Data preprocessing technique of scattered point cloud in reverse engineering
Qiao Wei-feng · Journal of Lanzhou University of Technology · 2006
A method of data preprocessing based on scattered point cloud was proposed.This method consisted of four parts: the scattered point cloud was segmented by Dirichlet method and then triangulated;the center point in each triangulation area was found and its local coordinate was set up,and a mathematical model of normal distribution was used to delete the noise points;further a B-B surface was made on each triangulation network to perform data smoothing processing;and finally,a supplementary processing was conducted for the missing data points.After processed in foregoing way,the data could basically meet the requirement of successive reconstruction of curved surfaces and curves.