Shujuan Yang, Keshu Zhang, Yongshe Shao. Classification of Airborne LiDAR Point Cloud Data Based on Multiscale Adaptive Features[J]. Acta Optica Sinica, 2019, 39(2): 0228001
- Acta Optica Sinica
- Vol. 39, Issue 2, 0228001 (2019)
Fig. 1. Local space coordinate system of adjacent points
Fig. 2. Classification of bush area. (a) Large scale; (b) small scale
Fig. 3. Classification of building. (a) Large scale; (b) small scale
Fig. 4. Flowchart of multiscale adaptive-feature classification
Fig. 5. Experimental data
Fig. 6. Distribution of feature importance for different feature combinations
Fig. 7. Classification results of different feature sets. (a) Classical geometric statistical feature set; (b) PFH feature set; (c) combinational feature set
Fig. 8. Distribution of feature importance at different scales
Fig. 9. Classification results based on feature set with different scales. (a) Large scale; (b) small scale; (c) multiscale
Fig. 10. Classification results of C area based on feature set with different scales. (a) Large scale; (b) small scale; (c) multiscale
Fig. 11. Classification results of D area based on feature set with different scales. (a) Large scale; (b) small scale; (c) multiscale
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Table 1. Classification accuracy for different feature sets
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Table 2. Classification accuracy at different scales
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