Kaiyuan GAO, Lei LIU, Haihua CUI, Pengcheng LI, Xiaoxu LIU, Lin LIU. Multi-scale decomposition of point cloud data based on wavelet transform[J]. Optics and Precision Engineering, 2023, 31(3): 340

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- Optics and Precision Engineering
- Vol. 31, Issue 3, 340 (2023)

Fig. 1. Schematic diagram of multi-scale 3D measurements

Fig. 2. Multilevel wavelet decomposition space

Fig. 3. Convolutional nuclei

Fig. 4. Grid convolution

Fig. 5. Macro-micro combined measurement results of blade

Fig. 6. Decomposition results of wavelet method

Fig. 7. Decomposation results of random sampling method

Fig. 8. Decomposation results of curvature sampling method

Fig. 9. Results of scale spatial decomposition method

Fig. 10. Comparison of differences between different decomposition methods

Fig. 11. Pore registration results

Fig. 12. Macro-micro combined measurement results of raster

Fig. 13. Grid edge registration results

Fig. 14. Inspection results of leaf without pores

Fig. 15. Leaf edge registration results
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Table 1. Statistic of wavelet method decomposition results
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Table 2. Statistics of random sampling decomposition results
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Table 3. Statistics of curvature sampling decomposition results
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Table 4. Statistics of scale spatial decomposition results
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Table 5. Comparison of multiple decomposition registration error for wavelet method
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Table 6. Approximate scale of raster constrains the comparison of registration errors
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Table 7. Comparison of approximate scale constraint registration errors of blade edges

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