Semi-automatic scan-to-BIM procedure applied to architectural ornaments of Nossa Senhora do Rosário Church, Aracati-CE

Heritage constructions in general presents a complex geometry and shapes. The work of generating an accurate digital model of a historical building still a challenge. Heritage Building Information Modelling (HBIM) from point cloud data is a usual methodology to cultural heritage documentation. Scan-to-BIM summarize a workflow from point cloud survey to parametric BIM elements. This paper aims to develop a semi-automatic scan-to-BIM procedure for architectural ornaments of Nossa Senhora do Rosario Church, enhancing the geometrical accuracy of the model and reducing the time-consuming process. The workflow handles with point cloud capture of existing historical building, point cloud segmentation, initial mesh generation from point cloud, mesh improvement, HBIM parametric object creation in BIM environment, and validation of the procedure. The results from applications in three ornaments of the church and then from the validation of the methodology indicates that the scan-to-BIM procedure is useful for HBIM modelling.