NF EN ISO 16610-21
Geometrical product specifications (GPS) - Filtration - Part 21 : linear profile filters : gaussian filters
ISO 16610-21:2011 specifies the metrological characteristics of the Gaussian filter, for the filtration of profiles. It specifies, in particular, how to separate long and short wave components of a surface profile.
ISO 16610-21:2011 specifies the metrological characteristics of the Gaussian filter, for the filtration of profiles. It specifies, in particular, how to separate long and short wave components of a surface profile.
This document specifies linear Gaussian filters for the filtration of surface profiles. It defines, in particular, how to separate large- and small-scale lateral components of surface profiles. The concept presented for closed profiles are applicable to the case of roundness filtration. Where appropriate, these concept can be extended to generalized closed profiles, especially for surface profiles with re-entrant features. Implementation details are given in Annex A for open profiles and Annex B for closed profiles.
- Avant-proposiv
- IntroductionVI
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1 Domaine d'application1
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2 Références normatives1
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3 Termes et définitions1
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4 Caractéristiques des filtres de profil gaussiens pour un profil ouvert2
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4.1 Fonction de pondération gaussienne pour un profil ouvert2
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4.2 Caractéristiques de transmission d'un profil ouvert3
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4.3 Effets de bord5
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5 Caractéristiques des filtres de profil gaussiens pour un profil fermé7
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5.1 Introduction7
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5.2 Fonction de pondération gaussienne pour un profil fermé7
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5.3 Caractéristique de transmission d'un filtre de profil fermé9
- Annexe A (informative) Erreurs d'application pour les profils ouverts et fermés (algorithme de convolution)12
- Annexe B (informative) Exemples19
- Annexe C (informative) Relation avec la matrice de filtrage21
- Annexe D (informative) Relation avec la matrice de GPS22
- Bibliographie23
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