Enhancing SmartKADASTER 3D City Model with Stratified Information in Supporting Smart City Enablement

Halim, Nur Zurairah Abdul; Karim, Hairi; Bernad, Siew Chengxi; Lim, Chan Keat; Mohamed, Azhari

doi:10.1007/978-3-030-78901-5_16

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…LOD 0-4 of CityGML with its accuracy requirements [9]. This paper builds on previous publications [1,[10][11][12][13][14] on 3D geovisualisation in the SmartKADASTER Phase II environment. This paper aims to discuss the implications of automatically extruding the LoD1 height reference from the LoD0 height reference using only the classified ALS point cloud of a building.…”

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confidence: 87%

Implications of Automated Height Extrusion and the Selection of Height Reference for LoD 1 SmartKADASTER City Model

Halim

Abdullah

Karim

2022

IOP Conf. Ser.: Earth Environ. Sci.

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This paper discusses the lessons learnt from the SmartKADASTER Phase II city model development project, specifically on the reconstruction of the LoD 1 CityGML models. The LoD 1 models were reconstructed using automated height extrusions, either by creating categorised point clouds or by employing a raster-based equation such as CHM=DSM-DTM. The methods for reconstructing the LoD1 are further elaborated in this study. However, due to the particular nature of Malaysian buildings and inaccurate point cloud classifications, automated height extrusion alone was found to be insufficient to achieve the typical recommended average rooftop height as the LoD1 height reference. Additionally, it was determined that the recommended height reference is also unsuitable for cadastre-based analysis and other beyond cadastre purposes in Malaysia. As a result, this paper will discuss the selection of the LoD1 height reference and suggest the approach to ensure accurate height extrusion of the LoD1 model can be met. Finally, it is hoped that this work will contribute to the body of knowledge by appropriately referencing their 3D models for analysis purposes and raising readers’ awareness of the SmartKADASTER application system.

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confidence: 87%

Implications of Automated Height Extrusion and the Selection of Height Reference for LoD 1 SmartKADASTER City Model

Halim

Abdullah

Karim

2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…The third approach is extending existing data models to cover all data requirements. For example, some studies extended IFC (Atazadeh, Kalantari, Rajabifard, Ho, et al, 2017;Atazadeh, Kalantari, Rajabifard, Ho, & Champion, 2017) and CityGML (Halim et al, 2021;Nega & Coors, 2022;Saeidian et al, 2023aSaeidian et al, , 2023bSiew et al, 2021) to create a 3D integrated data model and reported this as a viable approach to develop a 3D integrated model. Although these studies developed a 3D integrated data environment, they only considered physical and legal data without incorporating survey data elements into the developed integrated model.…”

Section: Current S Tandards For Modelling Underg Round S U Rv E Y Datamentioning

confidence: 99%

“…In this regard, a range of CityGML Application Domain Extensions (ADEs) has been developed in several domains (Biljecki et al, 2018). Some studies have also investigated and suggested CityGML for land administration purposes (Halim et al, 2021;Nega & Coors, 2022;Saeidian et al, 2023aSaeidian et al, , 2023bSiew et al, 2021). However, this data model does not support cadastral survey elements in the current version (CityGML 3.0) and the studies also ignored defining these elements in the proposed…”

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confidence: 99%

Modelling underground cadastral survey data in CityGML

Saeidian,

Rajabifard,

Atazadeh

et al. 2023

Transactions in GIS

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In underground environments, survey elements such as survey points and observations provide the information required to define legal boundaries. These elements are also used to connect underground legal spaces to a geodetic survey network. Due to the issues of current 2D approaches for managing underground cadastral data, prominent 3D data models have been extended to support underground land administration. However, previous studies mostly focused on defining underground legal spaces and boundaries, with less emphasis on survey elements. This research aims to extend CityGML to support underground cadastral survey data. The proposed extension is based on the survey elements elicited from underground cadastral plans, which is then implemented for an underground case study area in Melbourne, Australia. This extension integrates underground survey data with legal and physical data in a 3D digital environment and provides an improved representation of survey elements, facilitating the management and communication of underground cadastral survey data.

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3D modelling of subsurface legal spaces and boundaries for 3D land administration

Guler

2024

Tunnelling and Underground Space Technology

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Enhancing SmartKADASTER 3D City Model with Stratified Information in Supporting Smart City Enablement

Cited by 4 publications

References 12 publications

Implications of Automated Height Extrusion and the Selection of Height Reference for LoD 1 SmartKADASTER City Model

Implications of Automated Height Extrusion and the Selection of Height Reference for LoD 1 SmartKADASTER City Model

Modelling underground cadastral survey data in CityGML

3D modelling of subsurface legal spaces and boundaries for 3D land administration

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