Sign point hole filling method based on neural network in tri-D scanning point cloud
A three-dimensional scanning and neural network technology, which is applied to the field of filling the holes of landmark points based on neural network in the three-dimensional scanning point cloud. , The effect of point cloud feature representation is good and the method is simple
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[0035] A neural network-based method for filling holes in landmark points in a 3D scanning point cloud:
[0036] Step 1: For the hole formed by the marker points pasted on the surface of the head of Venus, in the 3D scanning point cloud, when obtaining the sample point set around the hole, according to the 3D coordinates of the marker points (x b ,y b ,z b ), take the data points in the cube centered on the marker point as the sample point P for hole filling s (s=0, 1, ..., t), the 8 vertices of the cube are (x b -r,y b -r,z b -r), (x b -r,y b -r,z b +r), (x b -r,y b + r, z b -r), (x b -r,y b + r, z b +r), (x b +r,y b -r,z b -r), (x b +r,y b -r,z b +r), (x b +r,y b + r, z b -r), (x b +r,y b + r, z b +r), where r is the selected domain value, in order to obtain a suitable sample point set, take 1.2 to 1.5 times the radius of the marker point;
[0037] Step 2: According to the sample point data P s , training the neural network for filling holes, the n...
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