RESEARCH ON THE MOBILE-TYPE 3D POINT CLOUD SCANNER FOR PUBLIC COORDINATES IN THE FIELD OF CIVIL ENGINEERING AND CONSTRUCTION

Abstract

In recent years, 3D point cloud surveying instruments such as Unmanned Aerial Vehicle and Terrestrial Laser Scanner have been widely used in the field of civil engineering and construction. However, the use of such surveying instruments is not widely used in the construction industry, especially for small-scale earthworks, due to their high operating costs. Under such circumstances, mobile terminals equipped with LiDAR have been released. and many applications that enable the acquisition of 3D point cloud data have been released. However, there are few applications that support public coordinates, which are necessary in the field of civil engineering and construction. Therefore, this paper aims to convert 3D point clouds with arbitrary coordinates into public coordinates with much greater ease than conventional methods. The goal was also to ensure that the results of converting the coordinates of surveyed point clouds of actual smallscale earthwork sites using the results of this research fall within the measurement accuracy specified by as-built management guidelines of the Ministry of Land, Infrastructure, Transport and Tourism.