Posters

Permanent URI for this collection

https://diglib.eg.org/handle/10.2312/297

Revision Control Framework for 3D Assets

[meta data] [files:
001-002.pdf ,
poster-portrait.pdf
]
Dobos, Jozef
; 
Steed, Anthony

Combining Texture Streaming and Run-Time Generation

[meta data] [files:
003-004.pdf
]
Demeulemeester, Aljosha
; 
Hollemeersch, Charles-Frederik
; 
Pieters, Bart
; 
Lambert, Peter
; 
Walle, Rik Van de

Virtual Architecture in the Free Space

[meta data] [files:
005-006.pdf ,
clini_quattrini_nespeca.tif ,
video_compresso.wmv
]
Clini, Paolo
; 
Quattrini, Ramona
; 
Nespeca, Romina

Interactive Insertion of Virtual Objects in Photos and Videos

[meta data] [files:
007-008.pdf ,
poster-final.pdf ,
eurographics[mp4].mp4
]
Nóbrega, Rui
; 
Correia, Nuno

On User-Interaction in 3D Reconstruction

[meta data] [files:
013-014.pdf
]
Schneider, David C.
; 
Eisert, Peter

Efficient Point Based Global Illumination on GPU

[meta data] [files:
017-018.pdf
]
Wang, Beibei
; 
Xu, Zhen
; 
Xu, Yanning
; 
Meng, Xiangxu

A New Approach to Cultural Heritage Information Systems

[meta data] [files:
011-012.pdf
]
Soler, Francisco
; 
Torres, Juan Carlos
; 
Cano, Pedro
; 
León, Alejandro

Exploration of 3D Spectroscopy Data

[meta data] [files:
015-016.pdf
]
Romo, Celia
; 
Torres, Juan Carlos
; 
León, Alejandro J.

A Pipeline for Procedural Modelling from Geospatial Data

[meta data] [files:
009-010.pdf
]
Jesus, Diego
; 
Coelho, António
; 
Rebelo, C.
; 
Cardoso, A.
; 
Sousa, A. A.

Automatic Alignment of Shape Collections

[meta data] [files:
019-020.pdf
]
Averkiou, Melinos
; 
Mitra, Niloy

Meshless Statistical Occlusion Computation

[meta data] [files:
023-024.pdf
]
Fouquet, François
; 
Farrugia, Jean-Philippe
; 
Iehl, Jean-Claude
; 
Dupuy, Jonathan

Digital Archiving of Large 3D Woven Cultural Artifacts

[meta data] [files:
021-022.pdf
]
Wakita, Wataru
; 
Tanaka, Hiromi T.

Minimising Longest Edge for Closed Surface Construction from Unorganised 3D Point Sets

[meta data] [files:
025-026.pdf ,
poster4021_finalelec.pdf
]
Ohrhallinger, Stefan
; 
Mudur, Sudhir

Multi-user Immersive 3D Reconstruction Environment

[meta data] [files:
027-028.pdf ,
poster_eg2012_stz_v02_submited_a4.png
]
Sedlacek, David
; 
Travnicek, Zdenek
; 
Zara, Jiri

Combining Structure from Motion and Photometric Stereo: A Piecewise Formulation

[meta data] [files:
033-034.pdf
]
Sabzevari, Reza
; 
Bue, Alessio Del
; 
Murino, Vittorio

Multiview-Consistent Color Sampling for Alpha Matting

[meta data] [files:
031-032.pdf
]
Kettern, Markus
; 
Eisert, Peter

GPU Texture Level of Abstraction in 3D Scenes

[meta data] [files:
029-030.pdf ,
process.png ,
repeat.png ,
scene_segm.png
]
Suarez, Jordane
; 
Belhadj, Farès
; 
Boyer, Vincent

Joint Interactive Visualization of 3D Models and Pictures in Walkable Scenes

[meta data] [files:
035-037.pdf ,
projcolor_final.avi
]
Brivio, Paolo
; 
Tarini, Marco
; 
Cignoni, Paolo
; 
Scopigno, Roberto

Realtime 3D Sensor Based Air Flow Reconstruction

[meta data] [files:
041-042.pdf
]
Dyck, Michiel Van
; 
Peremans, Herbert

Consistent Media Model for Real-Time Scene Rendering

[meta data] [files:
039-040.pdf ,
20120210_medialib_x2a.avi
]
Belhadj, Farès
; 
Suarez, Jordane
; 
Boyer, Vincent

