Register of Dry Stone Domes. Simplified Method for Point Clouds
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Register of Dry Stone Domes. Simplified Method for Point Clouds Cèlia Mallafrè Balsells1 · Josep Maria López Besora2 · Agustí Costa Jover1 · Sergio Coll Pla1 Accepted: 13 October 2020 © Kim Williams Books, Turin 2020
Abstract Dry-stone elements represent an important aspect of rural identity, and by nature, their constructive and volumetric elements have been eclipsed by their characteristics. Current massive data capture techniques, including photogrammetry, can offer new analysis procedures that will improve existing management and cataloguing methods. Such methods must address those characteristics that make it difficult to parametrize the formal features. This investigation focuses on a simplification of point clouds used to obtain formal and dimensional characteristics of specific elements. The management of the data obtained through a massive capture allows an analysis of elements both two- and three-dimensionally. The proposed procedure is tested in a dry-stone domed typology located in the northeastern of the Iberian Peninsula. Keywords Point cloud · Photogrammetry · Structure from motion · Dry stone
* Cèlia Mallafrè Balsells [email protected] Josep Maria López Besora [email protected] Agustí Costa Jover [email protected] Sergio Coll Pla [email protected] 1
Reus School of Architecture (ETSA), Rovira i Virgili University (URV), Avinguda Universitat, 1, 43204 Reus, Spain
2
Department of Computer Engineering and Mathematics, Rovira i Virgili University (URV), Carrer Marcellí Domingo, 1, 43007 Tarragona, Spain
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Introduction The aim of this study is to develop a method for parametrising different features from three-dimensional (3D) models. The original models are dry-stone buildings obtained through structure from motion photogrammetry (SFM). A methodology is then developed using a specific program to obtain the main features and postprocess the point cloud. Massive point capture data techniques are frequently used in cultural heritage studies (Pavlidis et al. 2007). Modelling and monitoring allow the analysis and protection of different heritage elements (Carnimeo et al. 2015; Foti et al. 2018). Such tools have many applications and are an important research topic (Barber et al. 2018). SFM is one of the most common techniques in this field owing to its ease of use and non-invasiveness (Guarnieri et al. 2004; Koutsoudis et al. 2014). There are many examples of its application in various disciplines. This technology has been used in archaeology to facilitate the reading of damaged inscriptions (Andreu and Serrano 2019), to study pictures on rock walls (Jalandoni et al. 2018), and in the 3D modelling and seismic analysis of archaeological sites (Forlin et al. 2018). From an architectural perspective, photogrammetry is used to determine structural damage through a service analysis (Galantucci and Fatiguso 2019). In recent studies, the elements and geometric resolution of point clouds have been evaluated both manually and automa
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