Three-Dimensional Shape Measuring Method Based on Dual-Frequency Digital Moiré Fringe

被引：0

作者：

Hu Hailing ^{[1
,2
,3
]}

He Renji ^{[1
,2
]}

Chen Yang ^{[1
,2
,3
]}

Zhang Peiqing ^{[4
,2
,3
]}

Shen Xiang ^{[4
,2
,5
,3
]}

Da Shixun ^{[4
,2
,3
]}

Song Baoan ^{[1
,2
,3
]}

机构：

[1] Faculty of Electrical Engineering and Computer Science, Ningbo University

[2] Key Laboratory of Photoelectric Detecting Materials and Devices of Zhejiang Province

[3] Engineering Research Center for Advanced Infrared Photoelectric Materials and Devices of Zhejiang Province

[4] The Research Institute of Advanced Technologies, Ningbo University

[5] Ningbo Institute of Oceanography, Ningbo University

来源：

激光与光电子学进展 | 2023年 / 08期

关键词：

D O I：

暂无

中图分类号：

TP391.41 [];

学科分类号：

080203 ;

摘要：

A dual-frequency digital Moiré measurement method(DFDM) is proposed for the three-dimensional(3D) shape measurement of an object. The high-and low-frequency fringes are modulated separately along orthogonal direction using different carrier frequencies before being projected onto the measured object. After collecting and demodulating the composite fringe, the digital π phase shift is used to remove the DC component of the demodulated fringes, resulting in high-precision Moiré fringes for calculating the wrapped phase. The unwrapping of the high-frequency wrapped phase is guided by the low-frequency phase to further realistically reconstruct the surface of the measured object. When compared with existing single-shot digital Moiré profilometry, DFDM effectively removes the DC component of the fringe and calculates the phase more accurately.

引用

页码：404 / 411

页数：8

共 26 条

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