Processing of Terrestrial Laser Scanning Point Cloud Data for Computational Modelling of Building Facades

Abstract

Abstract:With the rapidly increasing availability of laser scanning data and the growing pressure to use it as the basis for computational models, there has been heighten interest in quickly, costeffectively, and accurately processing the resulting point cloud data sets so that they are compatible for importation into computational models. This paper presents traditional strategies for solid model generation and examines in detail innovations and continuing limitations of recent patents, newly published research, and some currently available commercial programs for the transformation of laser scanning point cloud data into solid models appropriate for finite element method meshing and various meshing strategies particularly well-suited for point cloud data.

Methods of laser scanning point clouds integration in precise 3D building modelling

“…image data. Models can be also generated using video or TLS data [13][14][15][16]. However, combining TLS and ALS data is more effective in 3D city modelling than using only one of laser scanning data type.…”

Detection of structural faults in piers of masonry arch bridges through automated processing of laser scanning data

“…Among them, Cabaleiro et al proposed an algorithm for the torsion analysis of a metal beam from LiDAR data. Terrestrial laser scanner was also used to detect cracks in facades, as well as in Hinks et al, where an automated method to process point clouds and to make structural calculations is proposed. Some authors also highlight the importance of using LiDAR for existing bridge structural analysis .…”

Combining an Angle Criterion with Voxelization and the Flying Voxel Method in Reconstructing Building Models from LiDAR Data

“…Many methods have been developed to extract geometries from LiDAR data (both airborne and terrestrial) and photogrammetry, but most concentrate on reconstructing models for visualization. To date, the conversion of these models for computational analysis has required significant manual intervention to obtain high geometric accuracy (Laefer et al, 2011a). With Aerial Laser Scanning (ALS) data, city scale, polyhedral building models are typically generated from boundaries of roof segments (Dorninger and Pfeifer, 2008; Elberink, 2009; Zhou and Neumann, 2009).…”

“…A good approach proposed by Pu and Vosselman (2009) involves segmenting potential façade features (e.g., windows, doors) and the subsequent fitting of polygons. Many alternative approaches are based on façade grammars (Becker and Haala, 2007, 2009; Hohmann et al, 2009; Wonka et al, 2003); see Laefer et al (2011a,b) for an extensive review of related literature and commercial applications for terrestrial and aerial options, respectively.…”