Semantic AsBuilt 3D Modeling of Buildings Under Construction from Laser-Scan Data Based on Local Convexity without an As-Planned Model

Son, Hyojoo; Na, Jongchul; Kim, Chang-Wan

doi:10.22260/isarc2015/0066

Cited by 7 publications

(3 citation statements)

References 20 publications

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“…Some studies on the reverse design that creates 3D models from laser scanning data are as follows: Nahangi et al [26] researched the removal of error from laser scanning data and their clustering. Son et al [27] researched the semantic creation of 3D models required in construction from laser scanning data. Gimemez et al [28] investigated technology related to creating 3D building models from 2D scan data.…”

Section: Laser Scanning Technologymentioning

confidence: 99%

Empirical Study on Structural Safety Diagnosis of Large-Scale Civil Infrastructure Using Laser Scanning and BIM

Ham

Lee

2018

Sustainability

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Existing structural safety diagnosis methods are time-consuming due to personnel-oriented measurement methods and have a limitation that it is difficult to obtain consistent research results. In order to overcome these limitations, this study proposes a structural safety diagnosis method using laser scanning and BIM. In spite of the various studies related to laser scanning and BIM, it is difficult to find a study that verifies the effect of shortening the service period and cost reduction in terms of project management. Therefore, in this study, case analysis of structural safety diagnosis of large-scale civil infrastructure was conducted. In the structural safety diagnosis, the laser scanning data and the BIM model were compared and analyzed to determine the degree of deformation of pipe rack (e.g., truss, column). Laser scanning data reflects the deformation state of large-scale civil infrastructure. On the other hand, the BIM model was constructed by reflecting the state before the transformation with reference to the laser scanning data. Finally, proposed method of structural safety diagnosis saved four months. In terms of manpower saving, 125 man-month was saved. The research findings can provide a quantitative basis for the introduction of laser scanning and BIM technology in the structural safety diagnosis of aging large-scale civil infrastructures. However, the limitations of this study have not been analyzed economically by considering the investment cost (e.g., hardware, software, training, etc.) of laser scanning and BIM technology and the cost saving effect of technology introduction.

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Section: Laser Scanning Technologymentioning

confidence: 99%

Empirical Study on Structural Safety Diagnosis of Large-Scale Civil Infrastructure Using Laser Scanning and BIM

Ham

Lee

2018

Sustainability

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“…This manual workflow adopts a three stage process, namely: multiple scans are captured from different TLS stations, point cloud data from these multiple scans is integrated through a process known as registration, and BIM is employed to author new objects using the point scans as a reference (Monserrat and Crosetto, 2008; Wang and Cho, 2015). Semi-automated, post processing software can expedite this process, but the procedure lacks integration and full automation (Bosché, 2010; Son, Na and Kim, 2015). A more comprehensive definition of this process is the “Scan-to-BIM” method, which incorporates semi-automated post processing software packages, enabling faster model reproduction time.…”

Section: Translating As-built Progress To Bim Via Laser Scanningmentioning

confidence: 99%

Vision and advocacy of optoelectronic technology developments in the AECO sector

Pärn

Edwards

2017

Built Env Proj and Ass Man

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Purpose: This research presents a literature review of laser scanning and 3D modelling devices, modes of delivery and applications within the architecture, engineering, construction and owner-operated (AECO) sector. Such devices are inextricably linked to modern digital built environment practices, particularly when used in conjunction with as-built building information modelling (BIM) development. The research also reports upon innovative technological advancements (such as machine vision) that coalesce with 3D scanning solutions. Design: A synthesis of literature is used to develop: a hierarchy of the modes of delivery for laser scan devices; a thematic analysis of 3D terrestrial laser scan technology applications; and a componential cross-comparative tabulation of laser scan technology and specifications. Findings: Findings reveal that the costly and labour intensive attributes of laser scanning devices have stimulated the development of hybrid automated and intelligent technologies to improve performance. Such developments are set to satisfy the increasing demand for digitisation of both existing and new buildings into BIM. Future work proposed will seek to: review what coalescence of digital technologies will provide an optimal and cost effective solution to accurately reconstructing the digital built environment; conduct case studies that implement hybrid digital solutions in pragmatic facilities management scenarios to measure their performance and user satisfaction; and eliminate manual remodelling tasks (such as point cloud reconstruction) via the use of computational intelligence algorithms integral within cloud based BIM platforms.Originality: Although laser scanning and 3D modelling have been widely covered en passant within the literature, scant research has conducted an holistic review of the technology, its applications and future developments. This review presents concise and lucid reference guidance that will intellectually challenge, and better inform, both practitioners and researchers.

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“…This has been utilized in segmenting tubular structures, such as pipes in Dimitrov and Golparvar-Fard (2015) and Kawashima et al (2014). Region growing has also been utilized in processing of large structural elements for a reinforced concrete bridge consisting of block-like slab/girder elements and cylindrical columns (Walsh et al, 2013), and for a concrete building consisting of rectangular concrete columns, con-crete box beams, and a concrete slab ceiling (Son et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Automated extraction of structural beam lines and connections from point clouds of steel buildings

Smith

Sarlo

2021

Computer aided Civil Eng

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This paper presents an alternative to segmentation of point clouds tailored specifically to large-scale steel buildings. Typical segmentation approaches process the 3D point data directly and focus on large blocky structures such as concrete; these are not generalizable to smaller, more complex geometries found in steel elements. The method takes advantage of image processing techniques by utilizing 2D "slices" of the point cloud, rather than the original 3D point cloud. Centroids of targeted structural cross sections are extracted from these slices using 2D convolution as a template-matching operation, and then projected back to 3D. From this, member centroidal axes are extracted using a custom linear region growing algorithm to create a 1D beam line model, including connections. Experimental results from scans of four prefabricated steel buildings indicate that the method is robust to variations in framing systems, clutter (e.g., obstructions, nonstructural elements), and point cloud sparsity.

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Semantic AsBuilt 3D Modeling of Buildings Under Construction from Laser-Scan Data Based on Local Convexity without an As-Planned Model

Cited by 7 publications

References 20 publications

Empirical Study on Structural Safety Diagnosis of Large-Scale Civil Infrastructure Using Laser Scanning and BIM

Empirical Study on Structural Safety Diagnosis of Large-Scale Civil Infrastructure Using Laser Scanning and BIM

Vision and advocacy of optoelectronic technology developments in the AECO sector

Automated extraction of structural beam lines and connections from point clouds of steel buildings

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