Method for indexing scattered point cloud space of historic building
A technology of ancient buildings and scattered points, which is applied in the field of point cloud indexing, can solve problems such as single resolution and data redundancy, and achieve the effects of simple implementation, high query efficiency, and high indexing efficiency
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[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.
[0023] Such as figure 1 As shown, the present invention provides a method for spatial indexing of scattered point clouds of ancient buildings, comprising the following steps:
[0024] Step 1. Collect the original data of ancient buildings, and construct a point set according to the point coordinates, marked as {X};
[0025] Step 2. Carry out grid division on the point set {X}, construct a grid index array, and calculate the value of each unit of the grid index array according to the point coordinates in the grid;
[0026] Step 3. Set the minimum threshold for the number of points contained in the grid, merge the grids with points less than the minimum threshold into regions, or use the octree to divide the region, and set the threshold for the number of points contained in t...
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