For example, filters are used to separate roughness and waviness from the primary profile, or to create a multiscale decomposition in order to identify the scale at which a phenomenon occurs.
Historically, the first roughness measuring instruments - stylus profilometer - used to have electronic filters made of capacitors and resistors that filtered out low frequencies in order to retain frequencies that represent roughness.
ISO 16610 is composed of two families of documents, one for profiles (open and closed) and one for surfaces.
Areal filters are defined for surfaces measured either by lateral scanning instruments or optical profilometers.
Readers are encouraged to add below proven applications related to surface texture and tribology where a particular filter can be used alone or in conjunction with other treatments or analyses to provide significant results.