Zhibo Leng, Xin Jin. Symmetrical Fringe Projection Measurement Method Based on Window Matching[J]. Laser & Optoelectronics Progress, 2023, 60(2): 0212002
- Laser & Optoelectronics Progress
- Vol. 60, Issue 2, 0212002 (2023)
Fig. 1. Dual-frequency method
Fig. 2. Three-frequency method
Fig. 3. Symmetrical phase and wrapped phase
Fig. 4. Window matching
Fig. 5. Measurement grating diagrams. (a)-(d) High-frequency four-step phase shifting diagram; (e)-(f) symmetrical fringe diagram; (g)-(j) low-frequency four-step phase shifting diagram; (k)-(n) single-frequency four-step phase shifting diagram
Fig. 6. Phase results. (a) Wrapped phase; (b) symmetrical phase; (c) fringe order
Fig. 7. Comparison of absolute phase and error. (a)-(c) Absolute phase; (d)-(f) phase error
Fig. 8. Three-dimensional point cloud. (a) Dual-frequency method; (b) three-frequency method; (c) proposed method
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Table 1. Test results of RMSE
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Table 2. Point cloud accuracy comparison
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