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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 248A Separation Method of 3D Engineering Surface with...

A Separation Method of 3D Engineering Surface with Correlation Analysis of NSCT Sub-Bands

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Abstract:

The 3D engineering surfaces are comprised of a range of spatial frequency components, such as form, waviness and roughness. Filtering techniques are commonly adopted to separate the different components. To overcoming the shortcomings of traditional filtering method, a new separation method is proposed with the correlation analysis of sub-bands in nonsubsampled contourlet transform (NSCT) domain. The 3D engineering surface topography is decomposed into different sub-bands by NSCT, and the correlation coefficients of NSCT sub-bands with its parent and children sub-bands are calculated by Pearson correlation method. Then the roughness, waviness and form of 3D real surface topography are restructured respectively by the inverse NSCT based on the NSCT sub-bands which belong to different components. Finally, a group of 3D engineering surfaces are separated into different components, and the result shown that the proposed method can separate 3D engineering surface effectively.

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Mechanical Materials and Manufacturing Engineering II

Info:

Periodical:

Applied Mechanics and Materials (Volume 248)

Pages:

443-449

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.248.443

Citation:

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Online since:

December 2012

Authors:

Ming Wei Chui, You Qian Feng, Wei Wang, Xiao Dong Xu, Zheng Chao Li

Keywords:

Correlation Analysis, Nonsubsampled Contourlet Transform (NSCT), Separation of 3D Surface

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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