Capítulos (Expresión Gráfica e Ingeniería en la Edificación)
URI permanente para esta colecciónhttps://hdl.handle.net/11441/11318
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Examinando Capítulos (Expresión Gráfica e Ingeniería en la Edificación) por Agencia financiadora "European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER)"
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Capítulo de Libro Investigating the use of 3D laser scanning to detect damaged features in heritage buildings(Elsevier, 2024) Antón García, Daniel; Amaro Mellado, José Lázaro; Al-Habaibeh, Amin; Universidad de Sevilla. Departamento de Expresión Gráfica Arquitectónica; Universidad de Sevilla. Departamento de Ingeniería Gráfica; Tejedor Herrán, Blanca; Bienvenido Huertas, José David; Universidad de Sevilla; European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER); Universidad de Sevilla. TEP970: Innovación Tecnológica, Sistemas de Modelado 3d y Diagnosis Energética en Patrimonio y EdificaciónTerrestrial laser scanning (TLS) is becoming increasingly important in the cultural heritage field given the need for virtual records of buildings and detecting surface wear and deterioration. Scientific research has shown that exhaustive 3D modeling from point clouds enables accurate analysis of heritage buildings and sites. However, factors such as the number and location of scanning stations, distance to objects, point of view, and resolution impact the scanning and modeling accuracies. Through the case study of a 19th-century Anglican masonry church in Nottingham (United Kingdom), this chapter investigates the accuracy of TLS surveying features to model surface deficiencies in heritage buildings. The results showed that combining different points of view and distances can enhance accuracy, but the joint accuracy is still lower than that of the less unfavorable station. The research also determined the suitable meshing smoothening for damage modeling and analyzed the point cloud discretization distortion for accuracy analysis.Capítulo de Libro Laser scanning intensity fingerprint: 3D visualisation and analysis of building surface deficiencies(Springer, 2022) Antón García, Daniel; Carretero-Ayuso, Manuel Jesús; Moyano, Juan; Nieto Julián, Juan Enrique; Universidad de Sevilla. Departamento de Expresión Gráfica e Ingeniería en la Edificación; Bienvenido Huertas, José David; Moyano, Juan; European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER); Universidad de Sevilla. TEP970: Innovación Tecnológica, Sistemas de Modelado 3d y Diagnosis Energética en Patrimonio y EdificaciónTerrestrial laser scanning (TLS) is a widely used technology in numerous sectors since it enables the recording of both geometric data and colour information of the objects. Moreover, this remote sensing technique allows for producing point clouds enhanced with the reflection intensity of the laser beam. Scientific research has used those data to detect and assess building surface deficiencies. However, the laser scanning intensity fingerprint of a building pathology is yet to be addressed. Thus, this research quantitatively analyses the distribution of point cloud intensities throughout the object geometry to show changes against the general context of the building component surface. This intensity fingerprint reveals the extent of the pathology, which leads to filtering the point cloud by those intensity values to extract and calculate the surface defect. On this basis, TLS is proven to be useful to record, detect, characterise, and examine specific building surface deficiencies and carry out the conservation status analysis of the assets surveyed. The case studies in this chapter are heritage buildings with clear surface pathologies. However, given the relationship between the building surface deficiencies and the point cloud data intensities, this research can also be applied to detect anomalies in modern buildings and constructions.