BibTeX (Posters)
@inproceedings{
:10.2312/conf/EG2012/posters/001-002,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
Revision Control Framework for 3D Assets}},

author = {
Dobos, Jozef
 and 
Steed, Anthony
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/001-002}

}
@inproceedings{
:10.2312/conf/EG2012/posters/003-004,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
Combining Texture Streaming and Run-Time Generation}},

author = {
Demeulemeester, Aljosha
 and 
Hollemeersch, Charles-Frederik
 and 
Pieters, Bart
 and 
Lambert, Peter
 and 
Walle, Rik Van de
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/003-004}

}
@inproceedings{
:10.2312/conf/EG2012/posters/005-006,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
Virtual Architecture in the Free Space}},

author = {
Clini, Paolo
 and 
Quattrini, Ramona
 and 
Nespeca, Romina
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/005-006}

}
@inproceedings{
:10.2312/conf/EG2012/posters/007-008,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
Interactive Insertion of Virtual Objects in Photos and Videos}},

author = {
Nóbrega, Rui
 and 
Correia, Nuno
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/007-008}

}
@inproceedings{
:10.2312/conf/EG2012/posters/013-014,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
On User-Interaction in 3D Reconstruction}},

author = {
Schneider, David C.
 and 
Eisert, Peter
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/013-014}

}
@inproceedings{
:10.2312/conf/EG2012/posters/017-018,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
Efficient Point Based Global Illumination on GPU}},

author = {
Wang, Beibei
 and 
Xu, Zhen
 and 
Xu, Yanning
 and 
Meng, Xiangxu
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/017-018}

}
@inproceedings{
:10.2312/conf/EG2012/posters/011-012,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
A New Approach to Cultural Heritage Information Systems}},

author = {
Soler, Francisco
 and 
Torres,  Juan Carlos
 and 
Cano,  Pedro
 and 
León,  Alejandro
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/011-012}

}
@inproceedings{
:10.2312/conf/EG2012/posters/015-016,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
Exploration of 3D Spectroscopy Data}},

author = {
Romo, Celia
 and 
Torres, Juan Carlos
 and 
León, Alejandro J.
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/015-016}

}
@inproceedings{
:10.2312/conf/EG2012/posters/009-010,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
A Pipeline for Procedural Modelling from Geospatial Data}},

author = {
Jesus, Diego
 and 
Coelho,  António
 and 
Rebelo, C.
 and 
Cardoso, A.
 and 
Sousa, A. A.
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/009-010}

}
@inproceedings{
:10.2312/conf/EG2012/posters/019-020,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
Automatic Alignment of Shape Collections}},

author = {
Averkiou, Melinos
 and 
Mitra, Niloy
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/019-020}

}
@inproceedings{
:10.2312/conf/EG2012/posters/023-024,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
Meshless Statistical Occlusion Computation}},

author = {
Fouquet, François
 and 
Farrugia, Jean-Philippe
 and 
Iehl, Jean-Claude
 and 
Dupuy, Jonathan
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/023-024}

}
@inproceedings{
:10.2312/conf/EG2012/posters/021-022,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
Digital Archiving of Large 3D Woven Cultural Artifacts}},

author = {
Wakita, Wataru
 and 
Tanaka,  Hiromi T.
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/021-022}

}
@inproceedings{
:10.2312/conf/EG2012/posters/025-026,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
Minimising Longest Edge for Closed Surface Construction from Unorganised 3D Point Sets}},

author = {
Ohrhallinger, Stefan
 and 
Mudur, Sudhir
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/025-026}

}
@inproceedings{
:10.2312/conf/EG2012/posters/027-028,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
Multi-user Immersive 3D Reconstruction Environment}},

author = {
Sedlacek, David
 and 
Travnicek, Zdenek
 and 
Zara, Jiri
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/027-028}

}
@inproceedings{
:10.2312/conf/EG2012/posters/033-034,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
Combining Structure from Motion and Photometric Stereo: A Piecewise Formulation}},

author = {
Sabzevari, Reza
 and 
Bue, Alessio Del
 and 
Murino, Vittorio
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/033-034}

}
@inproceedings{
:10.2312/conf/EG2012/posters/031-032,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
Multiview-Consistent Color Sampling for Alpha Matting}},

author = {
Kettern, Markus
 and 
Eisert, Peter
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/031-032}

