Data completion in building information management: electrical lines from range scans and photographs

Abstract

Background: The concept of building information management (BIM) is based on its holistic nature. This idea pays off, if all relevant information is fused into one consistent data set. As a consequence, the completeness of data is vital and the research question on how to complete data automatically remains open. Methods: In this article we present a data completion technique based on knowledge management. We encode expert and domain knowledge in a generative system that represents norms and standards in a machine-readable manner. The implementation of this approach be used to automatically determine a hypothesis on the location of electrical lines within indoor range scans. Results: The generative paradigm can encode domain expert knowledge in a machine-readable way. In this article we demonstrate its usage to represent norms and standards. Conclusions: The benefit of our method is the further completion of digital building information models -a necessary step to take full advantage of building information modeling.

Suitability Assessment of Different Sensors to Detect Hidden Installations for as-Built Bim

“…Nevertheless, a BIM model consists of more than visually interpretable information, i.e., the installations hidden in the walls, such as electric lines or pipes. Krispel et al (2017) use a laser scanner and panorama images taken by a camera to first obtain a model of the building itself. In a second step, a hypothesis for the routing of the electric lines is generated based on the visible electrical objects such as sockets and light switches.…”

Automatic reconstruction of fully volumetric 3D building models from oriented point clouds

“…A prototypical approach has been presented by Brodie et al [37] who propose a cloud-based platform integrating tools for generating models from and val- idating models against point clouds. Krispel et al [38] developed a method for automatic detection of power sockets and for the generation of hypotheses for electrical lines based on automatically generated building models. An approach for integrating IFC BIM models and point cloud data in a common file format has been presented by Krijnen et al [39].…”