激光点云数据离群点删除下的多视点场景虚拟重构  

Virtual Reconstruction of Multi View Scene with Outliers Deleted from Laser Point Cloud Data

作　　者：黄燕 薛丽香[2] HUANG Yan;XUE Lixiang(School of Information Engineering,Zhengzhou Technology and Business University,Zhengzhou He’nan 450000 China;School of Information Engineering,Zhengzhou Institute of Science and Technology,Zhengzhou He’nan 450000 China)

机构地区：[1]郑州工商学院信息工程学院,河南郑州450000 [2]郑州科技学院信息工程学院,河南郑州450000

出　　处：《电子器件》2024年第2期478-482,共5页Chinese Journal of Electron Devices

基　　金：河南省科技攻关项目(202000540002)。

摘　　要：单纯的激光扫描技术在现实场景虚拟重构时,有效点云数据过少,坐标均衡性较差,混乱坐标较多。为提高虚拟现实重构精度,设计基于激光点云离群点删除的多视点场景虚拟重构方法。提取多视点场景激光点云数据,包括激光数据角点特征提取,以及视觉数据角点特征提取。设置离群阈值,计算三维坐标轴中非离群点数据集所包含的空间长度,设置离群点坐标栅格结构。通过点激光云数据提取值,计算移除离群点前后点云数据之间的平均距离,完成无用数据移除,实现虚拟重构。实验结果可知:移除前后平均距离差距显著,可见离群点的移除对虚拟现实重构技术有明显作用;在使用所提方法得到的虚拟现实重构场景中,可以得到明显的房间轮廓,且大型物体重构影像也十分清晰。When pure laser scanning technology is used for virtual reconstruction of real scenes,there are too few effective point cloud data,poor coordinate balance and more chaotic coordinates.In order to improve the accuracy of virtual reality reconstruction,a multi view scene virtual reconstruction method based on laser point cloud outlier deletion is designed.Laser point cloud data of multi view scene are extracted,including corner feature extraction of laser data and corner feature extraction of visual data,the outlier threshold is set,the space length contained in the non outlier dataset in the 3D coordinate axis is calculated,and the outlier coordinate grid structure is set.The average distance between the point cloud data before and after the removal of outliers is calculated by extracting values from the point laser cloud data to complete the removal of useless data and realize virtual reconstruction.The experimental results show that the average distance difference before and after removal is significant,which shows that the removal of outliers has a significant effect on virtual reality reconstruction technology.In the virtual reality reconstruction scene obtained by using the proposed method,the obvious room contour can be obtained,and the reconstruction image of large objects is also very clear.

关 键 词：激光点云 机器视觉 多视点场景 虚拟现实重构技术 离群点 特征提取 

分 类 号：TN06[电子电信—物理电子学]