3d Mapping of Cultural Heritage: Special Problems and Best Practices in Extreme Case-Studies

Abstract

Photogrammetrey has a long successful history in the area of 3D modelling and documentation of cultural heritage monuments. In some cases an extensive study, preparation and the application of novel solutions is required for the successful documentation and 3D modelling of monuments. In most of the cases the problem that we have to face is difficulties regarding accessing, photographing, and measuring the monument from the optimal distance, in combination with the need for a high spatial resolution mapping. This paper is highlighting the special problems and the novel solutions, performed during mapping of two significant cultural heritage monuments in Greece. The Roussanou monastery (1527-1529 A.C., Meteora, Center Greece) and its underlying rock, had to be photographed and measured from a far distance and measured with various spatial resolutions. In the lakeside Neolithic settlement of Dispilio (6.000 B.C., western Greece) the enclosure which is covered with vegetation above a height of 3m, had to be measured with high spatial resolution. The combined use of a laser scanner, a digital camera equipped with a telephoto lens and UAV allowed the successful mapping and the production of orthophotomaps in each case.

Hybrid physics‐based modeling and data‐driven method for diagnostics of masonry structures

“…For this work, we consider the point cloud P representing the surface of the damaged structure to be an input. P can be obtained by a variety of well‐established methods that are described elsewhere (Barsanti, Remondino, Fenández‐Palacios, & Visintini, 2014; Napolitano & Glisic, 2018; Patias et al., 2013). Commonly, when damage assessments are done, different damages are not separated out and attributed to individual causes (Binda, Gambarotta, Lagomarsino, & Modena, 1999; Napolitano, Hess, & Glisic, 2019b).…”

Investigating the past using remote sensing techniques

“…UAVs can be used as a precise, automated and computercontrolled data acquisition and measurement platform, as a result of low-cost sensors such as off-the-shelf digital cameras, GPS/INS (Global Positioning System / Inertial Navigation System) based stabilization and navigation units [9]. In the cultural heritage area UAV applications are mainly focused on documentation, observation, monitoring, mapping, 3D modelling and 3D reconstruction [10] as well as digital maps, digital orthophoto, digital elevation model (DEM) and digital surface models (DSM) [11]. UAV aerial imagery in combination with photogrammetry are emerging technologies providing an innovative approach to 3D documentation of cultural heritage [9].…”

Digital Documentation of Industrial Heritage at Risk: The Case of Palataki and the Old Mining Complex at Limenaria of Thassos (Greece)

“…Nowadays, technology has radically changed matters in documentation and promises to continue to bring more changes rapidly (Lerma et al 2008). In contrast to other available techniques of documentation such as nonphotographic (graphic documentation, hand measuring and tachometry) and photographic (photography, rectified photography, computer-rectified photography, photogrammetry) techniques, 3d laser scanning represents today the most advanced technology available for measuring and documenting objects, structures and landscapes (Patias et al 2008(Patias et al , 2013. 3d laser scanners produce a huge number of 3d points and the resulting three dimensional color point cloud can be used to extract CAD elements or to create a 3d surface model (Remondino 2011).…”