Combination of HBIM and UAV photogrammetry for modelling and documentation of forgotten heritage. Case study: Isabel II dam in N\xedjar (Almer\xeda, Spain)

Patricio Martínez-Carricondo,Lourdes Yero-Paneque,Francisco Agüera-Vega,Fernando Carvajal-Ramírez

doi:10.1186/s40494-021-00571-8

Patricio Martínez-Carricondo, Lourdes Yero-Paneque + Show 2 more

Open Access

https://doi.org/10.1186/s40494-021-00571-8

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Journal: Heritage Science	Publication Date: Aug 10, 2021
Citations: 20	License type: open-access

Affiliation: University of Havana, University of Almería

Abstract

The Isabel II dam is a monumental hydraulic structure built in the middle of the nineteenth century in Spain. In this study, unmanned aerial vehicle (UAV) photogrammetry was used as a data acquisition technique to carry out a survey of the dam’s current state and its surrounding constructions. The point cloud obtained by the photogrammetric process, together with the collected historical in-formation, served as the basis to generate an historic building information model (HBIM) that is the central core containing all the graphical, structural and archaeological information. The HBIM was validated by means of the As-Built for Autodesk Revit®-FARO® plug-in, and shows the high accuracy obtained with respect to the point cloud. The results show that with this methodology it is possible to obtain models representative of reality with an accuracy of ± 0.05 m. In addition, in order to improve the visualization, texture adjustments are made to obtain a photorealistic rendering of the model.

Highlights

In recent years, computer tools and resources have evolved to allow the production of three-dimensional (3D) models that have become great sources of data for the reconstruction of elements of forgotten heritage and their exhibition in museums [1,2,3,4,5]
The objective of this research is to document the cultural heritage related to the Isabel II Reservoir, in Níjar (Almería, Spain), that is, the body of the dam, the administration building, the control tower and part of the irrigation canals in a single historic building infor‐ mation model (HBIM), supported by the point cloud obtained by unmanned aerial vehicle (UAV) photogrammetry and contrasting the accuracy of the model using the As-Built for Autodesk Revit-FARO® plug-in
As per the methodology described in the previous section, all the characteristic elements were modelled from the point cloud, including the base topography of the surrounding terrain

Summary

Introduction

Computer tools and resources have evolved to allow the production of three-dimensional (3D) models that have become great sources of data for the reconstruction of elements of forgotten heritage and their exhibition in museums [1,2,3,4,5]. In 1985 UNESCO added virtual reconstruction to the list of procedures for the conservation and preservation of buildings of cultural interest, and in 2006 the London Charter established the principles of 3D visualisation in the field of research and dissemination of cultural heritage. Several software applications make it possible to obtain a 3D model based on point clouds from photographs taken by any conventional camera. This is thanks to special algorithms such as Structure-from-Motion (SfM) [10,11,12]. The SfM algorithm provides a point cloud representing the geometry of the object under study, the positions from which the photographs were taken and the orientation of each camera [13, 14]. SfM incorporates multi-view stereopsis techniques [15], which derive a 3D structure from overlapping photography acquired from multiple locations and angles [16] that have the scale-invariant feature transform (SIFT) operator for keypoint detection applied

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