Suppression method for strong interference from stray light in 3D imaging system of structured light

被引：3

作者：

Wang, Sheng ^{[1
]}

Zhu, Zhenmin ^{[1
]}

Zhang, Hailiang ^{[1
]}

Zhou, Fuqiang ^{[2
]}

机构：

[1] East China Jiaotong Univ, Sch Elect & Automat Engn, Nanchang, Jiangxi, Peoples R China

[2] Beihang Univ, Sch Instrumentat & Optoelect Engn, Beijing, Peoples R China

来源：

OPTICAL ENGINEERING | 2020年 / 59卷 / 10期

基金：

中国国家自然科学基金;

关键词：

digital fringe projection; stray light; Stokes parameters; FRINGE PROJECTION PROFILOMETRY; SHAPE MEASUREMENT;

D O I：

10.1117/1.OE.59.10.105106

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

It is critical to accurately obtain a phase position in a digital fringe projection system. Due to stray light in a complex environment, when projecting an image of a code fringe, the projected light intensity can be influenced. As a result, the intensity of fringe light captured with the camera may be defective, resulting in the decline of measurement precision. Hence, we propose a strong suppression technology for stray light based on polarization. Through processing fringe images in the frequency domain, this technology can effectively suppress interference of stray light on the three-dimensional (3D) imaging system. This method is verified in the experiment. The results show that the method can accurately capture the 3D profile of real-world targets under the interference of stray light. (C) 2020 Society of Photo-Optical Instrumentation Engineers (SPIE)

引用

页数：11

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