Full
Outline
Point cloud data of mine roadways acquired by three-dimensional laser scanning often contain noise interference. Existing filtering methods struggle to balance point cloud data simplification with the accurate preservation of roadway geometric features. In contrast, adaptive filtering can dynamically adjust filtering parameters based on the characteristics of the original data, thereby providing a high-quality data foundation for subsequent roadway deformation monitoring. An adaptive progressive point cloud filtering algorithm was proposed, which integrated an improved adaptive voxel filter and a layer-constrained dynamic radius filter to achieve precise point cloud denoising. Specifically, the improved voxel filter can adaptively adjust voxel grid sizes according to the geometric complexity of the roadway, effectively simplifying the point cloud while better preserving its geometric features. The layered constraint dynamic radius filter optimized the dynamic radius parameters through a layered constraint model, enabling the accurate elimination of residual noise. Experimental results show that, compared with traditional voxel filtering, the improved voxel filter, and their conventional combinations, the proposed algorithm achieves a point cloud simplification rate exceeding 92% while controlling the change rates of point cloud volume and surface area within 3%. It can provide reliable data preprocessing technical support for mine roadway deformation monitoring.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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