CUED Publications database

A Videogrammetric As-Built Data Collection Method for Digital Fabrication of Sheet Metal Roof Panels

Fathi, H and Brilakis, I (2013) A Videogrammetric As-Built Data Collection Method for Digital Fabrication of Sheet Metal Roof Panels. Advanced Engineering Informatics. -.

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Abstract

A roofing contractor typically needs to acquire as-built dimensions of a roof structure several times over the course of its build to be able to digitally fabricate sheet metal roof panels. Obtaining these measurements using the exiting roof surveying methods could be costly in terms of equipment, labor, and/or worker exposure to safety hazards. This paper presents a video-based surveying technology as an alternative method which is simple to use, automated, less expensive, and safe. When using this method, the contractor collects video streams with a calibrated stereo camera set. Unique visual characteristics of scenes from a roof structure are then used in the processing step to automatically extract as-built dimensions of roof planes. These dimensions are finally represented in a XML format to be loaded into sheet metal folding and cutting machines. The proposed method has been tested for a roofing project and the preliminary results indicate its capabilities.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div D > Construction Engineering
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:21
Last Modified: 17 Mar 2014 14:27
DOI: