An Efficient Pipeline to Obtain 3D Model for HBIM and Structural Analysis Purposes from 3D Point Clouds

Massimiliano Pepe,Domenica Costantino,Alfredo Restuccia Garofalo

doi:10.3390/app10041235

Massimiliano Pepe, Domenica Costantino + Show 1 more

Open Access

https://doi.org/10.3390/app10041235

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Journal: Applied Sciences	Publication Date: Feb 12, 2020
Citations: 82	License type: CC BY 4.0

Affiliation: Polytechnic University of Bari

Abstract

The aim of this work is to identify an efficient pipeline in order to build HBIM (heritage building information modelling) and create digital models to be used in structural analysis. To build accurate 3D models it is first necessary to perform a geomatics survey. This means performing a survey with active or passive sensors and, subsequently, accomplishing adequate post-processing of the data. In this way, it is possible to obtain a 3D point cloud of the structure under investigation. The next step, known as “scan-to-BIM (building information modelling)”, has led to the creation of an appropriate methodology that involved the use of Rhinoceros software and a few tools developed within this environment. Once the 3D model is obtained, the last step is the implementation of the structure in FEM (finite element method) and/or in HBIM software. In this paper, two case studies involving structures belonging to the cultural heritage (CH) environment are analysed: a historical church and a masonry bridge. In particular, for both case studies, the different phases were described involving the construction of the point cloud and, subsequently, the construction of a 3D model. This model is suitable both for structural analysis and for the parameterization of rheological and geometric information of each single element of the structure.

Highlights

Modern surveying technologies in cultural heritage (CH) offer new perspectives of application both as regards the acquisition of metric data and the representation or analysis of objects of historical and artistic interest [1]
The step, known as “scan-to-Building Information Modelling (BIM)”, has led to the creation of an appropriate methodology that involved the use of Rhinoceros software and a few tools developed within this environment
Once the 3D model is obtained, the last step is the implementation of the structure in FEM and/or in HBIM software

Summary

Introduction

Modern surveying technologies in cultural heritage (CH) offer new perspectives of application both as regards the acquisition of metric data and the representation or analysis of objects of historical and artistic interest [1] In this way, it is possible to obtain a digital representation of objects or structures belonging to the CH environment in terms of position, shape, geometry and description of each element. In the last few years, a very successful approach in the construction of 3D models has been that based on the structure from motion (SfM) and multi-view stereo (MVS) algorithms Using these approaches, a 3D model or 2D orthophotos can be obtained in a rapid and automatic way using photogrammetric software.

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