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Application of the morphological alpha shape method to the extraction of topographical features from engineering surfaces

Lou, Shan, Jiang, Xiangqian and Scott, Paul J. (2013) Application of the morphological alpha shape method to the extraction of topographical features from engineering surfaces. Measurement, 46 (2). pp. 1002-1008. ISSN 0263-2241

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    Abstract

    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 element. 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 femoral heads are analyzed using the morphological alpha shape method. The topographical features are successfully extracted, enabling further analysis to the components.

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    Item Type: Article
    Uncontrolled Keywords: morphological filters; alpha shape; surface topography; topographical features
    Subjects: T Technology > TJ Mechanical engineering and machinery
    Schools: School of Computing and Engineering
    School of Computing and Engineering > Centre for Precision Technologies > EPSRC Centre for Innovative Manufacturing in Advanced Metrology
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    Depositing User: Shan Lou
    Date Deposited: 04 Dec 2012 15:34
    Last Modified: 29 Jan 2013 10:07
    URI: http://eprints.hud.ac.uk/id/eprint/16150

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