}
@inproceedings{
:10.2312/conf/EG2012/posters/029-030,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
GPU Texture Level of Abstraction in 3D Scenes}},

author = {
Suarez, Jordane
 and 
Belhadj, Farès
 and 
Boyer, Vincent
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/029-030}

}
@inproceedings{
:10.2312/conf/EG2012/posters/035-037,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
Joint Interactive Visualization of 3D Models and Pictures in Walkable Scenes}},

author = {
Brivio, Paolo
 and 
Tarini, Marco
 and 
Cignoni, Paolo
 and 
Scopigno, Roberto
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/035-037}

}
@inproceedings{
:10.2312/conf/EG2012/posters/041-042,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
Realtime 3D Sensor Based Air Flow Reconstruction}},

author = {
Dyck, Michiel Van
 and 
Peremans,  Herbert
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/041-042}

}
@inproceedings{
:10.2312/conf/EG2012/posters/039-040,

booktitle = {
Eurographics 2012 - Posters},

editor = {
Andrea Fusiello and Michael Wimmer
},
title = {{
Consistent Media Model for Real-Time Scene Rendering}},

author = {
Belhadj, Farès
 and 
Suarez, Jordane
 and 
Boyer, Vincent
},
year = {
2012},

publisher = {
The Eurographics Association},


ISSN = {1017-4656},

DOI = {
/10.2312/conf/EG2012/posters/039-040}

}

Browse

Recent Submissions

Now showing 1 - 20 of 20
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    Revision Control Framework for 3D Assets
    (The Eurographics Association, 2012) Dobos, Jozef; Steed, Anthony; Andrea Fusiello and Michael Wimmer
    We propose a non-linear concurrent revision control for centralised management of 3D assets and a novel approach to mesh differencing. Large models are decomposed into individual scene graph (SG) nodes through an asset import library and become versioned as collections of polymorphic documents in a NoSQL database (DB). Well-known operations such as 2- and 3-way diff and merging are supported via a custom DB front-end. By not relying on the knowledge of user edits, we make sure our system works with a range of editing software. We demonstrate the feasibility of our proposal on concurrent 3D editing and conflict resolution.
  • Thumbnail Image
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    Combining Texture Streaming and Run-Time Generation
    (The Eurographics Association, 2012) Demeulemeester, Aljosha; Hollemeersch, Charles-Frederik; Pieters, Bart; Lambert, Peter; Walle, Rik Van de; Andrea Fusiello and Michael Wimmer
    Virtual texturing systems have enabled gigapixel resolutions for textures used in real-time rendering. This allows for more detail and diversity in virtual worlds at the cost of greatly increasing disc storage requirements. In this paper, we propose a compression method that generates parts of these large textures at run-time using the original painting primitives (brushes) from the texture production process. This way, large featureless texture areas can be compressed to a few brush resources. A post-production analyzing phase determines those areas that should be stored as compressed texel data to ensure real-time performance at run-time.
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    Virtual Architecture in the Free Space
    (The Eurographics Association, 2012) Clini, Paolo; Quattrini, Ramona; Nespeca, Romina; Andrea Fusiello and Michael Wimmer
    The multi-projection image techniques offer interesting possibilities for architecture communication and augmented reality. This poster shows experimental solutions for pseudo-holographic projection 360 degree so-called "holographic bell", and projection screen. The more intense research regarding the technical and technological possibilities and the materials of the semi-reflecting plates is being carried out in the EARCOM laboratory of DICEA of Univpm in Ancona. The main goal is to design a good container, ensuring that the content is predominant: low-cost bells, with the maximum projection surface and minimizing the structure.
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    Interactive Insertion of Virtual Objects in Photos and Videos
    (The Eurographics Association, 2012) Nóbrega, Rui; Correia, Nuno; Andrea Fusiello and Michael Wimmer
    The introduction of virtual objects in photos or videos has been the focus of many Augmented Reality applications. This paper proposes a framework using image analysis methods to automatically detect scene features to introduce virtual 3D geometry objects. The current high-level features include surfaces, depth and scene orientation automatic detection. The main use of this technology is in AR tools, games or applications, which require the user to introduce an object that blends with a photographed or filmed scene. The main advantage of the proposed approach is that it can work only with one or two photos without prior knowledge, being ideal for mobile applications with camera or to be used with photo albums. Additional sensors can be added to increase reliability such as depth sensors or accelerometers but they are not essential. The main algorithms are intended to create a scene model in a few seconds and allow an interactive behaviour of the augmented objects.
