Accurate fringe order recognition with adaptive morphological operations for 3D measurement

H Wu, Y Cao, Y Dai - Optics and Lasers in Engineering, 2023 - Elsevier
Temporal phase unwrapping (TPU) techniques are vulnerable to inaccurate recognition of
fringe order due to various factors, including noise, motion blur and defocusing effects. The …

Specular surface deformation measurement based on projected-speckle deflectometry with digital image correlation

C Xiong, Y Gao, F Zhu - Optics and Lasers in Engineering, 2023 - Elsevier
Traditional deflectometry techniques suffer from the issue of out-of-focus image acquisition
since the camera is pointed directly at the specular surface, and the image quality is greatly …

Correcting projector lens distortion in real time with a scale-offset model for structured light illumination

G Zhang, B Xu, DL Lau, C Zhu, K Liu - Optics Express, 2022 - opg.optica.org
In fringe projection profilometry, inevitable distortion of optical lenses decreases phase
accuracy and decreases the quality of 3D point clouds. For camera lens distortion, existing …

Segmentation phase measuring deflectometry for measuring structured specular surfaces

Y Xu, Y Wang, F Gao, X Jiang - The International Journal of Advanced …, 2022 - Springer
Accurate and fast three-dimensional (3D) measurement for industrial products/components
designed to possess 3D structured shapes is a key driver for improved productivity …

Wavefront-coded phase measuring deflectometry for the all-focused measurement

Z Niu, J Wang, Y Tian, Z Wu, C Wei, J Shao - Optics Letters, 2022 - opg.optica.org
Phase measuring deflectometry is a powerful measuring method for complex optical
surfaces, which captures the reflected fringe images encoded on the screen under the …

Dynamic computer-generated moiré profilometry based on high-density binary coding

B Qin, Y Cao - Applied Optics, 2023 - opg.optica.org
A dynamic computer-generated moiré profilometry based on high-density binary coding is
proposed. For making full use of the maximum refresh rate and the maximum resolution of …

[PDF][PDF] 二值条纹离焦投影技术综述

付莉娜, 杨静雯, 李雁玲, 张宗华, 高楠… - Laser & …, 2022 - researching.cn
摘要光学三维测量技术发展已经非常成熟, 在工业制造, 生物医疗, 文物保护等领域都有着广泛的
应用. 但传统条纹投影测量中使用的正弦条纹无法避免投影仪和相机Gamma 效应的影响 …

Aided imaging phase measuring deflectometry based on concave focusing mirror

Z Li, N Gao, Z Meng, Z Zhang, F Gao, X Jiang - Photonics, 2023 - mdpi.com
With the rapid development of aerospace, high-speed train, and automotive industries, the
demand for the measurement of high-precision specular components is increasing. The …

Real-time compensation of projector lens distortion using a linear-grid model in fringe projection profilometry

Y Bai, G Zhang, DL Lau, B Zhang, B Xu… - Optical …, 2023 - spiedigitallibrary.org
In fringe projection profilometry, applying pre-distortion to fringe patterns reduces the errors
caused by projector lens distortion. However, it is important to note that discontinuous fringe …

3D single-pixel imaging at the near-infrared wave band

H Zhao, P Li, Y Ma, S Jiang, B Sun - Applied Optics, 2022 - opg.optica.org
Focal plane detector array technology in the infrared wave band is expensive or
underdeveloped, and the detection efficiency is low, while single-pixel imaging (SPI) offers …