UDMV13: Eurographics Workshop on Urban Data Modelling and Visualisation

Permanent URI for this collection

https://diglib7.eg.org/handle/10.2312/451

Online Reconstruction of Textured Triangle Meshes from Aerial Images

[meta data] [files:
001-004.pdf ,
vierjahn-roters-moser-hinrichs-mostafawy--additional.mp4
]
Vierjahn, Tom
; 
Roters, Jan
; 
Moser, Manuel
; 
Hinrichs, Klaus
; 
Mostafawy, Sina

NightLighting: a Nocturnal Urban Illumination Approach

[meta data] [files:
013-016.pdf
]
Muñoz-Pandiella, Imanol
; 
Andújar, Carlos
; 
Patow, Gustavo

Indoor Scene Reconstruction using Primitive-driven Space Partitioning and Graph-cut

[meta data] [files:
009-012.pdf
]
Oesau, Sven
; 
Lafarge, Florent
; 
Alliez, Pierre

Toward Automated Façades Generation from Oblique Aerial Images

[meta data] [files:
005-008.pdf
]
Vahl, Matthias
; 
Lukas, Uwe von

Taking Advantage of Low Radiative Coupling in 3D Urban Models

[meta data] [files:
017-020.pdf
]
Beckers, Benoit

Challenges in Procedural Modeling of Buildings

[meta data] [files:
025-028.pdf
]
Patow, Gustavo
; 
Besuievsky, Gonzalo

Dual-Domain Visual Exploration of Urban Solar Potential

[meta data] [files:
021-024.pdf
]
Seipel, Stefan
; 
Lingfors, David
; 
Widén, Joakim

Inverse-Procedural Methods for Urban Models

[meta data] [files:
031-032.pdf
]
Musialski, Przemyslaw
; 
Wimmer, Michael

Challenges and Ideas in Procedural Modeling of Interiors

[meta data] [files:
029-030.pdf
]
Ilcik, Martin
; 
Wimmer, Michael

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

[meta data] [files:
033-036.pdf
]
Zhang, Fan
; 
Tourre, Vincent
; 
Moreau, Guillaume

Interactive Techniques for Populating Large Virtual Cities

[meta data] [files:
041-042.pdf
]
Jordao, Kevin
; 
Pettré, Julien
; 
Cani, Marie-Paule

Understanding City Dynamics through Spatio-temporal Visualization

[meta data] [files:
037-040.pdf ,
collecta-1min.mp4 ,
large-images-png.zip
]
Dias, Luís
; 
Silva, Nelson
; 
Cardoso, Tiago
; 
Fonseca, Manuel J.

BibTeX (UDMV13: Eurographics Workshop on Urban Data Modelling and Visualisation)
@inproceedings{
10.2312:UDMV/UDMV13/001-004,

booktitle = {
Eurographics Workshop on Urban Data Modelling and Visualisation},

editor = {
Vincent Tourre and Gonzalo Besuievsky
},
title = {{
Online Reconstruction of Textured Triangle Meshes from Aerial Images}},

author = {
Vierjahn, Tom
 and 
Roters, Jan
 and 
Moser, Manuel
 and 
Hinrichs, Klaus
 and 
Mostafawy, Sina
},
year = {
2013},

publisher = {
The Eurographics Association},


ISSN = {2307-8251},
ISBN = {978-3-905674-46-0},

DOI = {
10.2312/UDMV/UDMV13/001-004}

}
@inproceedings{
10.2312:UDMV/UDMV13/013-016,

booktitle = {
Eurographics Workshop on Urban Data Modelling and Visualisation},

editor = {
Vincent Tourre and Gonzalo Besuievsky
},
title = {{
NightLighting: a Nocturnal Urban Illumination Approach}},

author = {
Muñoz-Pandiella, Imanol
 and 
Andújar, Carlos
 and 
Patow, Gustavo
},
year = {
2013},

publisher = {
The Eurographics Association},


ISSN = {2307-8251},
ISBN = {978-3-905674-46-0},

DOI = {
10.2312/UDMV/UDMV13/013-016}

}
@inproceedings{
10.2312:UDMV/UDMV13/009-012,

booktitle = {
Eurographics Workshop on Urban Data Modelling and Visualisation},

editor = {
Vincent Tourre and Gonzalo Besuievsky
},
title = {{
Indoor Scene Reconstruction using Primitive-driven Space Partitioning and Graph-cut}},

author = {
Oesau, Sven
 and 
Lafarge, Florent
 and 
Alliez, Pierre
},
year = {
2013},

publisher = {
The Eurographics Association},


ISSN = {2307-8251},
ISBN = {978-3-905674-46-0},

DOI = {
10.2312/UDMV/UDMV13/009-012}

}
@inproceedings{
10.2312:UDMV/UDMV13/005-008,

booktitle = {
Eurographics Workshop on Urban Data Modelling and Visualisation},

editor = {
Vincent Tourre and Gonzalo Besuievsky
},
title = {{
Toward Automated Façades Generation from Oblique Aerial Images}},

