Weiyu LIANG, Chao YE, Qiu HU, Sheng LIU. Measurement method of repeated positioning accuracy of pinhole runnerbased on combination of laser and CCD[J]. Journal of Applied Optics, 2021, 42(5): 919
- Journal of Applied Optics
- Vol. 42, Issue 5, 919 (2021)
Fig. 1. Composition of measurement system
Fig. 2. Angular deviation of laser spot center
Fig. 3. Flow chart of automatic measurement
Fig. 4. Laser spot brightness under different exposure time
Fig. 5. Binary image
Fig. 6. Edge detection image
Fig. 7. Establishment of coordinate system
Fig. 8. Calculation results of circle fitting
Fig. 9. Experimental platform of pinhole runner
Fig. 10. Image before and after rotation
Fig. 11. Distribution of laser spot center
Fig. 12. X position deviation of laser spot center
Fig. 13. Y position deviation of laser spot center
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Table 1. Measurement results of laser interferometer
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Table 2. Measurement results of laser and CCD
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