Ship hull surface reconstruction from scattered points cloud using an RBF neural network mapping technology. (June 2023)

• Record Type: Journal Article
• Authors: Duan, Wenyang; Zhang, Peixin; Huang, Limin; Yang, Ke; Yang, Kuo
• Is Part Of: Computers & structures. Volume 281(2023)
• Publication Date: 2023-06
• Subjects: Ship hull surface reconstruction -- Scattered points cloud -- Radial Basis Function neural network -- Non-Uniform Rational B-Spline surface fitting; Structural engineering -- Data processing -- Periodicals; Electronic data processing -- Structures, Theory of -- Periodicals; 624.171
• DOI: 10.1016/j.compstruc.2023.107012
• Languages: English
• ISSNs: 0045-7949

Abstract

Highlights: The ship hull surface can be reconstructed using the RBF neural network to map the scattered points cloud. The RBF neural network model for surface fitting can transform into the NURBS surface form, satisfying the actual engineering requirements of CAD systems. The RBF neural network has better anti-noise performance in the surface reconstruction. The RBF neural network has strong ability in the surface hole repairment. Abstract: The ship hull surface reconstruction based on three-dimensional scattered points cloud is vital to Computer-Aided Design modeling of ship reverse engineering. There are several problems with traditional methods: the preprocessing of a large-scale scattered points cloud is complicated, and the result is susceptible to noise. Because of the "black box" characteristic, the surface reconstruction based on neural networks cannot apply to the practical engineering. To address these issues, combining the Radial Basis Function neural network and Non-Uniform Rational B-Spline interpolation algorithm, a new ship hull surface reconstruction method was proposed, which can satisfy the standard geometric model description in Computer-Aided Design system. Firstly, the Radial Basis Function neural network was used to pre-fit the three-dimensional scattered points cloud. Then the mathematical model of the surface was mapped. Finally, based on the bilinear interpolation algorithm, the mathematical model was transformed to a Non-Uniform Rational B-Spline surface to apply to the ship practical engineering. In addition, by comparing our method with the traditional method, the advantages of our method in surface reconstruction quality and surface repair ability were verified, which provided a new way for the application of Radial Basis Function neural network in ship reverse engineering.