Yongjun ZHANG, Xingbei HUANG, Xinyi LIU. A Terrain-adaptive Airborne LiDAR Point Cloud Filtering Method Using Regularized TPS [J]. Journal of Geo-information Science, 2020, 22(4): 898
- Journal of Geo-information Science
- Vol. 22, Issue 4, 898 (2020)
Fig. 1. Seed point selection and 8-neighborhood region growing
Fig. 2. Errors in region growing of reference points
Fig. 3. Regions with unreliable reference points
Fig. 4. TPS with different regularization coefficient λ
Fig. 5. RGB map of original point clouds and binary image of region growing results in site 5
Fig. 6. Edge detection results in the part of viaduct connecting to the ground in site 8
Fig. 7. RGB maps of original point clouds and colored maps of filtering results in Guangzhou sites
Fig. 8. Part of filtering results of ISPRS test sites
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Table 1. Terrain features in test sites
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Table 2. Comparison of error rate using different filtering methods in Guangzhou sites (%)
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Table 3. Comparison of total error rate using different filtering methods in ISPRS test sites (%)
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Table 4. Comparison of time costs using different filtering methods in Guangzhou sites
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