introduction to filtration in surface metrology

This presentation explains how surface metrology filters work and their effect on signals (profiles and surfaces). These notions are key to understand surface texture analysis.
The following notions are presented: frequency, wavelength, phase, Fourier spectrum, low-pass filter, hight-pass filter, band-pass filter, cut-off, nesting idex, ISO 16610, ISO 21920-2, ISO 25178-2.
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More resources can be found on our Surface Metrology Guide, surfacemetrolog...
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