Patent ID: 11861793
Assignee: HUNAN UNIVERSITY
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 4:
5. The method for merging the surface skin three-dimensional data according to claim 2, wherein step S200 specifically comprises the following steps:
step S210: for each point yi and i=1, 2, . . . , n in the design model three-dimensional data, searching for k points closest to the point yi in the point cloud Y to form a point set K={k1, k2, . . . , kk}, wherein the point set K⊆Y; and
step S220: performing least squares spherical surface fitting on the point set K and obtaining a sphere center oi and a radius ri; wherein a unit normal vector of the point yi is ni=(oi−xi)/∥oi−xi∥, where xi represents the points in the point cloud X in the actually-measured three-dimensional data, and the point cloud Y corresponds to a normal vector set N={n1,n2,n3, . . . ,ni, . . . ,nn} and a neighborhood radius set R={r1,r2,r3, . . . ,ri, . . . ,rn}.