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Proceedings Paper

Using temporal phase-unwrapping mask for shape measurement
Author(s): Yuchi Lin; Dongmei Cheng; Xiaobing Niu; Meirong Zhao; Zhanyuan Sun; Yuxiang Zhang
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Paper Abstract

A new phase unwrapping algorithm is proposed based on temporal phase unwrappping. Given a series of wrapped phase maps generated from different fringe periods, a jump mask (or matrix) was introduced which reveal the 2π phase jump between successive levels. Using this jump mask, a series of wrapped phase can be unwrapped by summing up integers in specific column of the mask. The summation of the integers is the total multiple of 2π phase jump between wrapped and unwrapped phase. Deduction of the mask, practical experiment and discussion are carried out in detail. This method can measure discontinuity in object and accelerates the phase unwrapping procedure.

Paper Details

Date Published: 20 September 2002
PDF: 4 pages
Proc. SPIE 4919, Advanced Materials and Devices for Sensing and Imaging, (20 September 2002); doi: 10.1117/12.465822
Show Author Affiliations
Yuchi Lin, Tianjin Univ. (China)
Dongmei Cheng, Tianjin Univ. (China)
Xiaobing Niu, Tianjin Univ. (China)
Meirong Zhao, Tianjin Univ. (China)
Zhanyuan Sun, Tianjin Univ. (Taiwan)
Yuxiang Zhang, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 4919:
Advanced Materials and Devices for Sensing and Imaging
Jianquan Yao; Yukihiro Ishii, Editor(s)

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