Software filters of surface roughness

Abstract

The aim of this article is to present the system of roughness measurement, the problem of data filtering and processing the results. At the beginning of this article three basic elements of the surface are defined: roughness, waviness and surface shape. When measuring roughness all of these three parts are scanned together and under evaluation they need to be separated. Filtration is possible using roughness measurement systems and software filters. Next part of the article is focused on a description of problems of hardware filtering of these three surface components. Software data filtering description follows the description of hardware filtering. The description of the software filter contains the basic mathematical definition of the filters and their known area of usage and their limitations.