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Proceedings Paper

Application of S-transform profilometry in train wheel surface three dimensional measurement
Author(s): Haiqing Wang; Yu Zhang; Jinlong Li; Jiayuan Hu
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Paper Abstract

A three dimensional (3D) measurement method for train wheel surface is proposed based on S-transform profilometry. This method is based on S-transform in fringe analysis. A fringe pattern with a carrier frequency component is projected onto the wheel tread, the deformed fringe patterns caused by the height distribution of wheel surface is recorded as an image, and the fundamental spectrum of S-transform spectra from the image is abstracted by use of weighting filters, then the wrapped phase is obtained by IFFT of the fundamental spectrum. 2D-SRNCP (sorting by reliability following a non-continuous path) phase unwrapping algorithm is used to unwrap phase, which can be used to reconstruct the surface distribution of wheel. Simulation and testing experiment is taken and the result shows that, comparing with light-section method, this method can realize a faster inspection and a higher accuracy measurement of 3D wheel surface.

Paper Details

Date Published: 14 December 2015
PDF: 6 pages
Proc. SPIE 9813, MIPPR 2015: Pattern Recognition and Computer Vision, 981313 (14 December 2015); doi: 10.1117/12.2209469
Show Author Affiliations
Haiqing Wang, Southwest Jiaotong Univ. (China)
Yu Zhang, Southwest Jiaotong Univ. (China)
Jinlong Li, Southwest Jiaotong Univ. (China)
Jiayuan Hu, Southwest Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 9813:
MIPPR 2015: Pattern Recognition and Computer Vision
Tianxu Zhang; Jianguo Liu, Editor(s)

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