Rapid in-situ accuracy evaluation and exposure optimization method for fringe projection profilometry

IF 5.4 3区材料科学 Q2 CHEMISTRY, PHYSICAL

ACS Applied Energy Materials Pub Date : 2024-09-24 DOI:10.1016/j.optlastec.2024.111844

Luyuan Feng , Zefeng Sun , Yifei Chen , Hongtong Li , Yifan Chen , Haoran Liu , Renhe Liu , Zongyang Zhao , Jian Liang , Zhen Zhang , Jiehu Kang , Bin Wu

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引用次数: 0

Abstract

Fringe projection profilometry (FPP) has become one of the most powerful techniques for three-dimensional (3D) non-contact measurement. However, in practical scenarios, the various reflectivity of the unknown measured objects often greatly makes the system unable to achieve the theoretical precision under the same system parameter settings. Therefore, the adaptively system parameter setting is essential to be developed. In this paper, we propose a novel metric model, i.e. the accuracy quality function, for initial accuracy evaluation using in-situ acquired images under the current parameter settings. The causes that potentially affects the ultimate accuracy are analyzed via theoretical derivation and further adopted within the evaluation model. In addition, an optimal exposure selection method based just two images is carried out to fast adjusting. Experimental results demonstrated that the proposed accuracy quality model aligns well with the actual condition. Under optimal exposure, it achieved a significant reduction in phase error by 36.15% and by 21.39% in low- and high- exposure, highlighting its strong performance and potential for high-accuracy and in-situ 3D shape measurement applications.

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条纹投影轮廓测量法的快速原位精度评估和曝光优化方法

边缘投影轮廓仪（FPP）已成为最强大的三维（3D）非接触测量技术之一。然而，在实际应用中，由于未知测量对象的反射率各不相同，在相同的系统参数设置下，系统往往无法达到理论精度。因此，自适应的系统参数设置就显得尤为重要。在本文中，我们提出了一种新的度量模型，即精度质量函数，用于在当前参数设置下使用原位获取的图像进行初始精度评估。通过理论推导分析了可能影响最终精度的原因，并在评估模型中进一步采用。此外，还采用了一种基于两幅图像的最佳曝光选择方法来进行快速调整。实验结果表明，所提出的精度质量模型与实际情况非常吻合。在最佳曝光条件下，相位误差显著降低了 36.15%，在低曝光和高曝光条件下，相位误差降低了 21.39%，凸显了其在高精度和原位三维形状测量应用中的强大性能和潜力。

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来源期刊

ACS Applied Energy Materials Materials Science-Materials Chemistry

CiteScore

10.30

自引率

6.20%

发文量

1368

期刊介绍： ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.