Comparison of active, passive and adaptive phase error compensation methods using a universal phase error model

Zewei Cai; Xiaoli Liu; Qijian Tang; Xiang Peng; Yongkai Yin

doi:10.1117/12.2267107

10 February 2017 Comparison of active, passive and adaptive phase error compensation methods using a universal phase error model

Zewei Cai, Xiaoli Liu, Qijian Tang, Xiang Peng, Yongkai Yin

Author Affiliations +

Proceedings Volume 10250, International Conference on Optical and Photonics Engineering (icOPEN 2016); 102502Z (2017) https://doi.org/10.1117/12.2267107
Event: Fourth International Conference on Optical and Photonics Engineering, 2016, Chengdu, China

Abstract

Nonlinear intensity response, namely gamma effect, of the projector-camera setup introduces phase error in phase-shifting profilometry. This paper presents a comparison of three phase error compensation methods: active, passive and adaptive, using a universal phase error model. The active method calibrates a gamma factor to modify the projected fringe patterns; the passive method implement an iterative procedure to work out an optimal phase map; the adaptive method compensate phase error based on Hilbert transform without any auxiliary conditions. Comparison Experiments were implemented in three and four phase-shifting steps, which demonstrated that the active method provided an excellent performance regardless the phase-shifting step, yet the passive method might fail when the phase error was large; the adaptive method could be in the same level as the passive method in four phase-shifting step.

Citation Download Citation

Zewei Cai, Xiaoli Liu, Qijian Tang, Xiang Peng, and Yongkai Yin "Comparison of active, passive and adaptive phase error compensation methods using a universal phase error model", Proc. SPIE 10250, International Conference on Optical and Photonics Engineering (icOPEN 2016), 102502Z (10 February 2017); https://doi.org/10.1117/12.2267107

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