Infrared and Laser Engineering, Volume. 51, Issue 9, 20210933(2022)
Calibration method and accuracy evaluation of visual target with double screen for straight pipe jacking machine
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Fig. 4. Schematic diagram of three common point coordinate frame conversion algorithm
Fig. 7. (a) Repeatability accuracy of static measurement of coordinates; (b) Repeatability accuracy of static measurement of heading angle
Fig. 8. Schematic diagram of heading angle measurement accuracy evaluation experiment
Fig. 9. Experimental data of heading angle measurement accuracy evaluation
Table 1. Parameters of hardware
View tableView in ArticleTable 1. Parameters of hardware
Name Parameter Camera Model：Basler aca1300-60 gm Resolution：1280×1024 pixel Pixel size：5.3 μm×5.3 μm Frame rate：60 fps Total station Model：Leica TS12 Ranging accuracy：2 mm±2 ppm Angle accuracy：2″ Repeatability precision：0.1 mm Inclinometer Angle accuracy：0.01° One dimensional turntable Angle accuracy：2″
Table 2. Experiment data of coordinate accuracy evaluation
View tableView in ArticleTable 2. Experiment data of coordinate accuracy evaluation
No. X/mm Y/mm Z/mm ${d_{{X} } }$ ${d_{{Y} } }$ ${d_{{Z} } }$ 1 $P_{\text{0} }^{{s} }$ 24.48 −25.31 79.78 −0.33 0.26 −0.12 $P_{\text{1} }^{{s} }$ 24.15 −25.05 79.66 2 $P_{\text{0} }^{{s} }$ 69.87 −25.30 50.30 −0.94 −0.63 −0.73 $P_{\text{1} }^{{s} }$ 68.93 −25.93 49.57 3 $P_{\text{0} }^{{s} }$ 11.12 −25.69 31.06 −0.43 −0.77 0.51 $P_{\text{1} }^{{s} }$ 10.69 −26.46 31.57 4 $P_{\text{0} }^{{s} }$ −60.41 −25.76 8.43 −0.24 0.18 −0.14 $P_{\text{1} }^{{s} }$ −60.65 −25.58 8.29 5 $P_{\text{0} }^{{s} }$ 53.42 −26.47 −66.79 −0.83 −0.72 −0.34 $P_{\text{1} }^{{s} }$ 52.59 −27.19 −67.13 6 $P_{\text{0} }^{{s} }$ 64.26 −25.73 −43.86 −0.27 −0.17 −0.18 $P_{\text{1} }^{{s} }$ 63.99 −25.9 −44.04
Table 3. Errors analysis
View tableView in ArticleTable 3. Errors analysis
Error type Error source Calibration errors of dual screen visual target The error of image recognition The error of total station measurement The error of coordinate system conversion Measurement errors of attitude angles Calculating error of light vector The error of inclinometer measurement
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Zhe Huang, Qingde Yan, Qian Li, Erjing Cheng, Xiaoling Shen, Yeqian Xu. Calibration method and accuracy evaluation of visual target with double screen for straight pipe jacking machine[J]. Infrared and Laser Engineering, 2022, 51(9): 20210933
Paper Information
Category: Photoelectric measurement
Received: Mar. 20, 2022
Accepted: --
Published Online: Jan. 6, 2023
The Author Email: Li Qian (qian02.li@samsung.com)
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