper presents a novel morphological method based on the alpha shape for the extraction of topographical features from engineering surfaces. Compared to the traditional implementation of morphological filters, the alpha shape method is more efficient in performance for large structuring elements. The resulting envelope follows the form of the surface all over such that the distortions caused the end effects are avoided. A series of measured surfaces from the automotive cylinder liner and the bioengineering artificial femoral heads are analyzed using the morphological alpha shape method. The topographical features are successfully extracted, enabling further physical and tribological analysis to the components. (C) 2012 Elsevier Ltd. All rights reserved.