摘要
建筑内部噪声点云由于不同风格的家具及遮挡问题,分布规律比较复杂且通常与建筑立面粘连,难以通过交互的方式去除。针对这一问题,本文提出了一种建筑内噪声去除的扫描光线截断法。该方法首先分割建筑面片;然后将扫描中心点与点云组成的扫描光线与建筑立面求交;最后通过比较扫描光线的长度和扫描中心点与交点的距离,利用建筑立面截断扫描光线,从而在保持原始采样间隔的情况下自动去除建筑内部噪声点云。试验结果表明,该方法能较好地去除建筑内部的噪声点。
Due to different styles of furniture and occlusion, the distribution of noise point cloud inside buildings is more complex and adhesion with building facade, which make it difficult to be removed by interactive way. In order to solve this problem, a scanning ray truncation method is proposed in this paper. Firstly, the building surface is segmented, and then the intersection between the scanning ray composed of the scanning center point and the point cloud and the building facade is obtained. By comparing the length of the scanning ray with the distance between the scanning center point and the intersection point, the scanning ray can be cut off by the building facade, so as to remove the interior noise point cloud automatically while maintaining the original sampling interval. The experimental results show that the proposed method can effectively remove the interior noise points.
作者
王果
李峰
陈超
蔡庆空
杨亚伦
WANG Guo;LI Feng;CHEN Chao;CAI Qingkong;YANG Yalun(Institute of Civil Engineering,Henan University of Engineering,Zhengzhou 451191,China;Surveying and Land Information Engineering College,Henan Polytechnic University,Jiaozuo 454000,China;Department of Disaster Prevention Engineering,Institute of Disaster Prevention,Sanhe 065201,China)
出处
《测绘通报》
CSCD
北大核心
2021年第9期28-31,共4页
Bulletin of Surveying and Mapping
基金
河南省科技攻关计划项目(202102310333)
河南省重点研发与推广专项(182102310001,192102310001)
河南省高等学校重点科研项目(18B170003)
河南工程学院博士基金(D2015040)。
关键词
地面激光扫描
建筑内部
建筑立面
扫描光线截断法
噪声点云
ground laser scanning
interior of building
building fa9ade
scanning ray truncation
noise point cloud
