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An in-line digital filtering algorithm for surface roughness profiles |
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| Authors: | Seiichiro Hara Tadao Tsukada Kazuyuki Sasajima |
| Affiliation: | * Department of Mechanical Engineering, Nagaoka University of Technology: Nagaoka, Niigata, Japan † Graduate School of Information Science and Engineering, Tokyo Institute of Technology: Ohokayama, Meguro-ku, Tokyo, Japan |
| Abstract: | The authors develop a fast algorithm for low- and high-pass Gaussian digital filters, executed while one discrete datum of a traced profile is sampled. In this report, the 8-step, modified running–box-function filter is presented. The transmission characteristics of this new filter are very close to those of the Gaussian digital filter given in ISO 468-1982. In addition, the conditions for using this filter are given for practical use. |
| Keywords: | surface roughness measurement digital filter Gaussian filter real time in-line system roughness profile running box function |
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