author = {
Vahl, Matthias
 and 
Lukas, Uwe von
},
year = {
2013},

publisher = {
The Eurographics Association},


ISSN = {2307-8251},
ISBN = {978-3-905674-46-0},

DOI = {
10.2312/UDMV/UDMV13/005-008}

}
@inproceedings{
10.2312:UDMV/UDMV13/017-020,

booktitle = {
Eurographics Workshop on Urban Data Modelling and Visualisation},

editor = {
Vincent Tourre and Gonzalo Besuievsky
},
title = {{
Taking Advantage of Low Radiative Coupling in 3D Urban Models}},

author = {
Beckers, Benoit
},
year = {
2013},

publisher = {
The Eurographics Association},


ISSN = {2307-8251},
ISBN = {978-3-905674-46-0},

DOI = {
10.2312/UDMV/UDMV13/017-020}

}
@inproceedings{
10.2312:UDMV/UDMV13/025-028,

booktitle = {
Eurographics Workshop on Urban Data Modelling and Visualisation},

editor = {
Vincent Tourre and Gonzalo Besuievsky
},
title = {{
Challenges in Procedural Modeling of Buildings}},

author = {
Patow, Gustavo
 and 
Besuievsky, Gonzalo
},
year = {
2013},

publisher = {
The Eurographics Association},


ISSN = {2307-8251},
ISBN = {978-3-905674-46-0},

DOI = {
10.2312/UDMV/UDMV13/025-028}

}
@inproceedings{
10.2312:UDMV/UDMV13/021-024,

booktitle = {
Eurographics Workshop on Urban Data Modelling and Visualisation},

editor = {
Vincent Tourre and Gonzalo Besuievsky
},
title = {{
Dual-Domain Visual Exploration of Urban Solar Potential}},

author = {
Seipel, Stefan
 and 
Lingfors, David
 and 
Widén, Joakim
},
year = {
2013},

publisher = {
The Eurographics Association},


ISSN = {2307-8251},
ISBN = {978-3-905674-46-0},

DOI = {
10.2312/UDMV/UDMV13/021-024}

}
@inproceedings{
10.2312:UDMV/UDMV13/031-032,

booktitle = {
Eurographics Workshop on Urban Data Modelling and Visualisation},

editor = {
Vincent Tourre and Gonzalo Besuievsky
},
title = {{
Inverse-Procedural Methods for Urban Models}},

author = {
Musialski, Przemyslaw
 and 
Wimmer, Michael
},
year = {
2013},

publisher = {
The Eurographics Association},


ISSN = {2307-8251},
ISBN = {978-3-905674-46-0},

DOI = {
10.2312/UDMV/UDMV13/031-032}

}
@inproceedings{
10.2312:UDMV/UDMV13/029-030,

booktitle = {
Eurographics Workshop on Urban Data Modelling and Visualisation},

editor = {
Vincent Tourre and Gonzalo Besuievsky
},
title = {{
Challenges and Ideas in Procedural Modeling of Interiors}},

author = {
Ilcik, Martin
 and 
Wimmer, Michael
},
year = {
2013},

publisher = {
The Eurographics Association},


ISSN = {2307-8251},
ISBN = {978-3-905674-46-0},

DOI = {
10.2312/UDMV/UDMV13/029-030}

}
@inproceedings{
10.2312:UDMV/UDMV13/033-036,

booktitle = {
Eurographics Workshop on Urban Data Modelling and Visualisation},

editor = {
Vincent Tourre and Gonzalo Besuievsky
},
title = {{
A General Strategy for Semantic Levels of Detail Visualization in Urban Environment}},

author = {
Zhang, Fan
 and 
Tourre, Vincent
 and 
Moreau, Guillaume
},
year = {
2013},

publisher = {
The Eurographics Association},


ISSN = {2307-8251},
ISBN = {978-3-905674-46-0},

DOI = {
10.2312/UDMV/UDMV13/033-036}

}
@inproceedings{
10.2312:UDMV/UDMV13/041-042,

booktitle = {
Eurographics Workshop on Urban Data Modelling and Visualisation},

editor = {
Vincent Tourre and Gonzalo Besuievsky
},
title = {{
Interactive Techniques for Populating Large Virtual Cities}},

author = {
Jordao, Kevin
 and 
Pettré, Julien
 and 
Cani, Marie-Paule
},
year = {
2013},

