Zhaoxu Wang, Yanjun Fu, Ye Li, Kejun Zhong, Wei Bao. Calibration Method for Line Structured Light Measurement System Based on Vanishing Point[J]. Laser & Optoelectronics Progress, 2021, 58(22): 2212003
- Laser & Optoelectronics Progress
- Vol. 58, Issue 22, 2212003 (2021)
Fig. 1. Model of line structured light measurement
Fig. 2. Model of one-dimensional direction calibration
Fig. 3. Position determination of world coordinate system
Fig. 4. Structure of experimental setup
Fig. 5. Influence of SNR on slope of feature strip
Fig. 6. Influence of SNR on calibration error
Fig. 7. Calibrated images processing. (a)--(c) Original images; (d)--(f) processed images
Fig. 8. Measurement of standard step block. (a) Object picture; (b) measured point clouds; (c) wrapped result
Fig. 9. Measured height corresponding to 23rd stripe
Fig. 10. Comparison of RMSE
Fig. 11. Measurement of sphere cover. (a) Object picture; (b) measured point clouds; (c) wrapped result
Fig. 12. Diagram of deviation distribution
Fig. 13. Comparison of absolute error
Fig. 14. Measurement of complex models. (a)--(d) Object models; (e)--(h) measured point clouds; (i)--(l) wrapped results
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Table 1. Calibration results in three dimensions
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Table 2. RMSE analysis unit: mm
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Table 3. MAE analysis unit: mm
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