Using Terrestrial Laser Scanning and Lidar Data for Photo-Realistic Visualisation of Climate Impacts at Heritage Sites

Abstract

ABSTRACT:Remote sensing technologies such as terrestrial laser scanning (TLS) and light detection and ranging (LIDAR) can now provide accurate spatial data for describing topographic patterns in landscapes and mapping the fine geometric detail of complex structures. Interdisciplinary studies using such data for characterising heritage sites are now widespread, but it is less common for data derived from these technologies to be used in an operational setting to 'engage' local people with the idea of future change. Threedimensional landscape models using TLS and LIDAR are a powerful way of communicating climate change to lay audiences on a local level and the use of multi-scale spatial data can help to show the anticipated impacts of climate change at heritage sites. The aim of this paper is to present the results of a project designed to produce a photorealistic geospatial model of the historic quayside at Cotehele Quay, Cornwall, UK. Our central aim was to generate a spatially accurate and visually realistic three-dimensional model of the site for use in local engagement strategies. TLS and LIDAR data were collected and processed to produce a three-dimensional model. The key image processing stages included: registration to a national co-ordinate system, meshing using 3D reshaper and visualisation creation in 3DS Max. The resulting model will permit spatial consideration of the impact of management strategies at the site. The over-arching application of this method beyond the study site will provide a platform for discussion that addresses the needs of site managers and the expectations of local communities. * ajn203@exeter.ac.uk

Beyond Heritage Science: A Review

“…Laser scanning and digital photogrammetry (in particular structure-from-motion photogrammetry) have emerged in the last couple of decades and are now commonly employed in contemporary building conservation [101][102][103][104][105]. Laser scanning and structurefrom-motion photogrammetry largely obviate the aforementioned hand-logged onsite dimensional survey.…”

Examining the utility of Simultaneous Localisation and Mapping (SLAM) LiDAR on a low-altitude unmanned aerial vehicle (UAV) across environments of various composition and dynamic complexity

“…This approach to co-registration is supported by the findings of Oniga et al[74] and Rajendra et al[75]. Following co-registration, both point clouds were exported for further interrogation in 3DR.Similar to the methods of Nettley et al[76] 3DR was employed to create mesh objects from the P40 reference data. To assess accuracy at the Site-level, the Keep the Two Parts tool was utilised in 3DR to isolate each target of interest within the P40 point cloud…”