测绘通报 ›› 2022, Vol. 0 ›› Issue (6): 32-39.doi: 10.13474/j.cnki.11-2246.2022.0167.

• 学术研究 • 上一篇    下一篇

异形建筑的无人机点云与地面三维激光扫描点云配准

经皓然, 徐敬海   

  1. 南京工业大学测绘科学与技术学院, 江苏 南京 211816
  • 收稿日期:2021-09-03 发布日期:2022-06-30
  • 通讯作者: 徐敬海。E-mail:xu_jing_hai@163.com
  • 作者简介:经皓然(1996-),男,硕士生,主要从事地面三维激光和倾斜摄影测量研究。E-mail:847069765@qq.com
  • 基金资助:
    国家重点研发计划(2018YFC0704300)

Registration of unmanned aerial vehicle point clouds and terrestrial 3D laser scanner point clouds for irregular buildings

JING Haoran, XU Jinghai   

  1. College of Geomatics Science and Technology, Nanjing Tech University, Nanjing 211816, China
  • Received:2021-09-03 Published:2022-06-30

摘要: 高耸的异形建筑适合用三维激光扫描仪进行测量建模。但在实际运用中,地面三维激光扫描仪因视角受限,会导致点云模型缺失。而无人机倾斜摄影点云虽较为完整,但底部较差且精度较低。将两种点云模型进行配准,可完善单一点云模型的不足。但两者配准的难点为两种点云模型的精度、密度、尺寸的差别和两种坐标系存在任意角度的偏差。针对这一难点,本文论述了点云配准的流程,介绍了两种点云的配准参数及计算方法,选择两种点云的重叠部分进行高精度同名区域的划分,在同名区域中选取同名特征点对同名区域进行配准。选取某异形建筑天宝阁进行试验,对比分析了本文方法,验证了本文方法的有效性。

关键词: 地面三维激光扫描仪, 倾斜摄影, 点云, 配准, 异形建筑

Abstract: For towering irregular buildings, terrestrial 3D laser scanner are suitable for measurement and modeling. In practical applications, the terrestrial laser scanner is limited by the viewing angle, which will lead to the lack of point cloud models. Although the point cloud of UAV oblique photography is relatively complete, the bottom is poor and the accuracy is low. The two kinds of point cloud models are registered can perfect a single point cloud model. The difficulty of the registration is that the accuracy, density, coordinate systems and size of the two kinds of point cloud models are different, and they have a large angular deviation. For this difficulty, this paper discusses the registration process, introduces the registration parameters and calculation methods of the two kinds of point clouds, and selects the overlapping part of the two kinds of point clouds to divide the high-precision pieces, and selects the corresponding feature points to register the high-precision pieces. An irregular building, Tianbao Pavilion, is selected for experiments, and the proposed method is compared and analyzed to verify the effectiveness of the method in this paper.

Key words: terrestrial 3D laser scanner, oblique photography, point clouds, registration, irregular buildings

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