designing and implementing a 3D indoor navigation web application

Sadidi, Javad; Judaki, Zahra; Rezayan, Hani

doi:10.29252/jsaeh.7.2.67

Cited by 3 publications

(2 citation statements)

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“…The 3D building model was created by drone point clouds. Point clouds have been utilised in many 3D city modelling research starting from data acquisition, modelling, and applications [29,30,31,32]. In this research, a simple building model is used to visualise the noise level of road traffic.…”

Section: Building Modelmentioning

confidence: 99%

3D Kriging interpolation for traffic noise visualization: designing noise observation points and valuation of spatial interpolation accuracy

Wickramathilaka,

Ujang

2023

IOP Conf. Ser.: Earth Environ. Sci.

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Identifying the risk of traffic noise is vital in minimizing traffic noise pollution in urban areas. As noise travels in every direction, 3D visualization of traffic noise is essential, which involves visualising traffic noise along the facades of buildings. A standard traffic noise model is necessary to calculate traffic noise levels, as several factors affect traffic noise. Moreover, designing noise observation points in 3D and spatial interpolation play significant roles in 3D noise visualisation. Therefore, this study demonstrates the results by elaborating on the spatial interpolation and designing noise observation points. A noise observation point consists of four parameters in 3D space. Generally, Inverse Distance Weighted (IDW), Triangular Irregular Network (TIN), and Kriging do not support the interpolation of four parameters in 3D. However, 3D Kriging in Empirical Bayesian Kriging provides significant opportunities to interpolate noise levels in 3D. However, the elements of the function of spatial interpolations are vital for accuracy. The 3D Kriging uses different variograms according to semivariance. This variogram directly impacts the weighting factor of 3D Kriging. Therefore, this study develops a comparison to identify the impact of different variograms on the accuracy of 3D Kriging interpolation on traffic noise.

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Section: Building Modelmentioning

confidence: 99%

3D Kriging interpolation for traffic noise visualization: designing noise observation points and valuation of spatial interpolation accuracy

Wickramathilaka,

Ujang

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…Numerous researchers have attempted on building modelling topic. Among them are threedimensional (3D) modelling of buildings to determine the effects of urban heat islands [7], sensor placement for smart city applications [8], [9], heritage building modelling [10], and disaster management [11]. Apart from modelling the building itself, analytical studies on the modelling of building are conducted, including the use of efficient structural data [12], [13], 3D spatial queries [14], [15], and the combination of 3D building modelling data formats [16].…”

Section: Introductionmentioning

confidence: 99%

Computational Fluid Dynamics of Wind Flow and Air Pollution Modelling: A Review on 3D Building Model Standards

Ridzuan

Ujang²,

Azri³

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Computational Fluid Dynamics (CFD) simulations are used to monitor air pollution events supported by real-world conditions digitally. Besides, wind flow that has a close relationship with air pollutants dispersion also can be visualized by using CFD simulation. The presence of a building, especially in terms of the building’s geometry, impacts the air pollution dispersion and wind flow that occur around a building or in a specific research area. As there is an involvement of building models in the simulation, some of the standards for the building modelling: Computer-Aided Design (CAD), City Geographic Markup Language (CityGML), and Building Information Modelling (BIM), are being utilized in this type of study. Many types of research have been conducted to study the pollutants and wind flow using the CFD technique of these three standards. Hence, this review paper is used to presents several pieces of research on this related topic. Through this review paper, some of the drawbacks of the study were identified, such as the detailing of the building’s geometry and the compatibility of each standard to be implemented in the CFD simulation.

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