Zhijing Yu, Jianwen Zheng, Yongkui Tao, Jun Wu. Three-Point Light Pen Measurement Method Based on Light Field Imaging[J]. Laser & Optoelectronics Progress, 2020, 57(3): 032001
- Laser & Optoelectronics Progress
- Vol. 57, Issue 3, 032001 (2020)
Fig. 1. Flow chart of measurement system
Fig. 2. Diagram of P3P projection
Fig. 3. Diagram of principle of light field imaging
Fig. 4. Digital refocusing
Fig. 5. Light field images of all windows
Fig. 6. Light field image of local window
Fig. 7. Contrast measurement system
Fig. 8. Design of light pen
Fig. 9. Local four-dimensional light field
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Table 1. Calibration results
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Table 2. Results of contrast experiments along X-axis directionmm
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Table 3. Results of contrast experiments along Y-axis directionmm
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Table 4. Results of contrast experiments along Z-axis directionmm
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