publisher = {
The Eurographics Association},


ISSN = {2307-8251},
ISBN = {978-3-905674-46-0},

DOI = {
10.2312/UDMV/UDMV13/041-042}

}
@inproceedings{
10.2312:UDMV/UDMV13/037-040,

booktitle = {
Eurographics Workshop on Urban Data Modelling and Visualisation},

editor = {
Vincent Tourre and Gonzalo Besuievsky
},
title = {{
Understanding City Dynamics through Spatio-temporal Visualization}},

author = {
Dias, Luís
 and 
Silva, Nelson
 and 
Cardoso, Tiago
 and 
Fonseca, Manuel J.
},
year = {
2013},

publisher = {
The Eurographics Association},


ISSN = {2307-8251},
ISBN = {978-3-905674-46-0},

DOI = {
10.2312/UDMV/UDMV13/037-040}

}

Browse

Recent Submissions

Now showing 1 - 12 of 12
  • Thumbnail Image
    Item
    Online Reconstruction of Textured Triangle Meshes from Aerial Images
    (The Eurographics Association, 2013) Vierjahn, Tom; Roters, Jan; Moser, Manuel; Hinrichs, Klaus; Mostafawy, Sina; Vincent Tourre and Gonzalo Besuievsky
    In this paper we present and evaluate a new online reconstruction algorithm to create a textured triangle mesh from a set of aerial images via an unorganized point cloud. Both the point cloud and the mesh are iteratively refined while allowing new aerial images to be added at any time during reconstruction. Texture coordinates are learnt to instantly visualize an initially rough approximation that gets refined as more data becomes available. The new algorithm improves upon other systems that require the complete data to be acquired beforehand, and that apply offline, non-iterative reconstruction and processing. Thus, our algorithm is perfectly suited for time-critical applications, e. g., strategical visualization platforms for disaster and emergency response.
  • Thumbnail Image
    Item
    NightLighting: a Nocturnal Urban Illumination Approach
    (The Eurographics Association, 2013) Muñoz-Pandiella, Imanol; Andújar, Carlos; Patow, Gustavo; Vincent Tourre and Gonzalo Besuievsky
    Real time rendering of cities with realistic global illumination is still an open problem. In this paper we propose a two-step algorithm to simulate the nocturnal illumination of a city. The first step computes an approximate aerial solution using simple textured quads for each street light. The second step uses photon mapping to locally compute the global illumination coming from light sources close to the viewer. Then, we transfer the local, highquality solution to the low resolution buffers used for aerial views, refining it with accurate information from the local simulation. Our approach achieves real time frame rates in commodity hardware.
  • Thumbnail Image
    Item
    Indoor Scene Reconstruction using Primitive-driven Space Partitioning and Graph-cut
    (The Eurographics Association, 2013) Oesau, Sven; Lafarge, Florent; Alliez, Pierre; Vincent Tourre and Gonzalo Besuievsky
    We present a method for automatic reconstruction of permanent structures of indoor scenes, such as walls, floors and ceilings, from raw point clouds acquired by laser scanners. Our approach employs graph-cut to solve an inside/outside labeling of a space decomposition. To allow for an accurate reconstruction the space decomposition is aligned with permanent structures. A Hough Transform is applied for extracting the wall directions while allowing a flexible reconstruction of scenes. The graph-cut formulation takes into account data consistency through an inside/outside prediction for the cells of the space decomposition by stochastic ray casting, while favoring low geometric complexity of the model. Our experiments produces watertight reconstructed models of multi-level buildings and complex scenes.
  • Thumbnail Image
    Item
    Toward Automated Façades Generation from Oblique Aerial Images
    (The Eurographics Association, 2013) Vahl, Matthias; Lukas, Uwe von; Vincent Tourre and Gonzalo Besuievsky
    In this paper we introduce an approach for automatic recognition and description of building façades from oblique aerial images. This approach does not use street-side images, like Google StreetView, but aerial images to derive photorealistic city models. The paper starts with a short summary of the state of the art in the domain of imagebased modeling, automated recognition and description of façades from (oblique aerial) images. Then the context of the research project is described including the hardware setup and and application requirements for complex façade analysis. Afterwards a novel approach of a grid graph model with traversers is suggested to solve the problem of façade recognition. The framework that implements the approach in a flexible manner is introduced. Finally, the paper ends with a conclusion and an outlook to future works.
  • Thumbnail Image
    Item
    Taking Advantage of Low Radiative Coupling in 3D Urban Models
    (The Eurographics Association, 2013) Beckers, Benoit; Vincent Tourre and Gonzalo Besuievsky
    We examine different techniques able to enhance the efficiency of urban simulations. Condensation techniques like superelements - well known in the finite element community - are good candidates to improve the heat transfers simulations inside the city. Three typical situations are examined. In the first one, concerned with the interaction of inside and outside scenes through windows, the two problems can be analyzed successively. The second situation presents a weak coupling of radiation between built settings. The last one refers to the full radiative budget of a city; it is used to illustrate the possibility of applying superelement techniques to the linear part of the problem. The conclusion is that these techniques are able to help enhancing the efficiency of the simulations.
  • Thumbnail Image
    Item
