All you need to know about the ISO 25178: Surface Texture Characterization
ISO 25178 is considered one of the main milestones in the characterization of 3D areal surface texture. It is based on the principle that nature is inherently three-dimensional. Thus, it is the first international standard taking into account 3D surfaces.
In particular, the standard defines 3D surface texture parameters and the applicable operators along with the measurement technologies and calibration methods.
Difference between contact and non-contact surface assessment
Choosing the most appropriate filters for a successful result
An easy tool to choose the convenient surface roughness parameter for your application