基于径向基函数的点云岛屿孔洞自动修复

Automatic repair of point cloud holes with isolated surfaces based on radial basis function

研究了利用点云获得的模型的孔洞修复,针对目前主要通过人工修复带有岛屿面片的孔洞耗时较长的问题,提出了一种基于径向基函数(RBF)自动修复岛屿孔洞的方法。该方法首先利用最小权重三角化法修复模型主体上的孔洞,其次计算模型主体上孔洞与岛屿面片的相关性,利用模型主体上孔洞和与其相关岛屿面片周围点来计算径向基函数,最后将粗修复后细分的点调整到径向基函数描述的曲面上。实验表明,与其他方法相比,该方法能快速、准确地修复缺陷模型。

The hole patching for the triangular meshes obtained by using point clouds under existing conditions was stud- ied, and aiming at the serious time consumption problem of the manual repair method in common use at present, a method for automatic repair of the holes with isolated surfaces based on radial basis function （RBF） was proposed. This method uses the minimum weight triangulation method to fin the holes on the main body of the mesh ; then cal- culates the correlation of the holes on the main body of the mesh and the isolated surfaces, argt calculates the RBF by using the holes on the main body of the mesh and their related isolated surfaces＇ around points ; and finally, ad- justs the vertexes obtained by subdivision to the curved surface expressed by RBF. The experimental results show that the proposed method can achieve fast, accurate repair of the meshes with holes compared to other approaches.