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Publication Citation: A Fast Algorithm for Determining the Gaussian Filtered Mean Line in Surface Metrology

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Author(s): Y B. Yuan; X F. Qiang; Jun-Feng Song; Theodore V. Vorburger;
Title: A Fast Algorithm for Determining the Gaussian Filtered Mean Line in Surface Metrology
Published: January 01, 2000
Abstract: A fast algorithm for assessing the Gaussian filtered mean line was deduced using the central limit theorem and an approximation method. This algorithm only uses simple computer operations such as addition, subtraction and digit shifting, and avoids complicated ones such as multiplication and division, and therefore, can achieve a very high speed and accuracy without phase distortion. A new relationship between the Gaussian filtering method and the classical 2RC filtering method was also established using this algorithm.
Citation: Journal of American Society for Precision Engineering
Volume: 24(1)
Issue: No. 1
Pages: pp. 62 - 69
Keywords: digital filter;Gaussian filter;mean line;surface roughness
Research Areas: Metrology, Manufacturing