https://www.mdpi.com/2220-9964/9/9/502
Tools for BIM-GIS Integration (IFC Georeferencing and Conversions): Results from the GeoBIM Benchmark 2019.
Many authors..Benchmark..
The integration of 3D city models with Building Information Models (BIM), coined as GeoBIM, facilitates improved data support to several applications, e.g., 3D map updates, building permits issuing, detailed city analysis, infrastructure design, context-based building design, to name a few. To solve the integration, several issues need to be tackled and solved, i.e., harmonization of features, interoperability, format conversions, integration of procedures. The GeoBIM benchmark 2019, funded by ISPRS and EuroSDR, evaluated the state of implementation of tools addressing some of those issues. In particular, in the part of the benchmark described in this paper, the application of georeferencing to Industry Foundation Classes (IFC) models and making consistent conversions between 3D city models and BIM are investigated, considering the OGC CityGML and buildingSMART IFC as reference standards. In the benchmark, sample datasets in the two reference standards were provided. External volunteers were asked to describe and test georeferencing procedures for IFC models and conversion tools between CityGML and IFC. From the analysis of the delivered answers and processed datasets, it was possible to notice that while there are tools and procedures available to support georeferencing and data conversion, comprehensive definition of the requirements, clear rules to perform such two tasks, as well as solid technological solutions implementing them, are still lacking in functionalities. Those specific issues can be a sensible starting point for planning the next GeoBIM integration agendas.
https://www.mdpi.com/2220-9964/9/9/545
Drift Invariant Metric Quality Control of Construction Sites Using BIM and Point Cloud Data
2020, KU-Leuven,
Construction site monitoring is currently performed through visual inspections and costly selective measurements. Due to the small overhead in construction projects, additional resources are scarce to frequently conduct a metric quality assessment of the constructed objects. However, contradictory, construction projects are characterised by high failure costs which are often caused by erroneously constructed structural objects. With the upcoming use of periodic remote sensing during the different phases of the building process, new possibilities arise to advance from a selective quality analysis to an in-depth assessment of the full construction site. In this work, a novel methodology is presented to rapidly evaluate a large number of built objects on a construction site. Given a point cloud and a set of as-design BIM elements, our method evaluates the deviations between both datasets and computes the positioning errors of each object. Unlike the current state of the art, our method computes the error vectors regardless of drift, noise, clutter and (geo)referencing errors, leading to a better detection rate. The main contributions are the efficient matching of both datasets, the drift invariant metric evaluation and the intuitive visualisation of the results. The proposed analysis facilitates the identification of construction errors early on in the process, hence significantly lowering the failure costs. The application is embedded in native BIM software and visualises the objects by a simple color code, providing an intuitive indicator for the positioning accuracy of the built objects.
@lukas what's a good way of putting your academic knowledge of what's happening in front of more people? Have you thought about writing an article every now and then "BIM in Academia - Update!" We could then post them on the main site and push them via our social media. A simple rewriting and contextualizing of a few related articles on a topic could be interesting. Always liking in the article to a forum thread for further discussions ... what do you think? Maybe quarterly?
http://export.arxiv.org/abs/2011.03117
Investigating the automation of building permit checks through 3D GeoBIM information
TU Delft 2020, Noardo et al.
The automation of building permits has great relevance within the worldwide digitalization efforts. The reuse of models produced by designers and the integration within geoinformation, necessary for many regulations, would make the process more effective. However, a gap is left by most of studies and pilots adopting conceptual approaches. In this paper, rather than taking a top-down approach, we departed from the data as available and made the necessary inferences, which gave the opportunity to tackle basic and common issues often preventing a smooth automatic processing. While the case study is specific in location, regulations and input models, the type of issues encountered in data integration and extraction of incomplete and partially invalid data is exemplary for automated code compliance checking in general. As such, guidelines were proposed accordingly, together with a tool to work with such models and a possible strategy to add georeferencing information to the IFC models.
Featuring BlenderBIM to make the BIM model & IfcOpenShell for adding (complex) properties & propertysets. We used mvdXML for ensuring data quality in our BIM, which I know others here see as being at the end of its life. However, the methodology would be approximately the same using another method like MicroMVD (which hopefully at this point can do the same things but in an easier way? I don't know, I'll have to check)
Graph Rewriting Techniques in Engineering Design
Lothar Kolbeck *, Simon Vilgertshofer, Jimmy Abualdenien and André Borrmann, TUM School of Engineering and Design, Technical University of Munich
Capturing human knowledge underlying the design and engineering of products has been among the main goals of computational engineering since its very beginning. Over the last decades, various approaches have been proposed to tackle this objective. Among the most promising approaches is the application of graph theory for representing product structures by defining nodes representing entities and edges representing relations among them. The concrete meaning of these structures ranges from geometry representations over hierarchical product breakdowns to functional descriptions and flows of information or resources. On top of these graph structures, graph rewriting techniques provide another powerful layer of technology. By enabling the formal definition of rules for transforming graph structures, they allow on the one hand side to formally capture the engineering development process. On the other hand, the assembly of rewriting rules into graph grammars allows for an exhaustive search of the solution space of the engineering problem at hand. In combination with search strategies, an automated optimization of the design under given constraints and objectives can be realized. The paper provides an overview of the current state-of-the-art in graph rewriting and its applications in engineering design, with a focus on the built environment. It concludes with a discussion of the progress achieved and the missing research gaps. https://www.researchgate.net/publication/358332377
Comments
https://www.mdpi.com/2220-9964/9/9/502
Tools for BIM-GIS Integration (IFC Georeferencing and Conversions): Results from the GeoBIM Benchmark 2019.
Many authors..Benchmark..
