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李文宁, 张爱武, 王书民, 胡少兴, 张晓. 地面激光点云阶层式分类方法[J]. 计算机辅助设计与图形学学报, 2015, 27(8): 1555-1561.
引用本文: 李文宁, 张爱武, 王书民, 胡少兴, 张晓. 地面激光点云阶层式分类方法[J]. 计算机辅助设计与图形学学报, 2015, 27(8): 1555-1561.
Li Wenning, Zhang Aiwu, Wang Shumin, Hu Shaoxing, Zhang Xiao. Hierarchical Classification Method for Terrestrial Laser Point Clouds[J]. Journal of Computer-Aided Design & Computer Graphics, 2015, 27(8): 1555-1561.
Citation: Li Wenning, Zhang Aiwu, Wang Shumin, Hu Shaoxing, Zhang Xiao. Hierarchical Classification Method for Terrestrial Laser Point Clouds[J]. Journal of Computer-Aided Design & Computer Graphics, 2015, 27(8): 1555-1561.

地面激光点云阶层式分类方法

Hierarchical Classification Method for Terrestrial Laser Point Clouds

  • 摘要: 针对不同地物之间点云特征的多样性和树木点云分布的无规律性,导致一般方法分类精度低的问题,提出一种基于对象的地面激光点云阶层式分类方法.首先采用欧氏距离聚类法将非地面点云分割;然后提出一种法向散乱系数计算方法,并用于树木的提取;最后结合点云对象的点个数、高程均值和平面拟合残差特征实现其他地物的分类.实验结果表明,该方法能有效地将复杂地物分类,相比于投影点密度法和支持向量机法分类精度更高.

     

    Abstract: With the diversity of point clouds features between different objects and the irregularity of tree point clouds distribution, the lower classification accuracy of traditional method is a challenging problem. The hierarchical classification method for terrestrial laser scanning data is proposed. The non-ground points are segmented according to the Euclidean distance cluster. Scatter coefficient of normal presented by this paper is got. The trees are extracted by the scatter coefficient of normal. Combining with other features such as the mean of elevation, plane fitting residual, the number of points establishes a hierarchical classification method for point cloud. Experimental result show that the complex surface features can be classified. Compared with the density of projected point and SVM, the effectiveness of the proposed method has a demonstrable effect.

     

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