摘要
Abstract
With the continuous deepening of urbanization,the renovation of old cities has become an urgent problem in urban development,and accurate accounting of the workload of the building facade is the basis to ensure the smooth progress of the project.In the process of modernization of the old city,because most of the old buildings are old,the original design data are lack and difficult to collect,many buildings have been rebuilt many times,and the current situation can no longer match the design drawings.In these cases,it is necessary to survey and map the facade of the building in the field to obtain the elevation view of the current situation.The working efficiency of the traditional total station method of measuring the facade is low,and it is often affected by various external factors,which seriously affects the progress of the project.3D laser scanning technology can effectively solve the above problems by constructing high-precision 3D models of buildings based on point cloud data,thereby comprehensively improving the efficiency of building measurement.Based on this,this paper elaborates on the overview of 3D modeling technology,analyzes the problems in point cloud modeling,combines practical cases,collects relevant data resources,establishes a sound 3D model,automatically generates a complete building model,and provides strong support for relevant personnel's work.关键词
三维激光扫描技术/建筑物/三维建模/应用/点云数据Key words
3D laser scanning technology/building/3D modeling/application/point cloud data分类
天文与地球科学
