31 December 2008 Decreasing the amplitude deviation of Guassian filter in surface roughness measurements
Author Affiliations +
Proceedings Volume 7130, Fourth International Symposium on Precision Mechanical Measurements; 713054 (2008) https://doi.org/10.1117/12.819744
Event: Fourth International Symposium on Precision Mechanical Measurements, 2008, Anhui, China
Abstract
A new approach for decreasing the amplitude characteristic deviation of Guassian filter in surface roughness measurements is presented in this paper. According to Central Limit Theorem, many different Guassian approximation filters could be constructed. By using first-order Butterworth filter and moving average filter to approximate Guassian filter, their directions of amplitude deviation are opposite, and their locations of extreme value are close. So the linear combination of them could reduce the amplitude deviation greatly. The maximum amplitude deviation is only about 0.11% through paralleling them. The algorithm of this new method is simple and its efficiency is high.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bo Liu, Bo Liu, Yu Wang, Yu Wang, } "Decreasing the amplitude deviation of Guassian filter in surface roughness measurements", Proc. SPIE 7130, Fourth International Symposium on Precision Mechanical Measurements, 713054 (31 December 2008); doi: 10.1117/12.819744; https://doi.org/10.1117/12.819744
PROCEEDINGS
6 PAGES


SHARE
Back to Top