BASIC STUDY ON SURFACE ACQUISITION OF BRIDGE STRUCTURES FOR 3D MODEL GENERATION

Abstract

In recent years, the use of 3D models is expected in the maintenance and management of bridges, and the automatic generation of 3D models is considered to be beneficial. We conducted a basic investigation of a method for automatically extracting individual planar regions representing the surface of bridges from point clouds. In this study, planes which form the surface of the structure were extracted using an improved method of RANSAC, and the point clouds on each extracted plane were selected by DBSCAN. The intersections of the extracted planes were used to capture the edges of the structure, and the planar graph method was used to construct the surface of the structure.