Towards a new definition of areal surface texture parameters on freeform surface: Re-entrant features and functional parameters

Research output: Contribution to journalArticle


Characterisation of freeform surfaces is an increasingly importance area of metrology. Currently the characterisation of surfaces is performed using data that can be represented by a height map. Modern measurement devices allow the acquisition of surfaces with complex shapes that cannot properly be analysed using the current texture parameters definition. In this paper a method to characterise both freeform surfaces and surfaces with re-entrant features is proposed. Two surface approximation methods are investigated: triangular mesh and Bézier surface. The proposed method will be compared with a method able to extract the ISO 25178-2 areal texture parameters from a triangular mesh.
Original languageEnglish
Pages (from-to)442 - 459
Number of pages18
Early online date19 Apr 2019
Publication statusPublished - 1 Jul 2019


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