架空输电线路机载激光雷达点云电力线三维重建

发布时间：2018-01-22 04:51

本文关键词： 机载激光雷达电力巡线电力线三维重建悬链线抛物线　出处：《测绘学报》2016年03期 　论文类型：期刊论文

【摘要】：电力线三维重建是机载激光雷达(LiDAR)电力巡线的一项重要任务之一。本文提出了一种基于架空输电线走廊机载LiDAR点云的电力线三维重建方法。首先,基于电塔LiDAR点和初始线路轨迹数据提取精确的电塔位置、电塔数量、线路轨迹、总档数等信息;然后,将线路分档,并确定每一档的二维空间范围和相应的电力线LiDAR点云;接着,分别对每一档的电力线LiDAR点云进行中心化投影,并利用k-means聚类将每一个电力线LiDAR点划分到相应的根;最后,利用直线和抛物线相结合的模型进行单档单根电力导线三维重建。两景试验表明,本文方法可以实现自动、高精度、正确的重建长距离架空输电线走廊电力线三维模型,重建过程中具有对电力线数目、空间配置结构、类型、粗差点、档距长度、点云不规则断裂等因素不敏感的优势。
[Abstract]:Power Line 3D Reconstruction is Airborne Lidar LiDAR). This paper presents a 3D power line reconstruction method based on airborne LiDAR point cloud in overhead transmission line corridor. Based on the data of the LiDAR point and the initial track of the electric tower, the accurate information of the position, the number of the electric tower, the track of the line, the total number of files and so on are extracted. Then, the line is divided, and the two-dimensional spatial range of each file and the corresponding power line LiDAR point cloud are determined. Then, the power line LiDAR point cloud of each file is projected centrally, and each power line LiDAR point is divided into the corresponding roots by k-means clustering. Finally, using the model of combining straight line and parabola, the 3D reconstruction of single power wire is carried out. Two scene experiments show that this method can realize automatic and high precision. Correct reconstruction of long distance overhead transmission line corridor power line 3D model, the reconstruction process has the power line number, spatial configuration structure, type, rough handicap, distance length. Point cloud irregular fracture and other factors insensitive advantages.
【作者单位】：中国测绘科学研究院;
【基金】：国家自然科学基金(41371405) 国家测绘地理信息局基础测绘项目(A1506)~~
【分类号】：TM75;TN958.98
【正文快照】： 架空输电线路是一项重要的国家基础设施。电网运营维护管理部门需要对架空输电线路进行周期性的电力巡线以防止和杜绝电网安全事故的发生[1]。人工巡线劳动力强度大、工作条件艰苦、效率低、复巡周期长、巡检数据准确率不高[2];直升机电力巡线是目前电力巡线的主要手段。近年

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