Zhang, H.
, Ott, D.
, Song, J.
, Ott, D.
and Chu, W.
(2015),
A simple and fast spline filtering algorithm for surface metrology, Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/jres.120.010, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=918312
(Accessed December 14, 2024)
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A simple and fast spline filtering algorithm for surface metrology
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Abstract
The spline filters and the corresponding robust filters are commonly used filters recommended in ISO standards for surface evaluation. Generally, these linear and non-linear spline filters, composed of symmetric, positive-definite matrices, are always solved in an iterative fashion based on Cholesky decomposition. They have been demonstrated to be relatively efficient, but complicated and inconvenient to implement. A new algorithm for the spline filter is proposed by means of the discrete cosine transform or the discrete Fourier transform. The algorithm is conceptually simple and very convenient to implement.Citation
Journal of Research (NIST JRES) -
NIST Pub Series
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NIST Pubs
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Keywords
Surface metrology, Spline filter, Discrete cosine transform, Discrete Fourier transform
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Created July 13, 2015, Updated November 14, 2018