UDMV: EG Workshop on Urban Data Modelling and Visualisation: Recent submissions

Now showing items 21-40 of 47

    • Combining Geometry, Topology and Semantics for Generic Building Description and Simulations 

      Horna, Sébastien; Damiand, Guillaume; Diakité, Abdoulaye; Meneveaux, Daniel (The Eurographics Association, 2015)
      2D and 3D virtual architectural models are the common ground of many studies, including environmental protection, energy saving, or human well-being. Building or urban environment simulations concern for instance heat ...

    • Automatic Semantic-preserving Conversion Between OBJ and CityGML 

      Biljecki, Filip; Arroyo Ohori, Ken (The Eurographics Association, 2015)
      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. ...

    • Representing Urban Phenomena in Their Context and at Different LoD: from Raw Data to Appropriate LoD 

      Pham, Ha; Ruas, A.; Libourel, T. (The Eurographics Association, 2015)
      More than half of the world population lives in cities today. This proportion rises to 80% in developed countries. The density of urban population causes environmental troubles such as noise, urban heat waves, and chemical ...

    • Dynamizers - Modeling and Implementing Dynamic Properties for Semantic 3D City Models 

      Chaturvedi, Kanishk; Kolbe, Thomas H. (The Eurographics Association, 2015)
      Today, more and more cities worldwide are realizing the importance of semantic 3D city models. Various application areas of 3D city models such as simulations require the usage of highly dynamic and time-varying attributes, ...

    • Conceptualizing, Managing and Developing: A Web Based 3D City Information Model for Urban Energy Demand Simulation 

      Padsala, Rushikesh; Coors, Volker (The Eurographics Association, 2015)
      In this paper we describe a concept to manage and develop a web based virtual 3D scene, based on CityGML LoD 2 models, DTM tiles, ortho-photos and energy simulation results of specific heating demand and photovoltaic ...

    • Far-LoD: Level of Detail for Massive Sky View Factor Calculations in Large Cities 

      Novoa, David Muñoz; Beckers, Benoit; Besuievsky, Gonzalo; Patow, Gustavo (The Eurographics Association, 2015)
      In many applications, such as in urban physical simulations or in the study of the effect of the solar impact at different scales, models with different levels of detail are required. In this paper we propose an efficient ...

    • Frontmatter: Eurographics Workshop on Urban Data Modelling and Visualisation 

      Biljecki, Filip; Tourre, Vincent (The Eurographics Association, 2015)

    • Applying Level-of-detail and Perceptive Effects to 3D Urban Semantics Visualization 

      Zhang, Fan; Tourre, Vincent; Moreau, Guillaume (The Eurographics Association, 2014)
      Urban environment consists of various types of data, both geometric ones and non-geometric ones, among which urban semantics are important sources for non-geometric data. The modelling and visualization of urban semantics ...

    • Incremental Plane-based Reconstruction and Exploration of Buildings in old Postcards 

      Younes, Lara; Romaniuk, Barbara; Bittar, Eric (The Eurographics Association, 2014)
      We present an approach for 3D reconstruction of a city model over the time from a collection of old postcards of the city of Reims. The planar structure of the buildings façades constraints the dense reconstruction of the ...

    • Managing Temporal Change of Cities with CityGML 

      Morel, Maxime; Gesquière, Gilles (The Eurographics Association, 2014)
      An increasing number of cities are developing digital models. It becomes thus necessary to take into account changes over time. Interoperability and thus the use of standards is also recommended. In this paper, we propose ...

    • Topological Reconstruction of Complex 3D Buildings and Automatic Extraction of Levels of Detail 

      Diakité, Abdoulaye A.; Damiand, Guillaume; Maercke, Dirk Van (The Eurographics Association, 2014)
      This paper describes a new method allowing to retrieve the indoor and outdoor topology of a detailed 3D building model from its geometry and to extract different levels of detail (LoD) from the resulting topological ...

    • Hierarchical Radiosity for Procedural Urban Environments 

      Roure, Ferran; Besuievsky, Gonzalo; Patow, Gustavo (The Eurographics Association, 2014)
      In this paper we present a novel solution for the computation of diffuse global illumination in urban environments that takes advantage of the underlying structure of the procedural building models used for generating the ...

    • Ground Temperature Modelling: The Case Study of Rue des Maraîchers in Geneva 

      Upadhyay, Govinda; Kämpf, Jérôme; Scartezzini, Jean Louis (The Eurographics Association, 2014)
      This paper presents a methodology to approximate the urban heat island effect by using a PostgreSQL database and CitySim software, a simulation tool to evaluate urban energy flows. A ground temperature model has been ...

    • A Configurable LoD for Procedural Urban Models intended for Daylight Simulation 

      Besuievsky, Gonzalo; Barroso, Santiago; Beckers, Benoit; Patow, Gustavo (The Eurographics Association, 2014)
      In many applications, such as in massive urban models visualization or in the study of the impact of urban simulation at different scales, models with different levels of detail are required. In this paper we propose a ...

    • Visualizing Street Orientation and Solar Radiation in Relation to Complex Topography 

      Mohajeri, Nahid; Gudmundsson, Agust; Kämpf, Jérôme H.; Scartezzini, Jean Louis (The Eurographics Association, 2014)
      Street networks can be visualized in various ways depending on the purpose. Here we introduce (in the present context) a new technique for visualizing the orientation of street networks in relation to complex topography. ...

    • Understanding City Dynamics through Spatio-temporal Visualization 

      Dias, Luís; Silva, Nelson; Cardoso, Tiago; Fonseca, Manuel J. (The Eurographics Association, 2013)
      Every time we visit a new city there is a huge effort made in understanding its dynamic, i.e. what are the relevant locations within that city in each time period, for there are large amounts of data to sift through. ...

    • Interactive Techniques for Populating Large Virtual Cities 

      Jordao, Kevin; Pettré, Julien; Cani, Marie-Paule (The Eurographics Association, 2013)
      For many applications, exploring empty virtual cities is not sufficient: streets and squares need to be populated by crowds of virtual humans. This position paper addresses the problem of generating such crowds when the ...

    • A General Strategy for Semantic Levels of Detail Visualization in Urban Environment 

      Zhang, Fan; Tourre, Vincent; Moreau, Guillaume (The Eurographics Association, 2013)
      Applications based on urban environments are applied frequently in daily life which increases the needs for a high quality visualization result. It combines the urban environment and the special application-related topic ...

    • Inverse-Procedural Methods for Urban Models 

      Musialski, Przemyslaw; Wimmer, Michael (The Eurographics Association, 2013)
      Procedural modeling is an elegant and fast way to generate huge complex and realistically looking urban sites. Due to its generative nature it can also be referred to as forward-procedural modeling. Its major drawback is ...

    • Challenges and Ideas in Procedural Modeling of Interiors 

      Ilcik, Martin; Wimmer, Michael (The Eurographics Association, 2013)
      While the creation of convincing cityscapes from the outside is already possible, there is a lack of robust and efficient techniques for modeling the interior of buildings. In particular, we focus on challenges for the ...