RT info:eu-repo/semantics/article T1 Towards the automatic 3D parametrization of non-planar surfaces from point clouds in HBIM applications A1 Román Cembranos, Javier A1 Martín Lerones, Pedro A1 Llamas Fernández, José María A1 Zalama Casanova, Eduardo A1 Gómez García-Bermejo, Jaime K1 Façade Parsing K1 Análisis de fachadas K1 Point Cloud K1 Nube de puntos K1 Cultural heritage K1 Patrimonio cultural K1 Feature detection K1 Detección de características K1 Non-planar surfaces K1 Superficies no planas AB 3D laser scanning and photogrammetric 3D reconstruction generate point clouds from which the geometry of BIM models can be created. However, a few methods do this automatically for concrete architectural elements, but in no case for the entirety of heritage assets. A novel procedure for the automatic recognition and parametrization of non-planar surfaces of heritage immovable assets is presented using point clouds as raw input data. The methodology is able to detect the most relevant architectural features in a point cloud and their interdependences through the analysis of the intersections of related elements. The non-planar surfaces detected, mainly cylinders, are studied in relation to the neighbouring planar surfaces present in the cloud so that the boundaries of both the planar and the non-planar surfaces are accurately defined. The procedure is applied to the emblematic Castle of Torrelobatón, located in Valladolid (Spain) to allow the cataloguing of required elements, as illustrative example of the European defensive architecture from the Middle age to the Renaissance period. Results and conclusions are reported to evaluate the performance of this approach. PB Copernicus Publications SN 1682-1750 YR 2019 FD 2019 LK http://uvadoc.uva.es/handle/10324/38604 UL http://uvadoc.uva.es/handle/10324/38604 LA eng NO The International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019, vol. XLII-2/W15. p. 1023–1030; 27th CIPA International Symposium “Documenting the past for a better future”, September 2019, Ávila, Spain NO Producción Científica DS UVaDOC RD 25-abr-2024