| 1 | Three-Dimensional Shape Measuring Method Based on Dual-Frequency Digital Moiré Fringe显示文摘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. | Hu Hailing He Renji Chen Yang Zhang Peiqing Shen Xiang Da Shixun Song Baoan | 2023 | 激光与光电子学进展2023，60，8： | 0 |
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