Application of S-transform profilometry in train wheel surface three dimensional measurement

Haiqing Wang; Yu Zhang; Jinlong Li; Jiayuan Hu

doi:10.1117/12.2209469

14 December 2015 Application of S-transform profilometry in train wheel surface three dimensional measurement

Haiqing Wang, Yu Zhang, Jinlong Li, Jiayuan Hu

Proceedings Volume 9813, MIPPR 2015: Pattern Recognition and Computer Vision; 981313 (2015) https://doi.org/10.1117/12.2209469
Event: Ninth International Symposium on Multispectral Image Processing and Pattern Recognition (MIPPR2015), 2015, Enshi, China

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.

Citation Download Citation

Haiqing Wang, Yu Zhang, Jinlong Li, and Jiayuan Hu "Application of S-transform profilometry in train wheel surface three dimensional measurement", Proc. SPIE 9813, MIPPR 2015: Pattern Recognition and Computer Vision, 981313 (14 December 2015); https://doi.org/10.1117/12.2209469

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