Lei Zhu, Xingsheng Deng, Chengbin Xing, Kang Xu. Moving Surface Filtering Algorithm Based on Multilevel Seed Point Optimization[J]. Laser & Optoelectronics Progress, 2020, 57(17): 172801
- Laser & Optoelectronics Progress
- Vol. 57, Issue 17, 172801 (2020)
Fig. 1. Flow chart of the algorithm
Fig. 2. Grid index diagram. (a) First-level grid; (b) second-level grid
Fig. 3. Correspondence between the nodes of the KD tree and the plan sub region
Fig. 4. Screening and judgement diagram of seed point. (a) Seed point distribution; (b) slope screening for second-level seed point
Fig. 5. Points normals and feature plane
Fig. 6. View of points distribution after filtering
Fig. 7. Comparison of the three types of errors for the two algorithms. (a) Error Ⅰ; (b) error Ⅱ; (c) total error
Fig. 8. Comparison with total errors of other eight filtering algorithms
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Table 1. Data characteristics and initial parameters
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Table 2. Comparison of three types of errors with classical moving surface algorithm
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