Abstract
Abstract. The contribution deals with the comparison of two laser scanners manufactured by Leica company. In BIM modelling, there is a need for fast and accurate gathering of spatial data, e.g. point clouds. Those data can be gathered by photogrammetry or laser scanning. Last years on the market, there occurred some light and easy-to-use alternatives to classic laser scanners. There were chosen two scanners that belong to the easy-to-use category. The first scanner is stationary Leica BLK360 and the second scanner is Leica BLK2GO which is a handheld scanner based on SLAM technology. Both laser scanners were tested on three different test objects. The first object is an administrative building, the second object is a historical administrative building and the third object is the vaults of the church. In all cases, only the indoor side of the objects was measured. The point clouds were compared to each other and the comparison was discussed. The parameters derived from the point clouds were also compared to the parameters read in the original documentation of the object. The comparison of the parameters may show, how those point clouds are usable for the final BIM modelling.
Highlights
Building information modelling (BIM) is a work process that is already implemented in many construction and facility management projects
The point cloud is possible to import to the CAD software with BIM modelling support where it is possible to create a 3D model which can be enriched by the descriptive information
The point cloud from Leica BLK2GO was supposed to be compared to the point cloud from Leica BLK360, so the point cloud was subsampled to a resolution of 1 point per ca. 4 mm2
Summary
Building information modelling (BIM) is a work process that is already implemented in many construction and facility management projects. The laser scanning process is usually carried out using modern laser scanners which have the ability to capture a lot of spatial data in a short time and create the point cloud. The point cloud is possible to import to the CAD software with BIM modelling support where it is possible to create a 3D model which can be enriched by the descriptive information. The aim of this contribution is to present a comparison of different easy-to-use laser scanners produced by a single manufacturer on different case studies. This contribution tries to bring an answer if the faster laser scanner Leica BLK2GO is comparable to Leica BLK360 in terms of accuracy
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