Hui Chen, Hongyan Wu, Ning Yang, Heping Huang, Weibin Liang. An Active Structured Light 3D Point Cloud Measurement for Orange Shape Based On Adaptive Co-Opposite-Direction Slicing Method[J]. Laser & Optoelectronics Progress, 2023, 60(9): 0928003
- Laser & Optoelectronics Progress
- Vol. 60, Issue 9, 0928003 (2023)
Fig. 1. 3D measurement frame diagram of orange based on adaptive co-opposite-direction slicing method
Fig. 2. Point cloud data acquisition system
Fig. 3. Complete point cloud model of registered oranges in different coordinate systems
Fig. 4. Height and diameter of the orange simulation model
Fig. 5. Schematic of positive and opposite cutting of orange model. (a) Slicing from top to bottom; (b) slicing from bottom to top
Fig. 6. Schematic diagram of k-nearest neighbor concave hull algorithm (k=3)
Fig. 7. Adaptive slicing of point cloud
Fig. 8. Pictures of the orange. (a) Simulation model; (b) real orange
Fig. 9. Measurement of shape index of the orange. (a) Height; (b) D1; (c) D2; (d) volume
Fig. 10. Relative error of the orange shape index
Fig. 11. Calculation results of orange shape indexes under Ⅰ and Ⅱ. (a) Height; (b) D1; (c) D2; (d) volume
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Table 1. Materials needed for experiments
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Table 2. Measurement result of the orange simulation model appearance indicators
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Table 3. Measurement results of orange shape parameters
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Table 4. Measurement error comparison of orange shape parameters under different methods
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