The integration of 3D city models with Building Information Models (BIM), coined as GeoBIM, facilitates improved data support to several applications, e.g., 3D map updates, building permits issuing, detailed city analysis, infrastructure design, context-based building design, to name a few. To solve the integration, several issues need to be tackled and solved, i.e., harmonization of features, interoperability, format conversions, integration of procedures. The GeoBIM benchmark 2019, funded by ISPRS and EuroSDR, evaluated the state of implementation of tools addressing some of those issues. In particular, in the part of the benchmark described in this paper, the application of georeferencing to Industry Foundation Classes (IFC) models and making consistent conversions between 3D city models and BIM are investigated, considering the OGC CityGML and buildingSMART IFC as reference standards. In the benchmark, sample datasets in the two reference standards were provided. External volunteers were asked to describe and test georeferencing procedures for IFC models and conversion tools between CityGML and IFC. From the analysis of the delivered answers and processed datasets, it was possible to notice that while there are tools and procedures available to support georeferencing and data conversion, comprehensive definition of the requirements, clear rules to perform such two tasks, as well as solid technological solutions implementing them, are still lacking in functionalities. Those specific issues can be a sensible starting point for planning the next GeoBIM integration agendas.
https://www.mdpi.com/2220-9964/9/9/545
Drift Invariant Metric Quality Control of Construction Sites Using BIM and Point Cloud Data
2020, KU-Leuven,
Construction site monitoring is currently performed through visual inspections and costly selective measurements. Due to the small overhead in construction projects, additional resources are scarce to frequently conduct a metric quality assessment of the constructed objects. However, contradictory, construction projects are characterised by high failure costs which are often caused by erroneously constructed structural objects. With the upcoming use of periodic remote sensing during the different phases of the building process, new possibilities arise to advance from a selective quality analysis to an in-depth assessment of the full construction site. In this work, a novel methodology is presented to rapidly evaluate a large number of built objects on a construction site. Given a point cloud and a set of as-design BIM elements, our method evaluates the deviations between both datasets and computes the positioning errors of each object. Unlike the current state of the art, our method computes the error vectors regardless of drift, noise, clutter and (geo)referencing errors, leading to a better detection rate. The main contributions are the efficient matching of both datasets, the drift invariant metric evaluation and the intuitive visualisation of the results. The proposed analysis facilitates the identification of construction errors early on in the process, hence significantly lowering the failure costs. The application is embedded in native BIM software and visualises the objects by a simple color code, providing an intuitive indicator for the positioning accuracy of the built objects.
@lukas what's a good way of putting your academic knowledge of what's happening in front of more people? Have you thought about writing an article every now and then "BIM in Academia - Update!" We could then post them on the main site and push them via our social media. A simple rewriting and contextualizing of a few related articles on a topic could be interesting. Always liking in the article to a forum thread for further discussions ... what do you think? Maybe quarterly?
http://export.arxiv.org/abs/2011.03117
Investigating the automation of building permit checks through 3D GeoBIM information
TU Delft 2020, Noardo et al.
The automation of building permits has great relevance within the worldwide digitalization efforts. The reuse of models produced by designers and the integration within geoinformation, necessary for many regulations, would make the process more effective. However, a gap is left by most of studies and pilots adopting conceptual approaches. In this paper, rather than taking a top-down approach, we departed from the data as available and made the necessary inferences, which gave the opportunity to tackle basic and common issues often preventing a smooth automatic processing. While the case study is specific in location, regulations and input models, the type of issues encountered in data integration and extraction of incomplete and partially invalid data is exemplary for automated code compliance checking in general. As such, guidelines were proposed accordingly, together with a tool to work with such models and a possible strategy to add georeferencing information to the IFC models.
Happy to share our recent published article:
Digitalization of culturally significant buildings: ensuring high-quality data exchanges in the heritage domain using OpenBIM
Heritage Science 2022 Oostwegel et al.
https://heritagesciencejournal.springeropen.com/articles/10.1186/s40494-021-00640-y
Featuring BlenderBIM to make the BIM model & IfcOpenShell for adding (complex) properties & propertysets. We used mvdXML for ensuring data quality in our BIM, which I know others here see as being at the end of its life. However, the methodology would be approximately the same using another method like MicroMVD (which hopefully at this point can do the same things but in an easier way? I don't know, I'll have to check)
Graph Rewriting Techniques in Engineering Design
Lothar Kolbeck *, Simon Vilgertshofer, Jimmy Abualdenien and André Borrmann, TUM School of Engineering and Design, Technical University of Munich
Capturing human knowledge underlying the design and engineering of products has been among the main goals of computational engineering since its very beginning. Over the last decades, various approaches have been proposed to tackle this objective. Among the most promising approaches is the application of graph theory for representing product structures by defining nodes representing entities and edges representing relations among them. The concrete meaning of these structures ranges from geometry representations over hierarchical product breakdowns to functional descriptions and flows of information or resources. On top of these graph structures, graph rewriting techniques provide another powerful layer of technology. By enabling the formal definition of rules for transforming graph structures, they allow on the one hand side to formally capture the engineering development process. On the other hand, the assembly of rewriting rules into graph grammars allows for an exhaustive search of the solution space of the engineering problem at hand. In combination with search strategies, an automated optimization of the design under given constraints and objectives can be realized. The paper provides an overview of the current state-of-the-art in graph rewriting and its applications in engineering design, with a focus on the built environment. It concludes with a discussion of the progress achieved and the missing research gaps.
https://www.researchgate.net/publication/358332377
https://publications.cms.bgu.tum.de/2022_Esser_advei.pdf or https://publications.cms.bgu.tum.de/2022_Esser_advei.pdf
Graph-based version control for asynchronous BIM collaboration
Sebastian Esser, Simon Vilgertshofer , André Borrmann, TU _ München
Asynchronous collaboration, object-based version control, BIM Level 3, Common Data Environment