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Proceedings Paper

Weighted phase unwrapping utilizing intensity modulation analysis for phase-shifting profilometry
Author(s): Zhenyu Jiang; Kemao Qian; Hong Miao; Xiaoping Wu
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Paper Abstract

Path independent algorithm is frequently used for 2D phase unwrapping. The weighted phase unwrapping technique recently published by Ghiglia and Romero, which is based on least-squares method, obtained by the fast cosine transform, is a robust and fast path independent solution. We have improved weighted phase unwrapping by utilizing intensity modulation analysis to determine the weights for phase-shifting profilometry. An experimental result of object shape measurement is given to prove the validity of this technique, and make a contrast between the binary weight and decimal weight constructed by modulation analysis.

Paper Details

Date Published: 29 May 2002
PDF: 4 pages
Proc. SPIE 4537, Third International Conference on Experimental Mechanics, (29 May 2002); doi: 10.1117/12.468757
Show Author Affiliations
Zhenyu Jiang, Univ. of Science and Technology of China (China)
Kemao Qian, Univ. of Science and Technology of China (China)
Hong Miao, Univ. of Science and Technology of China (China)
Xiaoping Wu, Univ. of Science and Technology of China (China)


Published in SPIE Proceedings Vol. 4537:
Third International Conference on Experimental Mechanics

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