基于VirtuoZo的高原地区高精度DEM制作方法

摘要

DEM(Digital Elevation Model,数字高程模型)是国家基础测绘成果的主要成果之一.为获取高原地区高精度的DEM成果,云南省测绘地理信息局立项对高原地区高精度DEM制作进行研究.该文基于VirtuoZo全数字摄影测量系统,采用多类型地形数据对高原地区高精度DEM制作的方法进行了有益的探讨,并将研究成果成功应用于云南“万幅测图”计划和云南省第一次全国地理国情普查精细化DEM制作.不仅保证了DEM制作的精度,而且提高了制作DEM的作业效率.%DEM(Digital Elevation Model) is one of the main achievement of the national basic surveying and mapping achievements.In order to obtain the high precision DEM achievement in plateau area,administration of surveying、mapping and geoinformation of Yunnan province set a project to study the making method of high precision DEM in plateau area.In this paper,based on VirtuoZo all digital photogrammetry system,the method of high precision DEM production in plateau area is discussed with the method of multi type terrain data,and the study effect is used to "Million amplitude mapping" planning of Yunnan province and the fine DEM making in first time of national geographic census for Yunnan province successfully.This method not only ensures the accuracy of DEM making,but also improves the efficiency of DEM making.