Local increasing type curved-surface reconstruction method of large-scale point cloud data
A point cloud data and cloud data technology, applied in the field of 3D surface reconstruction of objects, can solve problems such as high burst noise, wrong assignment, high sampling rate, etc., and achieve the effect of improving efficiency and accuracy
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[0026] A specific embodiment of the present invention is given below. In this embodiment, the method for point cloud data to perform curved surface growth reconstruction in priority order includes the following steps:
[0027] (1) Roughly calculate the normal vector of the points in the point cloud data, and perform cluster analysis based on the normal vector to obtain a point cloud set with first-level priority reconstruction. Among them, the "rough calculation" process is: select a certain discrete data point in the point cloud data, select n point cloud data in its neighborhood with this point as the center, and use a local quadratic function to fit these n points Perform plane fitting, and then obtain the normal vector of the fitted plane.
[0028] The low curvature means that the main area of the curved surface does not have drastic curvature changes, and the low noise means that the main area of the curved surface does not have abrupt noise.
[0029] The category selectio...
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