Abstract
The use of massive data capture techniques in architectural heritage has enhanced the development of new methodologies that have an important impact on their conservation and understanding. The research proposes the study of formal anomalies in the cloister of the Cathedral of Tarragona (c. 12th century). It is a relevant Gothic construction in Catalonia, with the special singularity that part of its structure is raised over an important pre-existing Roman wall. The investigation is based on a point cloud obtained with a terrestrial laser scanner (TLS) and the systematization of the 3D analysis methodology of the point cloud through different reference shapes. In general terms, the construction is in good condition, so the discrepancies between real construction and the shapes of reference are small, with some exceptions. Nevertheless, the different approximations used allowed us to identify some relevant features, such as the variability of the form of rib vaults, and the influence of the criteria used in the definition and location of reference forms.
Highlights
Topographic surveying techniques have seen a great technological evolution in recent decades.The appearance of massive data capture techniques has raised countless applications in very diverse disciplines, such as geomorphology [1], volcanology [2], prototyping [3], construction materials [4], and cultural heritage [5], both architectural and archaeological
We find numerous works based on surveys carried out mainly with a terrestrial laser scanner (TLS) [6,7], digital photogrammetry [8,9], or a combination of both [10,11]
The precision of the point clouds that can be obtained allows the detailed study of the topography of the constructions
Summary
The appearance of massive data capture techniques has raised countless applications in very diverse disciplines, such as geomorphology [1], volcanology [2], prototyping [3], construction materials [4], and cultural heritage [5], both architectural and archaeological. The reliability and accuracy of these systems has been extensively tested and verified [12,13,14] These systems offer great advantages in the survey and study of historical buildings from an operational point of view (safe, contactless, non-invasive, fast, resources), due to the usual complexity of spaces and the irregular forms of construction elements. The precision of the point clouds that can be obtained allows the detailed study of the topography of the constructions
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