大区域实景三维数据处理与DEM制作探究  

Research on Realistic 3D Data Processing and DEM Production in Large Areas

作　　者：孙洪蕾 孙晓丽 SUN Honglei;SUN Xiaoli(Shandong Yunhong Big Data Technology Co.,Ltd.,Jinan 250101,China;Shandong Zhengyuan Digital City Construction Co.,Ltd.,Yantai 264000,China)

机构地区：[1]山东云虹大数据科技有限公司,山东济南250101 [2]山东正元数字城市建设有限公司,山东烟台264000

出　　处：《测绘与空间地理信息》2025年第2期188-190,194,共4页Geomatics & Spatial Information Technology

摘　　要：以开发阿勒泰实景三维管理系统与共享平台为例,讨论大区域实景三维平台建设中基础数据构建的关键技术及方法,探索基于无人机倾斜摄影技术下高效重建大区域城市三维模型的技术方法,比较分析倾斜影像密集匹配点云与LiDAR点云的特点,研究采用TerraSolid软件基于不规则三角网加密法对影像匹配点云数据进行点云滤波并进一步分类检查来获取地面点数据生成DEM的方法。该方法为构建实景三维管理系统与平台提供了有力的数据支撑,为实景三维城市建设提供思路框架,具有参考价值。数据来源广泛,获取便捷,提高了三维数据生产的效率和效果,对于项目的成本控制也有很大的帮助。Taking the development of Altay realistic 3D management system and sharing platform as an example,the key technologies and methods of basic data construction in the construction of large area realistic 3D platform are discussed.This paper explores the technical method of efficient reconstruction of urban three-dimensional model of large aera based on UAV oblique photography technology,and compares and analyzes the characteristics of dense matching point clouds of oblique images and LiDAR point cloud.This paper studies the method of using TerraSolid software to filter the point cloud data of image matching based on the method of Progressive TIN Densification and further classify the data to obtain the ground point data and generate DEM.This method provides sufficient data support for the construction of realistic 3D management system and platform and a frame of ideas for the construction of realistic 3D city.It has reference value,a wide range of data sources,and easy access,which improves the efficiency and effectiveness of 3D data production and greatly helps with project cost control.

关 键 词：实景三维 影像匹配点云 点云滤波 DEM TerraSolid 

分 类 号：P231[天文地球—摄影测量与遥感]