Abstract
Abstract. This paper deals with 3D morphological studies of architecture surveyed with TLS to allow the modelling of a Renaissance villa in a BIM environment; the aim is to create Renaissance objects to be shaped into a parametric software and made recognizable in a BIM environment balancing level of accuracy and shortness of workflow. The approach of this study lies in the comparison of different workflows, using different BIM software and apps, useful to extract transverse ridge or primitive ribs from the point cloud of walls as vaulted ceilings, shape accurate objects, considering their level of detail and their morphological and typological aspect. The first steps of Data Processing from 3D Survey started with an accurate cleaning and transformation in appropriate but different format to be analysed into different environment and treated for a modelling phase. The different results of the different workflow have been compared to measure grade of simplification, when existent, of the single objects compared. The case study deepens the entrance of a Renaissance Villa in Tuscany, Villa di Poggio a Caiano, in its main elevation considering the vaults of porches and entrances as barrel vaults or lunette-like with double-curved nails.
Highlights
Awareness of the benefit of BIM modelling is a fact as the benefit of 3D digital technologies for survey in the heritage field (Fassi et al, 2016)
Working in a BIM environment often requires a pipeline with different tracks mainly manually managed and measured as extraction from the point cloud; this path generally starts from the shaping of the line by the operator after slice extraction from the point cloud, horizontal, vertical or both in a dense mixture to define the morphology of the shape (Banfi, 2016)
This paper proposes different workflows where the point cloud of a Renaissance Villa with some spaces enriched with vaulted ceilings is managed from the 3D survey to the creation of generative elements like lines, nurbs, and mesh; to do so different authoring software are compared to obtain manually or with a semi-automated workflow shape, nurbs and objects to be integrated with parametric applications in different BIM environments
Summary
Awareness of the benefit of BIM modelling is a fact as the benefit of 3D digital technologies for survey in the heritage field (Fassi et al, 2016). Working in a BIM environment often requires a pipeline with different tracks mainly manually managed and measured as extraction from the point cloud; this path generally starts from the shaping of the line by the operator after slice extraction from the point cloud, horizontal, vertical or both in a dense mixture to define the morphology of the shape (Banfi, 2016). Working in a BIM environment can involve volume subtraction directly in the modeler to define surface complexity, or mass modelling (Bowles, 2013) Beside this path geometrical algorithms have reached a specific capability to portray complexity of surfaces, leaving sets of information related to the object and interoperability problems to be solved in a second time
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