scholarly journals Indoor Reconstruction from Floorplan Images with a Deep Learning Approach

2020 ◽  
Vol 9 (2) ◽  
pp. 65 ◽  
Author(s):  
Hanme Jang ◽  
Kiyun Yu ◽  
JongHyeon Yang
Keyword(s):  
Spatial Data ◽  
Spatial Information ◽  
International Standards ◽  
Corner Detection ◽  
Thick Wall ◽  
Markup Language ◽  
Vector Data ◽  
Edge Structure ◽  
Geography Markup Language ◽  
Space Modeling

Although interest in indoor space modeling is increasing, the quantity of indoor spatial data available is currently very scarce compared to its demand. Many studies have been carried out to acquire indoor spatial information from floorplan images because they are relatively cheap and easy to access. However, existing studies do not take international standards and usability into consideration, they consider only 2D geometry. This study aims to generate basic data that can be converted to indoor spatial information using IndoorGML (Indoor Geography Markup Language) thick wall model or the CityGML (City Geography Markup Language) level of detail 2 by creating vector-formed data while preserving wall thickness. To achieve this, recent Convolutional Neural Networks are used on floorplan images to detect wall and door pixels. Additionally, centerline and corner detection algorithms were applied to convert wall and door images into vector data. In this manner, we obtained high-quality raster segmentation results and reliable vector data with node-edge structure and thickness attributes that enabled the structures of vertical and horizontal wall segments and diagonal walls to be determined with precision. Some of the vector results were converted into CityGML and IndoorGML form and visualized, demonstrating the validity of our work.

scholarly journals GroundWater Markup Language (GWML) – enabling groundwater data interoperability in spatial data infrastructures

2011 ◽  
Vol 14 (1) ◽  
pp. 93-107 ◽  
Author(s):  
Eric Boisvert ◽  
Boyan Brodaric
Keyword(s):  
Spatial Data ◽  
Groundwater Resources ◽  
Heterogeneous Data ◽  
Commercial Application ◽  
Markup Language ◽  
Online Data ◽  
Data Interoperability ◽  
Scientific Application ◽  
Data Infrastructure ◽  
Geography Markup Language

Increasing stress on global groundwater resources is leading to new approaches to the management and delivery of groundwater data. These approaches include the deployment of a Spatial Data Infrastructure (SDI) to enable online data interoperability amongst numerous and heterogeneous data sources. Often an important component of an SDI is a global domain schema, which serves as a central structure for the query and transport of data, but at present there does not exist a schema for groundwater data that is strongly compliant with SDI concepts, standards, and technologies. In this paper we present GroundWater Markup Language (GWML), a groundwater application of the Geography Markup Language (GML). GWML can be used in conjunction with a variety of web services to facilitate data interoperability in a SDI. We describe three common usage scenarios that motivate the design of GWML and a three-stage design methodology involving conceptual, logical and physical schemas. The resultant GWML has broad scope as demonstrated by its implementation in the Canadian Groundwater Information Network. Example uses include decision support in resource management, a scientific application for aquifer mapping, and a commercial application for drill site selection. These demonstrated uses suggest GWML can play a key role in emerging groundwater SDI.

scholarly journals Ontology-Based Semantic Conceptualisation of Historical Built Heritage to Generate Parametric Structured Models from Point Clouds

2021 ◽  
Vol 11 (6) ◽  
pp. 2813
Author(s):  
Elisabetta Colucci ◽  
Xufeng Xing ◽  
Margarita Kokla ◽  
Mir Abolfazl Mostafavi ◽  
Francesca Noardo ◽  
...  
Keyword(s):  
Spatial Information ◽  
Reference Model ◽  
Point Clouds ◽  
International Committee ◽  
International Standards ◽  
Historical Building ◽  
Geography Markup Language ◽  
Survey Techniques ◽  
Built Heritage ◽  
Building Information

Nowadays, cultural and historical built heritage can be more effectively preserved, valorised and documented using advanced geospatial technologies. In such a context, there is a major issue concerning the automation of the process and the extraction of useful information from a huge amount of spatial information acquired by means of advanced survey techniques (i.e., highly detailed LiDAR point clouds). In particular, in the case of historical built heritage (HBH) there are very few effective efforts. Therefore, in this paper, the focus is on establishing the connections between semantic and geometrical information in order to generate a parametric, structured model from point clouds using ontology as an effective approach for the formal conceptualisation of application domains. Hence, in this paper, an ontological schema is proposed to structure HBH representations, starting with international standards, vocabularies, and ontologies (CityGML-Geography Markup Language, International Committee for Documentation conceptual reference model (CIDOC-CRM), Industry Foundation Classes (IFC), Getty Art and Architecture Thesaurus (AAT), as well as reasoning about morphology of historical centres by analysis of real case studies) to represent the built and architecture domain. The validation of such schema is carried out by means of its use to guide the segmentation of a LiDAR point cloud from a castle, which is later used to generate parametric geometries to be used in a historical building information model (HBIM).