    Challenges in Procedural Modeling of Buildings
    (The Eurographics Association, 2013) Patow, Gustavo; Besuievsky, Gonzalo; Vincent Tourre and Gonzalo Besuievsky
    The use of procedural modeling for building generation has risen dramatically over the last years, being an elegant and fast way to generate huge, complex and realistically looking urban sites. However, due to its generative nature there are still unsolved problems that limits they usage. In this paper we report on the challenges still pending on procedural modeling of buildings. We provide a state of the art on most recent solution and we draw possible research avenue that could be taken for spreading the use of procedural modeling in current applications.
  • Thumbnail Image
    Item
    Dual-Domain Visual Exploration of Urban Solar Potential
    (The Eurographics Association, 2013) Seipel, Stefan; Lingfors, David; Widén, Joakim; Vincent Tourre and Gonzalo Besuievsky
    Traditional methods for estimating the solar energy potential in buildings determine energy yields on an annual base and make use of highly aggregated geo-spatial data. This work proposes a method for detailed assessment of the potential solar energy yield in the temporal and spatial domain. Solar irradiance is evaluated using numerical methods based on hourly variation of solar irradiance and on actual building geometry. Results of our initial studies allow exploration of the variation patterns in solar yield depending on local and time-varying factors, which cannot be seen in coarse level solar planning tools. This helps identifying surfaces with good solar yield that are deemed unfavorable according to traditional planning practices.
  • Thumbnail Image
    Item
    Inverse-Procedural Methods for Urban Models
    (The Eurographics Association, 2013) Musialski, Przemyslaw; Wimmer, Michael; Vincent Tourre and Gonzalo Besuievsky
    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 the usually quite complicated way of control. To overcome this difficulty a novel modeling paradigm has been introduced: it is commonly referred to as inverse procedural modeling, and its goal is to generate compact procedural descriptions of existing models-in the best case in an automatic manner as possible. These compact procedural representations can be used as a source for the synthesis of identical or similar objects, applied in various simulations and other studies of urban environments. We believe that this technology is still a widely unexplored ground and that it will prove itself as a very important tool in the reconstruction process. In this paper we sketch how inverse procedural modeling can be applied in the urban modeling field.
  • Thumbnail Image
    Item
    Challenges and Ideas in Procedural Modeling of Interiors
    (The Eurographics Association, 2013) Ilcik, Martin; Wimmer, Michael; Vincent Tourre and Gonzalo Besuievsky
    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 subdivision of the interior space into rooms and for placement of furniture in those rooms.
  • Thumbnail Image
    Item
    A General Strategy for Semantic Levels of Detail Visualization in Urban Environment
    (The Eurographics Association, 2013) Zhang, Fan; Tourre, Vincent; Moreau, Guillaume; Vincent Tourre and Gonzalo Besuievsky
    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 together. The urban environment can be visualized with different scales, namely with different levels of detail to improve rendering and processing performance of the application. Visualization for the special topic, semantics, similarly is in need of a smart strategy to stay consistent with information density. This paper proposes a general strategy to handle semantic levels of detail visualization in urban environment. An example is given to illustrate how it is applied. Later, a mapping between urban environment levels of detail and semantic levels of detail is discussed. In the last part, the limitations of the general strategy are stated. And visualization issues for semantics are listed such as the proper visualization form and technique for a given semantic level of detail. This paper aims to bring about a wider discussion on semantic levels of detail visualization in urban environment.
  • Thumbnail Image
    Item
    Interactive Techniques for Populating Large Virtual Cities
    (The Eurographics Association, 2013) Jordao, Kevin; Pettré, Julien; Cani, Marie-Paule; Vincent Tourre and Gonzalo Besuievsky
    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 scale of the city prevents the use of standard simulation methods. We first present the concept of crowd patches and review their advantages and drawbacks for animating large crowds of people. We then discuss the goals of our future work, namely being able to interactively design such large populations.
  • Thumbnail Image
    Item
    Understanding City Dynamics through Spatio-temporal Visualization
    (The Eurographics Association, 2013) Dias, Luís; Silva, Nelson; Cardoso, Tiago; Fonseca, Manuel J.; Vincent Tourre and Gonzalo Besuievsky
    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. Although several attempts have been made to combine information from various sources, the majority focus on geographic data, lacking on time representation. In this paper we describe and evaluate three representation approaches for spatiotemporal data, to understand which is better to convey the dynamics of a city at a glance. We devised 2D and 3D visualizations to understand their adequacy to our objectives. Based on the results from the evaluation with users we noticed that they preferred the 2D visualization of the data, but on the other hand there was no significant difference to the 3D representation.