Peng ZHAO, Hongwei ZHANG, Songhua WU. Research and implementation of optical raindrop spectrometer based on machine vision[J]. Journal of Atmospheric and Environmental Optics, 2024, 19(6): 611
- Journal of Atmospheric and Environmental Optics
- Vol. 19, Issue 6, 611 (2024)
Fig. 1. Working schematic of the optical drop spectrometer
Fig. 2. Diagram raindrop imaging
Fig. 3. Diagram of particle velocity distortion effect. (a) Theoretical slice projection; (b) directly assembled original images
Fig. 4. Software design flowchart
Fig. 5. Raw image edge (a) and interpolated restored image edge (b)
Fig. 6. Diagram of experimental platform
Fig. 7. X-axis directional error map of 0.2 mm standard bar
Fig. 8. Error map in the measuring area of 0.2 mm standard gauge bar
Fig. 9. Schematic diagram of steel ball falling test (a) and laboratory device diagram (b)
Fig. 10. Diameter measurement error distribution diagram of steel ball with different diameters
Fig. 11. Velocity measurement error distribution diagram of steel ball with different diameters
Fig. 12. Distribution of measured values of droplet diameter (a) and velocity (b)
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Table 1. Parameters of optical raindrop spectrometer system
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Table 2. Comparison table of equivalent falling parameters
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Table 3. Statistical results of steel ball experiment
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