This part of ISO 16610 is a geometrical product specification (GPS) standard and is to be regarded as a general GPS standard (see ISO/TR 14638). It influences chain links 3 and 5 of the GPS matrix model. The ISO/GPS Matrix model given in ISO 14638 gives an overview of the ISO/GPS system of which this part of ISO 16610 is a part. The fundamental rules of ISO/GPS given in ISO 8015 apply to this part of ISO 16610 and the default decision rules given in ISO 14253-1 apply to specifications made in accordance with this part of ISO 16610, unless otherwise indicated. This part of ISO 16610 develops the basic concepts of linear areal filters, which include Gaussian filters, Spline filters, and Wavelet filters. This document (EN ISO 16610-60:2015) has been prepared by Technical Committee ISO/TC 213 "Dimensional and geometrical product specifications and verification" (secretariat: DS, Denmark) in collaboration with Technical Committee CEN/TC 290 "Dimensional and geometrical product specification and verification" the secretariat of which is held by AFNOR (France). On the national level, the responsible committee is NA 152-03-03 AA "Oberflächen" ("Surfaces") at the Standards Committee Technical Fundamentals (NATG) at DIN.