azul: A fast and efficient 3D city model viewer for macOS

Ohori, Ken Arroyo

doi:10.1111/tgis.12673

Cited by 10 publications

(8 citation statements)

References 14 publications

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“…Further, difficulties concerned with parsing CityGML files, interpreting all the various ways in which geometries could be stored, resolving XLinks, coping with different Coordinate Reference Systems and providing support for ADEs (i.e. application domain extensions) are other issues of CityGML standard (Ledoux et al, 2019;Arroyo Ohori, 2020). Moreover, interoperability has been only studied on a technical basis, e.g.…”

Section: Challenges Of Cim Uptakementioning

confidence: 99%

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The uptake of City Information Modelling (CIM): a comprehensive review of current implementations, challenges and future outlook

Omrany

GhaffarianHoseini

Ghaffarianhoseini

et al. 2022

SASBE

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PurposeThis paper critically analysed 195 articles with the objectives of providing a clear understanding of the current City Information Modelling (CIM) implementations, identifying the main challenges hampering the uptake of CIM and providing recommendations for the future development of CIM.Design/methodology/approachThis paper adopts the PRISMA method in order to perform the systematic literature review.FindingsThe results identified nine domains of CIM implementation including (1) natural disaster management, (2) urban building energy modelling, (3) urban facility management, (4) urban infrastructure management, (5) land administration systems, (6) improvement of urban microclimates, (7) development of digital twin and smart cities, (8) improvement of social engagement and (9) urban landscaping design. 10; Further, eight challenges were identified that hinder the widespread employment of CIM including (1) reluctance towards CIM application, (2) data quality, (3) computing resources and storage inefficiency, (4) data integration between BIM and GIS and interoperability, (5) establishing a standardised workflow for CIM implementation, (6) synergy between all parties involved, (7) cybersecurity and intellectual property and (8) data management.Originality/valueThis is the first paper of its kind that provides a holistic understanding of the current implementation of CIM. The outcomes will benefit multiple target groups. First, urban planners and designers will be supplied with a status-quo understanding of CIM implementations. Second, this research introduces possibilities of CIM deployment for the governance of cities; hence the outcomes can be useful for policymakers. Lastly, the scientific community can use the findings of this study as a reference point to gain a comprehensive understanding of the field and contribute to the future development of CIM.

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Section: Challenges Of Cim Uptakementioning

confidence: 99%

“…application domain extensions) are other issues of CityGML standard (Ledoux et al. , 2019; Arroyo Ohori, 2020). Moreover, interoperability has been only studied on a technical basis, e.g.…”

Section: Challenges Of Cim Uptakementioning

confidence: 99%

The uptake of City Information Modelling (CIM): a comprehensive review of current implementations, challenges and future outlook

Omrany

GhaffarianHoseini

Ghaffarianhoseini

et al. 2022

SASBE

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“…In the case of resulting CityGML data, the delivered models were validated by means of the geovalidation tools available at http://geovalidation.bk.tudelft.nl: val3dity (which applies tests to the geometry) and the CityGML schema checker. Moreover, their visualization within two 3D viewers was checked: azul (https://github.com/tudelft3d/azul) [37] and the FZK Viewer (https: //www.iai.kit.edu/english/1648.php). The products of the conversion by means of the IFC2CityGML tool, producing CityGML v.3 data could not be checked, since not supported by the used software; only the validation of the geometry could be verified.…”

Section: Ifc To Citygml and Citygml To Ifc Conversions (Task 4)mentioning

confidence: 99%

Tools for BIM-GIS Integration (IFC Georeferencing and Conversions): Results from the GeoBIM Benchmark 2019

Noardo

Harrie

Ohori

et al. 2020

IJGI

Self Cite

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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.

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“…Furthermore, in another related study, Ken Arroyo Ohori (2020) has developed azul, a free and open‐source macOS viewer for 3D city models. In his article, the inner workings of azul are described in detail.…”

Section: Open Source Geospatial Software and Standardsmentioning

confidence: 99%

“…In fact, it is understood that the detection of spatial clusters and outliers is critical to a number of spatial data analysis techniques. Many techniques embed spatial clustering components with the aim of exploring spatial variability and patterns in a data set, caused by the spatial association that generally affects most spatial data (Oxoli, Sabri, Rajabifard, & Brovelli, 2020). In this study, the authors propose an exploratory procedure to detect and classify clusters and outliers in a multivariate spatial data set.…”

Section: Open Geospatial Solutions and Techniquesmentioning

confidence: 99%

Highlighting recent trends in open source geospatial science and software

Mobasheri

Mitášová

Neteler

et al. 2020

Transactions in GIS

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Over the past decade, open source software has become widely accepted across governments, industries and academia. The geospatial domain is no exception and this trend is also reflected in geospatial research and practice. Nowadays, governments and stakeholders from the business sector both participate and promote open geospatial science including open geospatial data and open source geospatial software. As a result, open source geospatial science and software (i.e., open source GIS) is a growing area of research with numerous applications and great potential. The consistent prevalence of open source GIS studies motivated this thematic collection. The contributions are divided into two main categories. In the first, novel open source geospatial software and standards are presented, each of which has been implemented for and applied to a certain use case, and at the same time may be applied to other use cases due to the reproducibility of open source software. The second category presents and discusses the applicability and usability of open source GIS solutions for various interdisciplinary domains, mostly related to urban studies.

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azul: A fast and efficient 3D city model viewer for macOS

Abstract: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 10 publications

References 14 publications

The uptake of City Information Modelling (CIM): a comprehensive review of current implementations, challenges and future outlook

The uptake of City Information Modelling (CIM): a comprehensive review of current implementations, challenges and future outlook

Tools for BIM-GIS Integration (IFC Georeferencing and Conversions): Results from the GeoBIM Benchmark 2019

Highlighting recent trends in open source geospatial science and software

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