无人机倾斜摄影技术在测绘工程中的实施与应用  

Implementation and Application of UAV Tilt Photography Technology in Surveying and Mapping Engineering

作　　者：林伟清 LIN Weiqing(Minwu Great Wall Construction and Development Co.,Ltd.,Fuzhou,Fujian Province,350000 China)

机构地区：[1]闽武长城建设发展有限公司,福建福州350000

出　　处：《科技资讯》2023年第24期136-138,共3页Science & Technology Information

摘　　要：近年来,随着我国经济的快速发展和城市化进程的加快,土地资源的需求量越来越大。传统测量手段无法满足需求,因此需要寻找新的方法进行测量。利用无人机倾斜摄影技术,通过无人机拍摄倾斜照片获取影像点云数据,并通过图像处理软件进行数据提取、分类及导入,完成地形图绘制任务。首先,介绍了无人机的基本原理以及其在测绘领域的应用现状。其次,详细阐述了无人机拍摄倾斜照片的基础知识,包括飞行器的运动轨迹、相机的安装位置、相机的参数设置等方面。再次,介绍了无人机拍摄倾斜照片后所产生的影像点云数据及其特点。最后以某小区为例进行了实地试验并分析了结果。主要成果包括:(1)提出了一种基于无人机拍摄倾斜照片获取影像点云数据的方法,具有成本低廉、效率高的特点;(2)根据不同类型的影像点云数据建立了相应的算法模型,实现了影像点云数据的提取、分类及导入等工作;(3)成功地将影像点云数据用于制备地形图,并且得到了较好的效果。In recent years,with the rapid development of China's economy and the acceleration of urbanization,the demand for land resources is increasing.However,traditional measurement methods cannot meet the demand,so new methods need to be found for measurement.Using the UAV tilt photography technology,this study obtains the point cloud data of images through tilt photos taken by UAVs,and extracts,classifies and imports data by image processing software to complete the task of topographic map drawing.First,this study introduces the basic principles of UAVs and their application status in the field of surveying and mapping.Then,it elaborates the basic knowledge of tilt photos taken by UAVs,including the motion trajectory of the aircraft,the installation position of the camera,the parameter setting of the camera,etc.Next,it introduces the point cloud data of images and their characteristics generated by tilt photos taken by UAVs.Finally,it conducts a field experiment with a certain community as an example and analyzes results.The main achievements of this study are as follows.(1)A method to obtain the point cloud data of images based on tilt photos taken by UAVs is proposed,which has the characteristics of low costs and high efficiency.(2)Corresponding algorithm models are established based on different types of the point cloud data of images,and the extraction,classification and importing of the point cloud data of images are realized.(3)The point cloud data of images is successfully used to prepare topographic maps,and good results are obtained.

关 键 词：无人机倾斜摄影 影像点云数据 测绘工程 地形图绘制 图像处理软件 

分 类 号：P231[天文地球—摄影测量与遥感]