基于改进的径向基函数的点云孔洞修复方法  

Filling Holes in Point Cloud Based on Improved Radial Basis Function

作　　者：韩澳禧 杨明龙[1,2] 唐秀娟 夏永华 钟雪[1,2] Han Aoxi;Yang Minglong;Tang Xiujuan;Xia Yonghua;Zhong Xue(Faculty of Land Resources Engineering,Kunming University of Science and Technology,Kunming 650093,Yunnan,China;Application Engineering Research Center of spatial information surveying and mapping technology in Plateau and mountainous areas set by Universities in Yunnan Province,Kunming 650093,Yunnan,China;Kunming Surveying and Mapping Institute,Kunming 650093,Yunnan,China)

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093 [2]云南省高校高原山区空间信息测绘技术应用工程研究中心,云南昆明650093 [3]昆明市测绘研究院,云南昆明650093

出　　处：《应用激光》2024年第12期138-147,共10页Applied Laser

基　　金：国家自然科学基金(No.41861054,No.62266026)。

摘　　要：使用三维激光扫描技术获取点云数据时,往往因为被测物体、测量仪器和测量环境等原因,无法获取被测物体完整点云数据,产生孔洞。若直接使用该数据进行操作会影响建模及重构的质量和精度。因此,需要对采集到的孔洞进行修复工作,本文利用径向基函数(Radial Basis Function,RBF)对所得的点云数据进行修复,对原有算法的修复精度和速度进行改进,对凸面模型的修复较为理想。该算法在Visaual Studio 2019上实现,通过检测孔洞边界、初始化网格、最小二乘网格、建立隐式曲面及调整点到隐式曲面上等操作对点云孔洞进行修复。经实验表明,该方法可以很好地填补表面的孔洞部位,并且修复的位置与原区域保持平滑,可应用在对凸曲面、室内不规则物体及隧道等模型的修复上。3D laser scanning technology,while effective for acquiring point cloud data,often encounters limitations due to factors such as the measured object,measuring instrument,and environment,leading to incomplete data and holes within the dataset.Utilizing such incomplete data directly can compromise the quality and precision of subsequent modeling and reconstruction processes.Consequently,hole repair is a critical step.This paper presents an enhanced radial basis function(RBF)algorithm for repairing point cloud data,which improves upon the accuracy and speed of the original method,making it particularly suitable for repairing convex models.This algorithm implemented in Visaual Studio 2019,repairs point cloud holes by detecting hole boundaries,initializing grids,least squares grids,establishing implicit surfaces,and adjusting points to implicit surfaces.Experiments show that this method can fill the holes on the surface well,and the repair position remains smooth with the original area,which can be applied to the repair of indoor irregular objects,caves and tunnels.

关 键 词：点云数据 孔洞检测 孔洞修复 径向基函数 

分 类 号：O436[机械工程—光学工程]