Point cloud simplification method based on curved surface change
A point cloud simplification and curved surface technology, applied in image data processing, instruments, etc., can solve the problems of simple and scattered point cloud data not suitable for surface features, low efficiency of simplification, and large amount of calculation
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[0044] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0045] Such as figure 1 The flow chart of the present invention shown, the point cloud streamlining method based on surface variation, comprises the following steps:
[0046] (1) Spatially rasterize the scattered point cloud, determine the number of point clouds in each grid and the grid position to which each point belongs, and search for a point P in each grid i The nearest k neighbor points of , thereby establishing the spatial field relationship, wherein, i=1,2,...,N, N is the total number of points;
[0047] (2) Calculation point P i The surface change δ(P i );
[0048] (3) Divide the point cloud into three feature regions with different characteristics, which are the planar neighborhood type point set Q 1 , sub-feature neighborhood type point set Q 2 and feature-rich neighborhood type point set Q 3 ,Q 1 , Q 2 , Q 3 The feature...
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