Surface measurements in industrial activities are required principally to check tolerances or to characterise the surface functionality of components. There are many engineering application in which surface metrology carry out an important role (e.g. electronics, information technology, energy, optics, etc.), but focusing only on autonomous manufacturing processes, in a perspective of what is called Industry 4.0, the areas of interest are the in-line quality check and the analysis of additive manufacturing processes with the aim of understanding and governing them. To achieve these, it is required that the measurement is acquired and processed quickly, hence, recently the optical instruments have been adopted more and more.