Fluorescence strobo-stereoscopy for specular reflection-suppressed full field of view imaging
Fluorescence strobo-stereoscopy for specular reflection-suppressed full field of view imaging
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DOI：
10.1016/j.measurement.2022.110907
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发表时间：
2022-03
期刊：
影响因子：
5.6
通讯作者：
Xiangyu Guo;Chabum Lee
中科院分区：
文献类型：
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作者：
Xiangyu Guo;Chabum Lee
本文引入荧光频闪体视技术（FSS），以抑制强镜面反射，并使全视场（FFOV）的三维表面成像，而零件是旋转。目标表面的镜面反射会显著降低图像质量，并且对于高反射表面测量变得至关重要。在FSS中，施加在加工表面上的掺杂荧光染料的流体被入射的紫外光激发，并根据斯托克斯定律成为新的光源。因此，可以通过将荧光与激发光分离来抑制平滑表面的镜面反射。开发的FSS包括一对成像相机，空间滤波器，和激发光源。因此，FSS有效地抑制了镜面反射，并通过增强旋转目标表面的对比度来改善加工零件的FFOV 3D表面图像质量。3D成像的这种增强允许识别零件的制造公差并检测表面特征。当靶区尺寸为4.07 mm和0.215 mm时，FSS的轴向和侧向精度误差分别为2.3%和1.4%。对圆柱形目标样品进行了全视图重建，并评估了相应的圆柱度和直径偏差。讨论了流体介质效应和靶面质量效应。
This paper introduces fluorescence strobo-stereoscopy (FSS) to suppress strong specular reflection and enable the full field of view (FFOV) 3D surface imaging while the part is rotating. Specular reflection off the target surface significantly degrades the image quality and becomes critical for highly reflective surface measurements. In FSS, the fluorescent dye-doped fluid applied on the machined surface is excited upon incident ultra-violet light and becomes a new light source by Stokes' Law. Thus, specular reflection off of smooth surface can be suppressed by separating the fluorescent light from the excitation light. The developed FSS comprises a pair of imaging cameras, spatial filters, and an excitation light source. As a result, FSS effectively rejected the specular reflection and improved the FFOV 3D surface image quality of the machined part by enhancing contrast in the rotating target surface. Such enhancements in 3D imaging allowed to identify manufacturing tolerance of the part and to detect the surface features. The axial and lateral accuracy errors of FSS were 2.3% and 1.4% with the target size of 4.07 mm and 0.215 mm, respectively. A whole view reconstruction of the cylindrical target sample was performed, and the corresponding cylindricity and diameter deviation were assessed. The fluid media effect and the target surface quality effect were discussed.