Creation of Parametric BIM Objects from Point Clouds Using Nurbs

Barazzetti, Luigi; Banfi, Fabrizio; Brumana, Raffaella; Previtali, Mattia

doi:10.1111/phor.12122

Cited by 107 publications

(81 citation statements)

References 43 publications

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“…In addition, HBIM approach needs to face theoretical and pratical challenges and to fill gap regard the BIM: a wide discussion about differences between a) semantic object or unsegmented geometries, b) standardization or irregularity c) parametric intelligence or geometric accuracy is provided in (Apollonio et al, 2016). In HBIM field, the modelling phase and the semantic sub-division in various elements are sufficiently robust, although time-consuming (Garagnani and Manferdini, 2013) (Barazzetti et al, 2015) and based on proprietary tools . According several studies, the observed trend in the definition of HBIM is the creation of a model starting from survey data (i.e.…”

Section: State Of Artmentioning

confidence: 99%

Hbim Methodology as a Bridge Between Italy and Argentina

Moreira

Quattrini

Maggiolo

et al. 2018

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:The availability of efficient HBIM workflows could represent a very important change towards a more efficient management of the historical real estate. The present work shows how to obtain accurate and reliable information of heritage buildings through reality capture and 3D modelling to support restoration purposes or knowledge-based applications. Two cases studies metaphorically joint Italy with Argentina.

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Section: State Of Artmentioning

confidence: 99%

Hbim Methodology as a Bridge Between Italy and Argentina

Moreira

Quattrini

Maggiolo

et al. 2018

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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“…It also includes new bridges often characterized by variable curvature and cross sections. From this point of view, the lack of powerful BIM instruments able to reconstruct complex shapes is still a major drawback in BIM projects, and the generation of accurate historic BIM (Murphy et al, 2013) surveyed from laser scanning point clouds is a challenging task which requires the development of new libraries or the implementation of new algorithms (some examples are discussed in Fai et al, 2011;Baik et al, 2015;Oreni et al, 2014;Dore et al, 2015;Quattrini et al, 2015, Barazzetti et al, 2015c. In addition, the use of software for "pure" (direct) 3D modelling was not possible (e.g.…”

Section: * Corresponding Authormentioning

confidence: 99%

Bim From Laser Scans… Not Just for Buildings: Nurbs-Based Parametric Modeling of a Medieval Bridge

Barazzetti¹,

Banfi²,

Brumana³

et al. 2016

ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:Building Information Modelling is not limited to buildings. BIM technology includes civil infrastructures such as roads, dams, bridges, communications networks, water and wastewater networks and tunnels. This paper describes a novel methodology for the generation of a detailed BIM of a complex medieval bridge. The use of laser scans and images coupled with the development of algorithms able to handle irregular shapes allowed the creation of advanced parametric objects, which were assembled to obtain an accurate BIM. The lack of existing object libraries required the development of specific families for the different structural elements of the bridge. Finally, some applications aimed at assessing the stability and safety of the bridge are illustrated and discussed. The BIM of the bridge can incorporate this information towards a new "BIMonitoring" concept.to preserve the geometric complexity provided by point clouds, obtaining a detailed BIM with object relationships and attributes.

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“…Considering the general purpose of the work, the modeling process targeted a hypothetical LOD level of 200 (compared now to LOD B in the new Italian regulations, named UNI 11337) and then turned to grasp especially masonry systems (with the relative openings) and structural systems with their tracking irregularities (Barazzetti at al., 2015a). The employed modeling strategy mainly exploited the traditional approach for creating 3D solid primitives by means of NURBS (Non Uniform Rational BasisSplines) and LOW-POLY meshes (Tang et al, 2010;Barazzetti at al., 2015b). Then, all the created primitives were translated in simple solid meshes.…”

Section: The Bim Modelingmentioning

confidence: 99%

Critical Issues and Key Points From the Survey to the Creation of the Historical Building Information Model: The Case of Santo Stefano Basilica

Castagnetti

Dubbini

Ricci³

et al. 2017

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:The new era of designing in architecture and civil engineering applications lies in the Building Information Modeling (BIM) approach, based on a 3D geometric model including a 3D database. This is easier for new constructions whereas, when dealing with existing buildings, the creation of the BIM is based on the accurate knowledge of the as-built construction. Such a condition is allowed by a 3D survey, often carried out with laser scanning technology or modern photogrammetry, which are able to guarantee an adequate points cloud in terms of resolution and completeness by balancing both time consuming and costs with respect to the request of final accuracy. The BIM approach for existing buildings and even more for historical buildings is not yet a well known and deeply discussed process. There are still several choices to be addressed in the process from the survey to the model and critical issues to be discussed in the modeling step, particularly when dealing with unconventional elements such as deformed geometries or historical elements. The paper describes a comprehensive workflow that goes through the survey and the modeling, allowing to focus on critical issues and key points to obtain a reliable BIM of an existing monument. The case study employed to illustrate the workflow is the Basilica of St. Stefano in Bologna (Italy), a large monumental complex with great religious, historical and architectural assets.

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Creation of Parametric BIM Objects from Point Clouds Using Nurbs

Cited by 107 publications

References 43 publications

Hbim Methodology as a Bridge Between Italy and Argentina

Hbim Methodology as a Bridge Between Italy and Argentina

Bim From Laser Scans… Not Just for Buildings: Nurbs-Based Parametric Modeling of a Medieval Bridge

Critical Issues and Key Points From the Survey to the Creation of the Historical Building Information Model: The Case of Santo Stefano Basilica

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