Hao WEN, Zhao-zong MENG, Nan GAO, Zong-hua ZHANG. Error Measurement and Compensation of Multi-channel Fringe Projection System[J]. Acta Photonica Sinica, 2020, 49(7): 712004
- Acta Photonica Sinica
- Vol. 49, Issue 7, 712004 (2020)
Fig. 1. Multi-channel 3D measurement principle process
Fig. 2. Schematic diagram of folded phase
Fig. 3. Multi-channel 3D measurement system structure
Fig. 4. Schematic diagram of the error relation of the collected light intensity
Fig. 5. Construction process diagram of the position deviation relation
Fig. 6. Matching pixels
Fig. 7. System error compensation method
Fig. 8. Experimental system
Fig. 9. Intensity distribution of each color channel in a single-color fringe image
Fig. 10. Pixel deviation distribution of red and green fringe image
Fig. 11. Phase difference distribution of a row in the red and green vertical fringe image
Fig. 12. Unwrapped phase distribution of a row in a color fringe image
Fig. 13. 3D topography measured by the color fringe projection system
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Table 1. Measurement accuracy of step before and after compensation (unit: mm)
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