Key Technologies Analysis of DEM Production Based on LiDAR Data

doi:10.13474/j.cnki.11-2246.2017.0197

Abstract

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

CLC Number:

JIANG Guimei, NIE Qian, CHEN Xiaosong. Key Technologies Analysis of DEM Production Based on LiDAR Data[J]. 测绘通报, 2017, 0(6): 90-93.

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