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    On User-Interaction in 3D Reconstruction
    (The Eurographics Association, 2012) Schneider, David C.; Eisert, Peter; Andrea Fusiello and Michael Wimmer
    For many computer graphics tasks such as segmentation, tracking or retargeting, algorithms are designed to allow user interaction. For real-world applications, tools which give users some form of control are often preferred over fully automatic ones. In 3D reconstruction, however, algorithms are typically non-interactive and errors are corrected after reconstruction in generic 3D modeling software. In this contribution, we discuss fundamental algorithmic considerations regarding interactivity in 3D reconstruction and we outline an optimization-based reconstruction framework which allows the incorporation of interactive tools as energy terms.
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    Efficient Point Based Global Illumination on GPU
    (The Eurographics Association, 2012) Wang, Beibei; Xu, Zhen; Xu, Yanning; Meng, Xiangxu; Andrea Fusiello and Michael Wimmer
    Point based rendering can simulate global illumination phenomenon fast and is widely used in movie production. This paper proposes a point based color bleeding algorithm based on GPU efficiently. In our algorithm, we reorder the shading points according to the similarity of them to use the coherency of the GPU memory. Then, we propose a novel idea named chunking to accelerate the point cloud traversal process by using the constant memory of GPU.
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    A New Approach to Cultural Heritage Information Systems
    (The Eurographics Association, 2012) Soler, Francisco; Torres, Juan Carlos; Cano, Pedro; León, Alejandro; Andrea Fusiello and Michael Wimmer
    Work on archaeological sites or cultural heritage artefacts usually generates a huge amount of heterogeneous information. The strong spatial structure of data suggests that this information should be linked to a threedimensional model of the artefact. This paper presents a new approach to the representation and management of information in the Cultural Heritage field. We propose a method for associating attributes with a 3D model using information layers, following an approach similar to that used in Geographical Information Systems.
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    Exploration of 3D Spectroscopy Data
    (The Eurographics Association, 2012) Romo, Celia; Torres, Juan Carlos; León, Alejandro J.; Andrea Fusiello and Michael Wimmer
    Integral field spectroscopy (IFS) is a technique that is widely used by astrophysics. It allows the whole electromagnetic spectrum for each pixel of a telescope image to be captured, generating a large amount of information. Visualizing and exploring this information in a flexible and an intuitive way is a challenge. This paper presents an interactive method to explore IFS data.
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    A Pipeline for Procedural Modelling from Geospatial Data
    (The Eurographics Association, 2012) Jesus, Diego; Coelho, António; Rebelo, C.; Cardoso, A.; Sousa, A. A.; Andrea Fusiello and Michael Wimmer
    Virtual urban environments can be used for purposes like municipality planning and management. Due to the complexity and large extent of these environments procedural modelling techniques can be used to generate these 3D environments automatically. However these methods need large amounts of spatial data, that is generally available through Geographic Information Systems (GIS). This paper presents a pipeline to integrate semantics and GIS data into the procedural modelling techniques used to recreate virtual urban environments. GIS data can already be used in procedural modelling tools but it does not incorporate semantic information. As such, this pipeline is capable of transforming semantic and geometric data contained in GIS into three dimensional models that represent such urban spaces.
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    Automatic Alignment of Shape Collections
    (The Eurographics Association, 2012) Averkiou, Melinos; Mitra, Niloy; Andrea Fusiello and Michael Wimmer
    We present a method for automatically aligning a collection of similar shapes in arbitrary initial poses. By analyzing the shape collection we extract a deformation model to capture the variability in the collection. We use this information to deform an extracted template shape and use it to align pairs of shapes by direct PCA alignment. We evaluate our method on synthetically created model collections in arbitrary initial poses and demonstrate accurate results with near ground truth alignment. Our algorithm significantly outperforms existing direct PCA alignment methods, without significant computational overhead.
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    Meshless Statistical Occlusion Computation
    (The Eurographics Association, 2012) Fouquet, François; Farrugia, Jean-Philippe; Iehl, Jean-Claude; Dupuy, Jonathan; Andrea Fusiello and Michael Wimmer
