测绘通报 ›› 2021, Vol. 0 ›› Issue (7): 74-80.doi: 10.13474/j.cnki.11-2246.2021.0212

• 学术研究 • 上一篇    下一篇

基于线特征的鱼眼图像与地面激光雷达点云配准

熊友谊1, 乔纪纲2, 张文金1   

  1. 1. 广州欧科信息技术股份有限公司, 广东 广州 510663;
    2. 广东财经大学地理与旅游学院, 广东 广州 510320
  • 收稿日期:2020-09-03 出版日期:2021-07-25 发布日期:2021-08-04
  • 通讯作者: 乔纪纲。E-mail:qjg821@163.com
  • 作者简介:熊友谊(1971-),男,博士,高级工程师,主要从事三维地理信息系统、激光扫描技术与全景影像技术的研究。E-mail:xiongyy@okaygis.com
  • 基金资助:
    广东省科技计划(2019B010151001);广州市科技计划(201604010125)

Registration of fisheyes panoramic image and terrestrial LiDAR date based on line feature

XIONG Youyi1, QIAO Jigang2, ZHANG Wenjin1   

  1. 1. Guangzhou Ouke Information Technology Corporation, Guangzhou 510663, China;
    2. School of Geography and Tourism, Guangdong University of Finance and Economics, Guangzhou 510320, China
  • Received:2020-09-03 Online:2021-07-25 Published:2021-08-04

摘要: 地面激光扫描数据(LiDAR)与全景图像进行联合分析在虚拟场景建设、文化遗迹保护等方面有较高的应用价值。将全景图像在其视点与LiDAR点云对齐是开展两种数据联合分析的基础,但需要克服数据维度差异转换和特征匹配的困难。本文提出了基于线特征的半自动配准方法纠正图像,将鱼眼图像和LiDAR点云投影为透视成像的柱面全景图像,采用Hough变换提取图像直线特征,并利用修正迭代Hough变换方法,实现在鱼眼全景图像视点约束下与离散激光点云的三维对齐。试验表明,该方法能在较少的人工干预下实现二维到三维数据对齐。

关键词: 鱼眼图像, LiDAR, 线特征, MIHT, 配准

Abstract: Combining terrestrial laser point cloud and fisheye image are high efficiency on panoramic information analysis. Registration of fisheyes panoramic image and terrestrial LiDAR data is a prerequistite for its information complement each other. But it is necessary to overcome the difficulties of data dimensional difference transformation and feature matching. In this paper, a new semi-automatic method is brought up to registered these two data based on Hough algorithm, both fisheyes image and LiDAR points are reprojected to a same cylindrical surface. Line features are extracted from these two images based on Hough algorithm. And then, the modified Iterated Hough transform is employed to registered LiDAR range image and fisheye cylindrical surface image. Experimentation shows that the model has capability to register these two data in 3D screen with less manual intervention, and obtain high register precision within the area near fisheyes image viewing point.

Key words: fisheyes image, LiDAR, line feature, MIHT, registration

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