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Publikācija: 3D Modelling of Existing Buildings from Laser Scanner Data

Publication Type Full-text conference paper published in other conference proceedings
Funding for basic activity Unknown
Defending: ,
Publication language English (en)
Title in original language 3D Modelling of Existing Buildings from Laser Scanner Data
Field of research 2. Engineering and technology
Sub-field of research 2.1. Construction and transportation engineering
Authors Modris Dobelis
Māris Kaļinka
Anatolijs Borodiņecs
Keywords 3D Model, BIM, CAD, 3D Laser Scanning, Energy Analysis
Abstract The growing attention to improve the building’s thermal performance has initiated an increasing demand of innovative remodeling solutions for existing houses. This modeling problem is being studied in a large multi-partner project called MORE-CONNECT [1] that aims to industrialize building renovation in order to reduce energy consumption. Advancements in contemporary CAD and CNC manufacturing technologies allow the use of modular prefabricated insulated wood frame panels for this purpose as one of the possible solutions. More and more widely used Building Information Modelling (BIM) concept with its’ parametric modelling capabilities allows to assess the outcomes of the results of preliminary building energy performance analysis and later coordinate these complex and time consuming processes much easier, faster, and cheaper. As one of the key components in the solution of this problem is fast and precise acquisition of geometry of the building. This research was aimed towards reconstruction of BIM compatible 3D geometric model from laser scanned data that captures the building’s external envelope with main openings. The pre-sent research focuses on the capture of building 3D data in a BIM compatible format, which later may be used for both an energy analysis and a structural design of insulation systems. A raw laser scan data captured at the building site was later post-processed with dedicated software to comply with import options for BIM software. Using a point cloud data as a reference a 3D geometry of the building was traced. Manual, semi-automatic or automatic tracing processes may be used to capture the external envelope of the building with openings. Major developers of BIM software, applicable for these tasks are Autodesk, Graphisoft, Bentley, Nemetscheck, etc. The products of first two companies which are dominating in the local industry were tested in a pilot study. BIM compatible as-built 3D models were created from the scanned data for two-story ~300 m2 residential building to validate the proposed processes. A general workflow in both cases is very similar with minor variations depending on a particular software performance. The paper reviews the existing methodologies used for these purposes, describes an approach used in the present study, and the assessment of the results obtained, including some practical recommendations.
Hyperlink: https://digi.lib.ttu.ee/i/?7673 
Reference Dobelis, M., Kaļinka, M., Borodiņecs, A. 3D Modelling of Existing Buildings from Laser Scanner Data. In: Engineering Graphics BALTGRAF-14: Proceedings of the Fourteenth International Conference, Estonia, Tallinn, 1-2 June, 2017. Tallinn: Tallinn University of Technology, 2017, pp.10-14.
ID 25390