Publications / 2017 Proceedings of the 34rd ISARC, Taipei, Taiwan

Construction Inspection through Spatial Database

Ahmad Hasan, Ashraf Qadir, Ian Nordeng and Jeremiah Neubert
Pages 840-847 (2017 Proceedings of the 34rd ISARC, Taipei, Taiwan, ISBN 978-80-263-1371-7, ISSN 2413-5844)

This paper presents a novel pipeline for development of an efficient set of tools for extracting information from the video of a structure, captured by an Unmanned Aircraft System (UAS) to produce as-built documentation to aid inspection of large multi-storied building during construction. Our system uses the output from a Simultaneous Localization and Mapping system and a 3D CAD model of the structure in order to construct a spatial database to store images into the 3D CAD model space. This allows the user to perform a spatial query for images through spatial indexing into the 3D CAD model space. The image returned by the spatial query is used to extract metric information. The spatial database is also used to generate a 3D textured model which provides a visual as-built documentation.

Keywords: Computer Vision, Construction Inspection, Spatial Query, Metric Data Analysis