Phase unwrapping for fringe projection three-dimensional measurement with projector defocusing

被引：14
|
作者：
Zheng, Dongliang [1 ,2 ]
Da, Feipeng [1 ,2 ]
Huang, Heming [3 ]
机构：
[1] Southeast Univ, Sch Automat, Sipailou 2, Nanjing 210096, Jiangsu, Peoples R China
[2] Southeast Univ, Key Lab Measurement & Control Complex Syst Engn, Minist Educ, Sipailou 2, Nanjing 210096, Jiangsu, Peoples R China
[3] Qinghai Normal Univ, Sch Comp Sci, 36 Wusixi St, Xining 810008, Qinghai, Peoples R China
来源：
OPTICAL ENGINEERING | 2016年 / 55卷 / 03期
基金：
中国国家自然科学基金;
关键词：
three-dimensional shape measurement; phase unwrapping; projector defocusing; PULSE-WIDTH MODULATION; 3-D SHAPE MEASUREMENT; GRAY-CODE LIGHT; MEASURING PROFILOMETRY; GAMMA-CORRECTION;
D O I：
10.1117/1.OE.55.3.034107
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
For high-speed three-dimensional shape measurement, techniques with projector defocusing have become increasingly important. When the projector is defocused, structured patterns used for phase unwrapping are blurred. These blurred patterns need to be normalized into binary distributions in actual measurement. We propose a method to normalize these blurred structured patterns. The retrieved absolute phase is correct even when the measured objects contain discontinuous parts or contrasting colors. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
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页数：7
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