Automatic classification method of airborne laser radar point cloud data
An airborne lidar, point cloud data technology, applied in electrical digital data processing, special data processing applications, computer parts, etc. good robustness
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[0019] Specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings and examples:
[0020] (1) The kd-tree data structure is used to store and manage the 3D lidar point cloud data, which can realize the quick query of the nearest neighbor points of a given point, and the nearest neighbor points are selected according to the Euclidean distance from the query point to the given point. Once the number N of the nearest neighbor points is set, the N neighbor points with the closest Euclidean distance to a given point can be quickly queried through the kd-tree. The kd-tree data structure belongs to the prior art, and will not be described in detail in the present invention. Where k is the dimension of the space, which generally takes values of 2, 2.5, and 3, and the value of 3 is suggested by the present invention.
[0021] (2) Set the maximum slope threshold allowed in the segmentation segment, and cluster and s...
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