Single-shot 3D shape measurement of discontinuous objects based on a coaxial fringe projection system

Wang Zhangying; Zhang Zonghua; Gao Nan; Xia Yanjun; Gao Feng; Jiang Xiangqian

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Single-shot 3D shape measurement of discontinuous objects based on a coaxial fringe projection system

机译：基于同轴边缘投影系统的单次射击3D形状测量

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Fringe projection profilometry has been widely used in high-speed three-dimensional (3D) shape measurement. To improve the speed without loss of accuracy, we present a novel single-shot 3D shape measuring system that utilizes a coaxial fringe projection system and a 2CCD camera. The coaxial fringe projection system, comprising a visible light (red, green, and blue) projector and an infrared (IR) light projector, can simultaneously project red, green, blue, and IR fringe patterns. The 2CCD camera, as the name suggests, has two CCD chips that can acquire visible and IR fringe patterns at the same time. Combining the two-step phase-shifting algorithm, Fourier transform profilometry, and the optimum three-frequency selection method, 3D shape measurement of complex surfaces such as large slopes or discontinuous objects can be obtained from single-shot acquisition. A virtual fringe projection measurement system has been established to generate pre-deformed fringe patterns to correct positional deviations of the coaxial fringe projection system. This method has been applied to simulations and experiments on static and dynamic objects with promising results. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.

机译：边缘投影轮廓测量仪已广泛用于高速三维（3D）形状测量。为了提高速度而不会损失精度，我们提出了一种新型单射3D形状测量系统，其利用同轴边缘投影系统和2CCD相机。同轴边缘投影系统，包括可见光（红色，绿色和蓝色）投影仪和红外线（IR）光投影仪，可以同时投影红色，绿色，蓝色和IR条纹图案。 2CCD摄像头，顾名CMICA，具有两个CCD芯片，可以同时获取可见和IR条纹图案。组合两步相位移位算法，傅里叶变换轮廓测量法和最佳三频选择方法，可以从单次采集获得诸如大斜面或不连续物体的复杂表面的3D形状测量。已经建立了虚拟条纹投影测量系统以产生预变形的条纹图案以校正同轴边缘投影系统的位置偏差。该方法已应用于静态和动态对象的模拟和实验，具有前景的结果。光学社会根据创意公约归因于4.0许可的条款发布。

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来源
《Applied optics》 |2019年第5期|共10页
作者
Wang Zhangying; Zhang Zonghua; Gao Nan; Xia Yanjun; Gao Feng; Jiang Xiangqian;
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Hebei Univ Technol Sch Mech Engn Tianjin 300130 Peoples R China;

Hebei Univ Technol Sch Mech Engn Tianjin 300130 Peoples R China;

Hebei Univ Technol Sch Mech Engn Tianjin 300130 Peoples R China;

Hebei Univ Technol Sch Mech Engn Tianjin 300130 Peoples R China;

Univ Huddersfield Ctr Precis Technol Huddersfield HD1 3DH W Yorkshire England;

Univ Huddersfield Ctr Precis Technol Huddersfield HD1 3DH W Yorkshire England;

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Single-shot 3D shape measurement of discontinuous objects based on a coaxial fringe projection system

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