10 February 2017 Comparison of active, passive and adaptive phase error compensation methods using a universal phase error model
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.
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Zewei Cai, Xiaoli Liu, Qijian Tang, Xiang Peng, 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); doi: 10.1117/12.2267107; https://doi.org/10.1117/12.2267107
PROCEEDINGS
6 PAGES


SHARE
Back to Top