Hilbert transform-based crosstalk compensation for color fringe projection profilometry

被引：21
|
作者：
Wang, Yuwei [1 ,2 ]
Liu, Lu [1 ,2 ]
Wu, Jun [3 ]
Chen, Xiangcehng [3 ]
Wang, Yajun [4 ]
机构：
[1] Anhui Agr Univ, Coll Engn, Hefei 230036, Peoples R China
[2] Anhui Prov Engn Lab Intelligent Agr Machinery & E, Hefei 230036, Peoples R China
[3] Wuhan Univ Technol, Sch Automat, Wuhan 430070, Peoples R China
[4] Wuhan Univ, State Key Lab Informat Engn Surveying Mapping & R, Wuhan 430079, Peoples R China
来源：
OPTICS LETTERS | 2020年 / 45卷 / 08期
基金：
中国国家自然科学基金;
关键词：
PHASE ERROR SUPPRESSION; SHAPE MEASUREMENT; 3D SHAPE;
D O I：
10.1364/OL.392061
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
This Letter presents an effective crosstalk compensation method for color fringe projection profilometry. The crosstalk-induced phase error has been studied, and we find that the phase error doubles the frequency of the color fringe. Therefore, Hilbert transform is applied on the color fringe to shift the carried phase by pi/2. Two phase maps are recovered from the normalized and the transformed patterns, and their average phase is used for three-dimensional (3D) reconstruction. Simulations and experiments confirm that the proposed method can effectively suppress the crosstalk-induced phase error to improve the measurement accuracy. (C) 2020 Optical Society of America
引用
收藏
页码：2199 / 2202
页数：4
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