Optics and Precision Engineering, Volume. 33, Issue 6, 850(2025)
Double-specular-surface metrology by common benchmark calibration method
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Fig. 1. Schematic of double-specular-surface metrology by common benchmark calibration method
Fig. 3. Spatial location relationships between coordinate system
Fig. 4. Spatial constraint between the two surfaces of the double-specular-surface calibration plate and the two cameras
Fig. 7. Experimental results of the measuring block obtained by calibrating the common benchmark parameters using dimensional parameters of double-specular-surface calibration plate
Fig. 8. Experimental results of the measuring block obtained by calibrating the common benchmark parameters using spatial constraint relations
Table 1. Euler angle and angle difference between RPA and LCDA1
View tableView in ArticleTable 1. Euler angle and angle difference between RPA and LCDA1
Variable Pitch angle Yaw angle Roll angle RPA 2.063 0 10.783 7 4.237 2 LCDA1 2.067 9 10.781 9 4.246 3 Difference 0.004 9 0.001 8 0.009 1
Table 2. Euler angle and angle difference between RPB and LCDB1
View tableView in ArticleTable 2. Euler angle and angle difference between RPB and LCDB1
Variable Pitch angle Yaw angle Roll angle RPB 0.755 0 1.444 2 3.437 1 LCDB1 0.761 9 1.438 2 3.432 7 Difference 0.006 9 0.006 0 0.004 4
Table 3. Errors in the 3D metrology of the measuring block under different calibration methods of common benchmark parameters
View tableView in ArticleTable 3. Errors in the 3D metrology of the measuring block under different calibration methods of common benchmark parameters
Calibration method RMSE PV Based on dimensional parameters 0.164 0.362 Based on spatial constraint relations 0.076 0.207
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Wenjing HE, Yubo NI, Nan GAO, Zhaozong MENG, Zeqing YANG, Guofeng ZHANG, Wei YIN, Hongwei ZHAO, Zonghua ZHANG. Double-specular-surface metrology by common benchmark calibration method[J]. Optics and Precision Engineering, 2025, 33(6): 850
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Received: Nov. 8, 2024
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Published Online: Jun. 16, 2025
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