scholarly journals An Overview of the Use of GML in Modern Spatial Data Infrastructures

2010 ◽  
Vol 42 (1) ◽  
pp. 60-67 ◽  
Author(s):  
Viktors Skoks ◽  
Christian Steurer
Keyword(s):  
Spatial Data ◽  
Earth Observation ◽  
Geospatial Data ◽  
Observation Data ◽  
Markup Language ◽  
Geography Markup Language ◽  
Data Infrastructures ◽  
Spatial Data Infrastructures ◽  
Earth Observation Data ◽  
Data Harmonisation

An Overview of the Use of GML in Modern Spatial Data InfrastructuresThis paper introduces an overview of the use of Geography Markup Language in modern Spatial Data Infrastructures. The goal of the paper was to indicate some of the main consequences of the use of Geography Markup Language in the important geospatial data harmonisation processes, both search and access, which are in current use. In order to show a practical example of the use of Geography Markup Language, the system for Earth observation data processing and distribution at the Institute for Applied Remote Sensing at EURAC, Bolzano was studied. The results of the paper set out how Geography Markup Language is used in modern Spatial Data Infrastructures, and the degree to which the Geography Markup Language standard is helpful in achieving data harmonisation and interoperability.

Geospatial Interoperability

2011 ◽  
pp. 1652-1658
Author(s):  
Manoj Paul ◽  
S.K. Ghosh
Keyword(s):  
Information Sharing ◽  
Spatial Data ◽  
Spatial Information ◽  
Data Representation ◽  
Geospatial Data ◽  
Geospatial Information ◽  
Data Infrastructure ◽  
Geography Markup Language ◽  
Standard Data ◽  
Data Formats

Spatial information is an essential component in almost all decision support system due to the capability it provides for analyzing anything that has reference to the location on earth. Spatial data generally provides thematic information of different aspects over a region. Geospatial information, a variant of spatial information, is generally collected on thematic basis, where individual organizations are involved on any particular theme. Geospatial thematic data is being collected from decades and huge amount of data is available in different organizations (Stoimenov, Dordevi´c, & Stojanovi´c 2000). Information communities find it difficult to locate and retrieve required geospatial information from other geospatial sources in reliable and acceptable form. The problem that has been incurred is the lack of standards in geospatial data formats and storage/access mechanism (Devogele, Parent, Spaccapietra, 1998). Heterogeneity in geospatial data formats and access methods poses a major challenge for geospatial information sharing among a larger user community. With the growing need of geospatial information and widespread use of Internet has fostered the requirement of geospatial information sharing over the Web. The Geo-Web (Lake, Burggraf, Trninic, & Rae, 2005) is being envisioned to be a distributed network of interconnected geographic information sources and processing services that are: • Globally accessible, that is, they live on the internet and are accessed through standard Open Geospatial Consortium (OGC) and W3C interfaces, • Globally integrated data sources that make use of standard data representation for sharing and transporting geospatial data. Unless a standard means for geospatial information sharing is developed, interoperability cannot be realized. Without successful interoperability approaches, the realization of Geo-Web is not possible. Geo-Web is being developed to address the need for access to current and accurate geospatial information from diverse geospatial sources around the world. The National Spatial Data Infrastructure (NSDI) initiative has been taken by many nations for providing integrated access of geospatial information (Budak, Sheth, & Ramakrishnan, 2004). Actual data will be kept under the jurisdiction of the organization producing that data. A user will be interested in availing geospatial services through well-defined interface. Without some internationally agreed upon standards for geospatial data and computational methodology, this cannot be made into existence. This chapter discusses several issues towards geospatial interoperability and adoption of geography markup language (GML) (Cox, Cuthbert, Lake, & Martell, 2001; Lake et al., 2005) as a common geospatial data format. The associated technologies that can be used for realizing geospatial interoperability have also been discussed.

DARCY RIBEIRO UNIVERSITY CAMPUS MAP – 2017- TECHNICAL NOTE

2018 ◽  
Vol 7 (2) ◽  
Author(s):  
Rafael Sanzio Araújo dos Anjos ◽  
Jose Leandro de Araujo Conceição ◽  
Jõao Emanuel ◽  
Matheus Nunes
Keyword(s):  
Spatial Data ◽  
Spatial Information ◽  
Technical Note ◽  
University Campus ◽  
Communication Tool ◽  
Sources Of Information ◽  
Data Manipulation ◽  
Geographic Space ◽  
The Many ◽  
New Generation

The spatial information regarding the use of territory is one of the many strategies used to answer and to inform about what happened, what is happening and what may happen in geographic space. Therefore, the mapping of land use as a communication tool for the spatial data made significant progress in improving sources of information, especially over the last few decades, with new generation remote sensing products for data manipulation.

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