High dynamic defocus response method for binary defocusing fringe projection profilometry

2021 ◽  
Author(s):  
zhuojun zheng ◽  
Jian GAO ◽  
Yizhong Zhuang ◽  
Lanyu Zhang ◽  
Xin Chen
Keyword(s):  
Fringe Projection ◽  
High Dynamic ◽  
Response Method ◽  
Binary Defocusing ◽  
Fringe Projection Profilometry

Calibration method for fringe projection profilometry with a binary defocusing technique

2017 ◽  
Vol 24 (4) ◽  
pp. 495-504 ◽  
Author(s):  
Xuexing Li ◽  
Miao Gong ◽  
Zhao Zhang ◽  
Zhijiang Zhang ◽  
Chen Yang
Keyword(s):  
Calibration Method ◽  
Fringe Projection ◽  
Binary Defocusing ◽  
Fringe Projection Profilometry

scholarly journals High-Accuracy 3-D Sensor for Rivet Inspection Using Fringe Projection Profilometry with Texture Constraint

Sensors ◽  
2020 ◽  
Vol 20 (24) ◽  
pp. 7270
Author(s):  
Yunfan Wang ◽  
Huijie Zhao ◽  
Xudong Li ◽  
Hongzhi Jiang
Keyword(s):  
Measurement Accuracy ◽  
Dynamic Range ◽  
High Dynamic Range ◽  
High Accuracy ◽  
Additional Constraint ◽  
Fringe Projection ◽  
Diameter Measurement ◽  
Edge Points ◽  
High Dynamic ◽  
Fringe Projection Profilometry

Riveted workpieces are widely used in manufacturing; however, current inspection sensors are mainly limited in nondestructive testing and obtaining the high-accuracy dimension automatically is difficult. We developed a 3-D sensor for rivet inspection using fringe projection profilometry (FPP) with texture constraint. We used multi-intensity high dynamic range (HDR) FPP method to address the varying reflectance of the metal surface then utilized an additional constraint calculated from the fused HDR texture to compensate for the artifacts caused by phase mixture around the stepwise edge. By combining the 2-D contours and 3-D FPP data, rivets can be easily segmented, and the edge points can be further refined for diameter measurement. We tested the performance on a sample of riveted aluminum frame and evaluated the accuracy using standard objects. Experiments show that denser 3-D data of a riveted metal workpiece can be acquired with high accuracy. Compared with the traditional FPP method, the diameter measurement accuracy can be improved by 50%.

High dynamic range 3D measurements with fringe projection profilometry: a review

2018 ◽  
Vol 29 (12) ◽  
pp. 122001 ◽  
Author(s):  
Shijie Feng ◽  
Liang Zhang ◽  
Chao Zuo ◽  
Tianyang Tao ◽  
Qian Chen ◽  
...  
Keyword(s):  
Dynamic Range ◽  
High Dynamic Range ◽  
Fringe Projection ◽  
3D Measurements ◽  
High Dynamic ◽  
Fringe Projection Profilometry

Evaluating binary defocusing quantitatively in real-time for fringe projection profilometry

2021 ◽  
Vol 60 (06) ◽  
Author(s):  
Xin Kang ◽  
Zhuoyi Yin ◽  
Shuai Dong ◽  
Cong Liu ◽  
Xiaoyuan He
Keyword(s):  
Real Time ◽  
Fringe Projection ◽  
Binary Defocusing ◽  
Fringe Projection Profilometry
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