Visualizing Large-Scale Building Information Modeling Models within Indoor and Outdoor Environments Using a Semantics-Based Method

Building information modeling (BIM), with detailed geometry and semantics of the indoor environment, has become an essential part of smart city development and city information modeling (CIM). However, visualizing large-scale BIM models within geographic information systems (GIS), such as virtual gl...

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Autores principales:	Qingxiang Chen, Jing Chen, Wumeng Huang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	building information modeling geographic information system large-scale visualization semantics Geography (General) G1-922
Acceso en línea:	https://doaj.org/article/d6cd5ce6753842b999874a9c52663d50
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id	oai:doaj.org-article:d6cd5ce6753842b999874a9c52663d50
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spelling	oai:doaj.org-article:d6cd5ce6753842b999874a9c52663d502021-11-25T17:53:01ZVisualizing Large-Scale Building Information Modeling Models within Indoor and Outdoor Environments Using a Semantics-Based Method10.3390/ijgi101107562220-9964https://doaj.org/article/d6cd5ce6753842b999874a9c52663d502021-11-01T00:00:00Zhttps://www.mdpi.com/2220-9964/10/11/756https://doaj.org/toc/2220-9964Building information modeling (BIM), with detailed geometry and semantics of the indoor environment, has become an essential part of smart city development and city information modeling (CIM). However, visualizing large-scale BIM models within geographic information systems (GIS), such as virtual globes, remains a technological challenge with limited hardware resources. Previous methods generally removed indoor features in a single-source (BIM) scene to reduce the computational burden from outdoor views, which have not been applied to the multi-source and -scale geographic environment (e.g., virtual globes). This approach neglected special BIM semantics (e.g., transparent windows), which may miss a part of geographic features or buildings and cause unreasonable visualization. Besides, the method overlooked indoor visualization optimization, which may burden computing resources when visualizing big and complex buildings from indoor views. To address these problems, we propose a semantics-based method for visualizing large-scale BIM models within indoor and outdoor environments. First, we organize large-scale BIM models based on a latitude-longitude grid (LLG) in the outdoor environment; a multilayer cell-and-portal graph is used to index the structure of the BIM model and building entities. Second, we propose a scheduling algorithm to achieve the integrated visualization in indoor and outdoor environments considering BIM semantics. The application of the proposed method to a multi-scale and -source environment confirmed that it can achieve an effective and efficient visualization for huge BIM models in indoor-outdoor scenes. Compared with the previous study, the proposed method considers the BIM semantics and thus can visualize more complete features from outdoor and indoor views of BIM models in the virtual globe. Besides, the study only loads as visible data as possible, which can retain lower the volume of increased geometry, and thus keep a higher frame rate for the tested areas.Qingxiang ChenJing ChenWumeng HuangMDPI AGarticlebuilding information modelinggeographic information systemlarge-scale visualizationsemanticsGeography (General)G1-922ENISPRS International Journal of Geo-Information, Vol 10, Iss 756, p 756 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	building information modeling geographic information system large-scale visualization semantics Geography (General) G1-922
spellingShingle	building information modeling geographic information system large-scale visualization semantics Geography (General) G1-922 Qingxiang Chen Jing Chen Wumeng Huang Visualizing Large-Scale Building Information Modeling Models within Indoor and Outdoor Environments Using a Semantics-Based Method
description	Building information modeling (BIM), with detailed geometry and semantics of the indoor environment, has become an essential part of smart city development and city information modeling (CIM). However, visualizing large-scale BIM models within geographic information systems (GIS), such as virtual globes, remains a technological challenge with limited hardware resources. Previous methods generally removed indoor features in a single-source (BIM) scene to reduce the computational burden from outdoor views, which have not been applied to the multi-source and -scale geographic environment (e.g., virtual globes). This approach neglected special BIM semantics (e.g., transparent windows), which may miss a part of geographic features or buildings and cause unreasonable visualization. Besides, the method overlooked indoor visualization optimization, which may burden computing resources when visualizing big and complex buildings from indoor views. To address these problems, we propose a semantics-based method for visualizing large-scale BIM models within indoor and outdoor environments. First, we organize large-scale BIM models based on a latitude-longitude grid (LLG) in the outdoor environment; a multilayer cell-and-portal graph is used to index the structure of the BIM model and building entities. Second, we propose a scheduling algorithm to achieve the integrated visualization in indoor and outdoor environments considering BIM semantics. The application of the proposed method to a multi-scale and -source environment confirmed that it can achieve an effective and efficient visualization for huge BIM models in indoor-outdoor scenes. Compared with the previous study, the proposed method considers the BIM semantics and thus can visualize more complete features from outdoor and indoor views of BIM models in the virtual globe. Besides, the study only loads as visible data as possible, which can retain lower the volume of increased geometry, and thus keep a higher frame rate for the tested areas.
format	article
author	Qingxiang Chen Jing Chen Wumeng Huang
author_facet	Qingxiang Chen Jing Chen Wumeng Huang
author_sort	Qingxiang Chen
title	Visualizing Large-Scale Building Information Modeling Models within Indoor and Outdoor Environments Using a Semantics-Based Method
title_short	Visualizing Large-Scale Building Information Modeling Models within Indoor and Outdoor Environments Using a Semantics-Based Method
title_full	Visualizing Large-Scale Building Information Modeling Models within Indoor and Outdoor Environments Using a Semantics-Based Method
title_fullStr	Visualizing Large-Scale Building Information Modeling Models within Indoor and Outdoor Environments Using a Semantics-Based Method
title_full_unstemmed	Visualizing Large-Scale Building Information Modeling Models within Indoor and Outdoor Environments Using a Semantics-Based Method
title_sort	visualizing large-scale building information modeling models within indoor and outdoor environments using a semantics-based method
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/d6cd5ce6753842b999874a9c52663d50
work_keys_str_mv	AT qingxiangchen visualizinglargescalebuildinginformationmodelingmodelswithinindoorandoutdoorenvironmentsusingasemanticsbasedmethod AT jingchen visualizinglargescalebuildinginformationmodelingmodelswithinindoorandoutdoorenvironmentsusingasemanticsbasedmethod AT wumenghuang visualizinglargescalebuildinginformationmodelingmodelswithinindoorandoutdoorenvironmentsusingasemanticsbasedmethod
_version_	1718411891386089472

Visualizing Large-Scale Building Information Modeling Models within Indoor and Outdoor Environments Using a Semantics-Based Method

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