A Simplification Method for Point Cloud of T-Profile Steel Plate for Shipbuilding

According to the requirements of point cloud simplification for T-profile steel plate welding in shipbuilding, disadvantages existing algorithms are analyzed. In this paper, a method is proposed based on octree coding and threshold surface curvature feature. method, original data divided into multiple sub-cubes with specified side lengths by coding, points that closest gravity center sub-cube kept. The k-neighborhood calculation performed order obtain features cloud. Additionally, several regions given adjustable threshold. Finally, combining random sampling regional center, can be simplified. study, after obtaining plate, compared some other methods. It found shipbuilding faster than three methods, while retaining more feature having approximately same reduction rates.