Construction Research Congress 2020
Vision-Based Quality Assessment of Prefabricated Components Using Images and Camera Poses
Publication: Construction Research Congress 2020: Project Management and Controls, Materials, and Contracts
ABSTRACT
In modular construction, poor quality assurance and quality control (QA/QC) at offsite facilities can lead to serious cost escalations and delays. Offsite components that are not properly inspected will lead to incompatibility issues on job site during assemblies, which will lead to re-fabrication and re-shipping. This added lead time can easily affect the critical path. There have been research efforts to perform a visual inspection (although not specific to modular construction) using high precision sensors (i.e., laser scanners) and image-based 3D reconstruction. The former solution can be an expensive solution for smaller firms. The latter solution results in inconsistent results because it results in relatively noisy data. This paper attempts to address this limitation by combining leveraging camera poses from image-based 3D reconstruction and their images to select boundaries to be inspected. The proposed method is validated through a case study. A high precision mobile laser scanner was used for collecting the ground truth. The results demonstrate the effectiveness of the proposed method.
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ACKNOWLEDGEMENT
This work was partially funded under Versatile Test Reactor Program of the U.S. Department of Energy (DOE) by Battelle Energy Alliance, LLC (BEA), the Management and Operating Contractor of Idaho National Laboratory (INL) under Contract Number DE-AC07-05ID14517 with DOE. The United States Government has a non-exclusive, paid-up, irrevocable, world-wide license to publish and reproduce the published form of this work and allow others to do so, for United States Government purposes. Any opinions, findings, conclusions and/or recommendations expressed in this paper are those of the authors and do not reflect the views of the entities above.
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Information & Authors
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Published In
Construction Research Congress 2020: Project Management and Controls, Materials, and Contracts
Pages: 1021 - 1029
Editors: David Grau, Ph.D., Arizona State University, Pingbo Tang, Ph.D., Arizona State University, and Mounir El Asmar, Ph.D., Arizona State University
ISBN (Online): 978-0-7844-8288-9
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© 2020 American Society of Civil Engineers.
History
Published online: Nov 9, 2020
Published in print: Nov 9, 2020
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