Min Lü, Yun Meng. Study on Point Cloud Management Strategy Based on Octree-Like Index[J]. Laser & Optoelectronics Progress, 2020, 57(14): 141025
- Laser & Optoelectronics Progress
- Vol. 57, Issue 14, 141025 (2020)
Fig. 1. Octree-like multi-layer index structure
Fig. 2. Schematic of the octree-like plane division
Fig. 3. Flowchart for establishing the octree-like index structure
Fig. 4. Schematic of linear coding
Fig. 5. Relationship between point and KD space
Fig. 6. Spatial segmentation schematic of octree. (a) Uniform segmentation; (b) nonuniform segmentation
Fig. 7. Local comparison of sampling effects under different spatial structures of Turbine Blade. (a) Random sampling; (b) KD-tree sampling; (c) octree index sampling; (d) quad+KD-tree sampling; (e) 3DOR*-tree sampling; (f) octree-like sampling
Fig. 8. Local comparison of sampling effects under different spatial structures of Turbine Blade. (a) Random sampling; (b) KD-tree sampling; (c) octree index sampling; (d) quad+KD-tree sampling; (e) 3DOR*-tree sampling; (f) octree-like sampling
Fig. 9. Local comparison of sampling effects under different spatial structures in Haloxylon. (a) Random sampling; (b) quad+KD-tree sampling; (c) 3DOR*-tree sampling; (d) octree-like sampling
Fig. 10. Local comparison of sampling effects under different spatial structures of Haloxylon. (a) Random sampling; (b) quad+KD-tree sampling; (c) 3DOR*-tree sampling; (d) octree-like sampling
Fig. 11. Comparison of indexing time under different KD thresholds
Fig. 12. Comparison of index memory usage under different KD thresholds
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Table 1. Contrast table of five kinds of index building times
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Table 2. Contrast table of memory occupancy between five kinds of index buildingM
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Table 3. Contrast table of memory occupancy between five kinds of index buildingms
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