测绘通报 ›› 2017, Vol. 0 ›› Issue (6): 90-93.doi: 10.13474/j.cnki.11-2246.2017.0197

• 技术交流 • 上一篇    下一篇

利用机载激光点云数据生产DEM的关键技术分析

蒋桂美, 聂倩, 陈小松   

  1. 宁波市测绘设计研究院, 浙江 宁波 315042
  • 收稿日期:2016-10-26 出版日期:2017-06-25 发布日期:2017-07-03
  • 作者简介:蒋桂美(1982-),女,工程师,研究方向为摄影测量与遥感、地理信息系统。E-mail:xiaomeijgm@126.com
  • 基金资助:
    宁波市科协资助项目(X201601-3)

Key Technologies Analysis of DEM Production Based on LiDAR Data

JIANG Guimei, NIE Qian, CHEN Xiaosong   

  1. Ningbo Institution of Surveying and Mapping, Ningbo 315042, China
  • Received:2016-10-26 Online:2017-06-25 Published:2017-07-03

摘要: 着重分析了利用机载激光点云数据提取DEM的关键技术:预处理、点云滤波与分类、高精度DEM制作与质量评价技术;建立了基于机载激光点云的DEM生产技术流程,并将其应用于宁波市地理国情普查市情专项——高精度地表模型制作项目中;构建了宁波市建成区规则格网1:2000比例尺的高精度DEM模型,为宁波市地理国情普查提供了数据基础。

关键词: 机载LiDAR, 激光点云, DEM

Abstract: The paper focuses on the analysis of the key steps of extracting DEM from airborne-LiDAR data, including point cloud data preprocessing, the data filtering and classification, high precision DEM manufacturing and quality evaluation. In this paper, the DEM production technology process based on airborne-LiDAR data is established, and will be used on a city situation special survey of geographical conditions:high precision surface modeling project in Ningbo. A high precision DEM model of 1:2000 scale rule grid of Ningbo built-up area is constructed which provides a data base for the survey of geographical conditions in Ningbo.

Key words: airborne-LiDAR, laser cloud points, DEM

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