期刊
OPTICS AND LASERS IN ENGINEERING
卷 85, 期 -, 页码 84-103出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.optlaseng.2016.04.022
关键词
Phase measurement; Fringe projection profilometry; Temporal phase unwrapping
类别
资金
- National Natural Science Fund of China [11574152, 61505081]
- Six Talent Peaks project (Jiangsu Province, China) [2015-DZXX-009]
- '333 Engineering' research project (Jiangsu Province, China) [BRA2015294]
- Fundamental Research Funds for the Central Universities [30915011318]
- Open Research Fund of Jiangsu Key Laboratory of Spectral Imaging AMP
- Intelligent Sense [3092014012200417]
- 'Zijin Star' program of Nanjing University of Science and Technology
In fringe projection profilometry (FPP), temporal phase unwrapping is an essential procedure to recover an unambiguous absolute phase even in the presence of large discontinuities or spatially isolated surfaces. So far, there are typically three groups of temporal phase unwrapping algorithms proposed in the literature: multi-frequency (hierarchical) approach, multi-wavelength (heterodyne) approach, and number-theoretical approach. In this paper, the three methods are investigated and compared in detail by analytical, numerical, and experimental means. The basic principles and recent developments of the three kind of algorithms are firstly reviewed. Then, the reliability of different phase unwrapping algorithms is compared based on a rigorous stochastic noise model. Furthermore, this noise model is used to predict the optimum fringe period for each unwrapping approach, which is a key factor governing the phase measurement accuracy in FPP. Simulations and experimental results verified the correctness and validity of the proposed noise model as well as the prediction scheme. The results show that the multi frequency temporal phase unwrapping provides the best unwrapping reliability, while the multi-wavelength approach is the most susceptible to noise-induced unwrapping errors. (C) 2016 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据