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Zlatanova, S. (author), Nourian Ghadikolaee, P. (author), Goncalves, R. (author), Vo, A.V. (author)Three-dimensional (3D) raster are simple representations, which have long been used for modelling continuous phenomena such as geological and medical objects. However, they can result in large data sets when high resolution is used, which poses challenges to algorithms for vector-to-raster conversion and data storage. This paper presents a...conference paper 2016
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- Tummers, L.C. (author) conference paper 2015
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Leonhardt, G. (author), Kuzniecow Bacchin, T. (author), Mair, M. (author), Zischg, J. (author), Ljung, S. (author), Rogers, B. (author), Goldkuhl, L. (author), Gustafsson, A. (author), Sitzenfrei, R. (author), Blecken, G. (author), Ashley, R. (author), Rauch, W. (author), van Timmeren, A. (author), Viklander, M. (author)The city of Kiruna in Northern Sweden has become known for the need to relocate major parts of the city. Current and future mining activities in the world’s largest underground iron ore mine are the cause of land subsidence that requires relocation of substantial parts of the town including its water infrastructure. Figure 1 shows the area...conference paper 2015
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- Van der Spek, S.C. (author) conference paper 2015
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Van Nes, A. (author), De Rooij, L. (author)There is a difference between registered safety and perceived safety. An inquiry was done to register how people use space in three different neighbourhoods from different time periods during a weekday. The following spatial parameters were taken into account: Axial and angular analyses with topological and metrical radiuses of the street and...conference paper 2015
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Makri, A. (author), Zlatanova, S. (author), Verbree, E. (author)This work presents an approach to enhance navigation in indoor environments based on a landmark concept. It has already been proved by empirical research that by using landmarks the wayfinding task can be significantly simplified. Navigation based on landmarks relies on the presence of landmarks at each point along a route where wayfinders might...conference paper 2015
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Rocco, Roberto (author), Ballegooien, J. (author)There has been a renewed interest in informal urbanization among urban thinkers in the last decades. In their contributions to the discourse on urban informality, we often find an overvaluation of informality’s positive aspects. The underlying argument is that governments and planners should ‘learn’ from informal settlements in the global south,...conference paper 2015
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Biljecki, F. (author), Arroyo Ohori, K. (author)We investigate the automatic conversion between two substantially different formats used in 3D city models: the ubiquitous but semantically poor Wavefront OBJ and the semantically rich but less used OGC standard CityGML. We elaborate on their differences and on the challenges involved in their conversion, such as the inference of semantics in an...conference paper 2015
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Peters, R. (author), Ledoux, H. (author), Biljecki, F. (author)Visibility analysis is an important application of 3D GIS data. Current approaches require 3D city models that are often derived from detailed aerial point clouds. We present an approach to visibility analysis that does not require a city model but works directly on the point cloud. Our approach is based on the medial axis transform, which...conference paper 2015
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Arroyo Ohori, G.A.K. (author), Ledoux, H. (author), Stoter, J.E. (author)3D city models of the same region at multiple LODs are encumbered by the lack of links between corresponding objects across LODs. In practice, this causes inconsistency during updates and maintenance problems. A radical solution to this problem is to model the LOD of a model as a dimension in the geometric sense, such that a set of connected...conference paper 2015
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Aarsen, R. (author), Janssen, M. (author), Ramkisoen, M. (author), Biljecki, F. (author), Quak, W. (author), Verbree, E. (author)In case of a calamity in the Netherlands - e.g. a dike breach - parts of the nationwide electric network can fall out. In these occasions it would be useful if decentralised energy sources of the Smart Grid would contribute to balance out the fluctuations of the energy network. Decentralised energy sources include: solar energy, wind energy,...conference paper 2015
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Zlatanova, S. (author), Sithole, G. (author), Nakagawa, M. (author), Zhu, Q. (author)Gi4DM 2015 marks the 10th edition of the Geoinformation for Disaster Management series of conferences. The first conference in 2005 was held in the aftermath of the 2004 Indian Ocean earthquake and tsunami which claimed the lives of over 220000 civilians. While Geoinformatics has a long been used in disaster management and monitoring, it was the...conference paper 2015
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Van Nes, A. (author), Aghabeik, L. (author)Little knowledge exists on the relationship between urban space and the behaviour pattern of various ethnical groups. For this purpose four different neighbourhoods with a high number of various ethnical groups were investigated in different time periods during a weekday. A difference was made between Europeans, Turkish, Moroccans, and...conference paper 2015
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Mohamed, A.A. (author), Van Nes, A. (author), Salheen, M.A. (author)Protests and revolts take place in public space. How they can be controlled or how protests develop depend on the physical layout of the built environment. This study reveals the relationship between urban space and protest for two Egyptian squares: Tahrir Square and Rabaa Al-Adawiya in Cairo. For analysis, the research uses space syntax method....conference paper 2015
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Lin, Y.T. (author)Recognizing that climate risk is a real threat to the environment and society, spatial planning plays a key role in developing adaptation policy responses as well as in integrating the territorial or spatial impacts of governmental sectoral policies. Planning for adaptation through policy intervention will speed up the implementation of climate...conference paper 2015
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Mohamed, A.A. (author), Van Nes, A. (author), Salheen, M.A. (author)The spatial layout of built environments influences the distribution of commercial activities. As literature has shown, commercial activities can enhance the process of urban consolidation of informal areas (Hillier et al, 2000; Shafiei, 2007). The purpose of this paper is to investigate the correlation between spatial factors and the...conference paper 2015
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Qu, L. (author), Fu, B. (author), Calabrese, L.M. (author)Greenway as landscaped, linear and multi-purpose component of urban planning has been increasingly used globally, especially in cities experiencing de-industrialization process. It has the potential to restructure city regions and improve connectivity of public spaces, making cities greener and friendlier to pedestrians and cyclists. There is no...conference paper 2015
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Calabrese, L.M. (author), Qu, L. (author), Van Faassen, W. (author)Resilient Urbanism is a broad concept that seeks to explore a wide spectrum of topics related to what makes resilience in urban contexts unique: spatial challenges, social and economic equity, climate change, density, mobility, governance, and other characteristics related to the unpredictable and ever-changing urban environment. It proposes a...conference paper 2015
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Xiong, Q. (author), Zhu, Q. (author), Zlatanova, S. (author), Du, Z. (author), Zhang, Y. (author), Zeng, L. (author)Indoor navigation is increasingly widespread in complex indoor environments, and indoor path planning is the most important part of indoor navigation. Path planning generally refers to finding the most suitable path connecting two locations, while avoiding collision with obstacles. However, it is a fundamental problem, especially for 3D complex...conference paper 2015
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Liu, L. (author), Xu, W. (author), Penard, W. (author), Zlatanova, S. (author)In this paper, we leverage spatial model to process indoor localization results and then improve the track consisting of measured locations. We elaborate different parts of spatial model such as geometry, topology and semantics, and then present how they contribute to the processing of indoor tracks. The initial results of our experiment reveal...conference paper 2015