基于径向基函数的散乱点云孔洞修复算法  

Hole repairing algorithm in scattered point cloud based on radial basis function

作　　者：晏海平 吴禄慎[1] 陈华伟[1] 

机构地区：[1]南昌大学机电工程学院,江西南昌330031

出　　处：《计算机工程与设计》2014年第4期1253-1257,共5页Computer Engineering and Design

基　　金：国家自然科学基金项目(51065021;51365037)

摘　　要：针对散乱点云模型中的孔洞,提出了一种基于径向基函数的孔洞修补算法。提取散乱点云的孔洞边界特征点,并在孔洞多边形的最小二乘特征平面中进行孔洞填充;利用孔洞边界点及其邻域信息建立基于径向基函数的隐式曲面;采用梯度下降法将孔洞填充点向隐式曲面调整,实现散乱点云孔洞的修复。实验结果表明,该算法能实现散乱点云模型孔洞的有效修复,恢复原有模型的基本几何特征。Due to existing holes in the scattered point models, a hole-filling algorithm based^on radial basis function. First of all, the hole boundary point of point cloud is extracted, and the hole is filled in the hole polygon tangent plane. Secondly, the infor- mation of hole boundary points and its neighborhoods are used to establish an implicit surface based on radial basis function. Fi- nally, the filled points are adjusted to the implicit surface by the method of gradient descent, and the repairing of the hole based on scattered point cloud is achieved. The experimental results show that the algorithm can repair the hole of scattered point cloud effectively, regain the basic geometric features of the original model.

关 键 词：散乱点云 特征平面 径向基函数 隐式曲面 孔洞修复 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]