Journal
AUTOMATION IN CONSTRUCTION
Volume 48, Issue -, Pages 44-52Publisher
ELSEVIER
DOI: 10.1016/j.autcon.2014.08.010
Keywords
Automation; As-built constructions; Complex sites; Unmanned aerial system (UAS); Computer vision; Photogrammetry; Software development; Point clouds; Electrical substations
Funding
- USAL-IBERDROLA framework
- Science and Innovation Ministry [IPT-120000-2010-039, BIA2010-15145]
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In recent years, the modeling from images, called image-based modeling, is emerging as a powerful alternative for the as-built three-dimensional (3D) reconstruction of complex scenarios compared with the use of laser scanner technology or classical topographic methods. Image-based modeling is a non-invasive and low-cost technology that allows 3D reconstruction of objects and scenarios by using only images. However, although several tools currently exist for converting from two-dimensional (2D) to 3D, the specific requirements of quality and completeness for these types of scenarios are difficult to determine. In this paper, a methodology for automatically reconstructing 3D complex scenarios, particularly electrical substations, using images acquired from an unmanned aerial system is analyzed and proposed. This methodology has been incorporated by the Iberdrola Company as an optimal technique for obtaining low-cost 3D as-built metric models of electrical substations. The results obtained show that this camera-based low-cost system is a competitive alternative to laser scanning systems for modeling as-built complex constructions and can become an essential tool for facility planning and management tasks. (C) 2014 Elsevier B.V. All rights reserved.
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