A METHOD FOR COMPUTING SIMPLIFIED 3D MODELS FROM BIM DATA FOR URBAN PLANNING

Abstract

 This paper presents a method for computing simplified VR models from BIM models for urban planning. Given a polygonal mesh extracted from BIM data, our method computes a simplified shape by extrusion of the outermost contours of the cross-sections of the mesh. This enables us to remove unnecessary faces in the BIM model and the number of faces can be reduced. Detail textures are computed from the original data. In this paper, we applied the method to several BIM data and confirmed over 50% of polygons were reduced by using our method.