3D survey techniques for the conservation and the enhancement of a Venetian historical architecture

Analysis of the Photogrammetric Use of 360-Degree Cameras in Complex Heritage-Related Scenes: Case of the Necropolis of Qubbet el-Hawa (Aswan Egypt)

“…In these cases, the efficiency of data acquisition is one of the main aspects to be considered due to the difficulties in obtaining a complete coverage of the object by geomatic techniques that involve a large number of photographs (in the case of pinhole cameras) or scanning stations (in the case of using TLS). More specifically, in the case of photogrammetry, the number of photographs required to cover a complex scene can be reduced by using lenses that provide a larger Field of View (FoV), such as those using wide angle lenses [23][24][25][26][27], fisheye lenses [28][29][30][31][32][33][34][35][36][37][38] and 360-degree cameras [34,[39][40][41][42][43][44][45][46]. In this context, spherical photogrammetry [47] has undergone a great development recently using both fisheye images (FEI) and spherical images (SI), which are also known as panoramic images [47][48][49][50][51][52].…”

“…In addition, the overlapping allows obtaining other relevant information such as depth maps because each point of the scene is captured from several points of view. At the moment, spherical photogrammetry has been applied in several studies, achieving accuracies of various centimeters [44,46,[54][55][56][57][58]. Recently, the use of these sensors has been increasing due to their inclusion in MMS based on visual SLAM [59][60][61].…”

Multi-Sensor Geomatic Techniques for the 3D Documentation and Virtual Repositioning of Elements of the Church of S. Miguel (Jaén, Spain)

“…For this Heritage 2024, 7 2925 reason, some studies have recently focused on the improvement of this efficiency. Thus, some approaches have shown reductions in data acquisition work by increasing the field of view (FoV) of sensors, for example, in photogrammetry, through the use of wide-angle lenses [10][11][12][13][14], fisheye lenses [15][16][17][18][19][20][21][22][23][24], and 360-degree cameras [9,[25][26][27][28][29][30][31][32]. The recent use of fisheye images and panoramic images has made it possible to develop photogrammetric studies in complex scenes that had been almost impossible using conventional images.…”

Modelling the Evolution of the Archaeological Works Developed in Qubbet El-Hawa (Aswan, Egypt)

“…In addition, the presence of narrow spaces or occlusions could increase the quantity of photographs needed to cover the structure using normal focal lenses mounted in non-metric cameras. So some alternative procedures, such as the use of wide angle lens (Gómez-Lahoz, González-Aguilera, 2009;Mozas et al, 2012;Martínez et al, 2013;Fiorillo et al, 2016), fisheye lens (Boulianne et al, 1997;Kedzierski, Waczykowski, 2007;Georgantas et al, 2012;Covas et al, 2015;Perfetti et al 2017;Barazzetti et al, 2017b) and 360 degrees cameras (Pérez-Ramos, Robleda-Prieto, 2016;Kossieris et al, 2017;Mandelli et al, 2017;Barazzetti et al, 2017a;Fangi et al, 2018;Cantatore et al 2020;Bertellini et al, 2019) were implemented in order to reduce the quantity of images needed to cover the object. The use of Remotely Piloted Aircraft Systems (RPAS) (Colomina, Molina, 2014;Nex, Remondino, 2014;Campana, 2017) and masts (Georgopoulos, 1999;Mozas-Calvache et al, 2012;Martínez et al 2013;Ortiz et al, 2013;Blockley, Morandi, 2015;Martínez et al, 2015;Pérez et al, 2019;Mozas-Calvache et al, 2019) to lift cameras supposes a useful alternative to photographs acquired from the ground because of the improvement of the coverage of the object (usually on the terrain) and the reduction of the occlusions (e.g.…”