Enhanced Dual-frequency Pattern Scheme Based on Spatial-temporal Fringes Method
Abstract
One of the major challenges of employing a dual-frequency phase-shifting algorithm for phase retrieval is its sensitivity to noise. Yun et. al [H Yun, B Li, S Zhang. 2017] proposed a dual-frequency method based on the Fourier transform profilometry (FTP), yet the low frequency lobes are close to each other for accurate band-pass filtering. In light of this problem, a novel dual-frequency pattern based on the spatial-temporal fringes (STF) method is developed in this paper. Three fringe patterns with two different frequency are required. The low frequency phase is obtained from two low frequency fringe patterns by the STF method, so the signal lobes can be extracted accurately as they are far away from each other. The high frequency phase is retrieved from another fringe pattern without the impact of the DC component. Simulations and experiments are conducted to demonstrate the excellent precision of the proposed method.
Keywords
Cite
@article{arxiv.1705.06816,
title = {Enhanced Dual-frequency Pattern Scheme Based on Spatial-temporal Fringes Method},
author = {Minmin Wang and Canlin Zhou and Shuchun Si and Zhenkun Lei and Xiaolei Li and Hui Li and YanJie Li},
journal= {arXiv preprint arXiv:1705.06816},
year = {2018}
}
Comments
24 pages,39 figures