    This paper presents a new method to evaluate visibility from a point cloud by using a meshless statistical representation. The resulting evaluation uses much less memory than previous work while still producing high quality images, making it suitable for memory limited systems. The obtained results are exposed through the evaluation of shadow maps using a point cloud created from range images and are compared to current methods, which rely on mesh reconstruction techniques.
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    Digital Archiving of Large 3D Woven Cultural Artifacts
    (The Eurographics Association, 2012) Wakita, Wataru; Tanaka, Hiromi T.; Andrea Fusiello and Michael Wimmer
    Recently, research on digital museums received increased attention. We have worked on the digital archiving of the Gion Festival in Kyoto , focused on the culture of Kyoto, and developed a realtime and direct-touch interaction system for the 3D woven cultural artifact with haptic interface. After the Gion Festival of 2011, the repair work of the Fune-hoko storage was scheduled. Therefore, we created a 3D measurement system for the large 3D woven cultural artifacts with the laser range scanner, and tried to measure and model the 3D woven cultural artifact of the Fune-hoko at high definition in 3D. Most woven cultural artifact of the Fune-hoko is composed of gold thread, glass, cotton, and brilliant embroidery. Thus, 3D measurement is not easy. Therefore, we arbitrarily changed the laser strength according to the material of the fabric and modeled based on the point-based for the real-time rendering. As a result, we could generate the 3D woven cultural artifact models at high definition.
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    Minimising Longest Edge for Closed Surface Construction from Unorganised 3D Point Sets
    (The Eurographics Association, 2012) Ohrhallinger, Stefan; Mudur, Sudhir; Andrea Fusiello and Michael Wimmer
    Given an unorganised 3D point set with just coordinate data, we formulate the problem of closed surface construction as one requiring minimisation of longest edge in triangles, a criterion derivable from Gestalt laws for shape perception. Next we define the Minimum Boundary Complex (BCmin), which resembles the desired surface Bmin considerably, by slightly relaxing the topological constraint to make it at least two triangles per edge instead of exactly two required by Bmin. A close approximation of BCmin can be computed fast using a greedy algorithm. This provides a very good starting shape which can be transformed by a few steps into the desired shape, close to Bmin. Our method runs in O(nlogn) time, with Delaunay Graph construction as largest run-time factor. We show considerable improvement over previous methods, especially for sparse, non-uniform point spacing.
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    Multi-user Immersive 3D Reconstruction Environment
    (The Eurographics Association, 2012) Sedlacek, David; Travnicek, Zdenek; Zara, Jiri; Andrea Fusiello and Michael Wimmer
    A tool for user driven 3D reconstruction is presented in this poster together with ideas of tool extension for a work in immersive environment with multi-user editing possibility. The main purpose of the tool is cultural heritage and architecture reconstruction with direct visualization.
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    Combining Structure from Motion and Photometric Stereo: A Piecewise Formulation
    (The Eurographics Association, 2012) Sabzevari, Reza; Bue, Alessio Del; Murino, Vittorio; Andrea Fusiello and Michael Wimmer
    This paper introduces a novel piecewise formulation for Photometric Stereo on static scenes exploiting a set of multiple view constraints on the surface. Such constraints will help to recover geometrical properties of the object and to eliminate the global bas-relief ambiguity. On the other hand, the proposed piecewise formulation will help to model more complex photometric properties of the surfaces using local lighting models. The experimental results show performance of the proposed method against 3D ground truth.
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    Multiview-Consistent Color Sampling for Alpha Matting
    (The Eurographics Association, 2012) Kettern, Markus; Eisert, Peter; Andrea Fusiello and Michael Wimmer
    We propose a method for incorporating multiview information into color sampling methodologies for alpha matting. We extend the typical trimap input for matting algorithms to 3D space, enabling the association of stripes of pixels in semi-transparent regions like hair between different views without knowing or inferring their spatial structure. We also formulate a new cost function penalizing deviations of foreground color estimates between associated pixel stripes and its possible integration into a state-of-the-art color sampling approach.
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    GPU Texture Level of Abstraction in 3D Scenes
    (The Eurographics Association, 2012) Suarez, Jordane; Belhadj, Farès; Boyer, Vincent; Andrea Fusiello and Michael Wimmer
    We present a method to dynamically control the texture level of abstraction in 3D scene. Level of abstraction consists in visualizing the necessary and sufficient information in an image. Texture generation is generally realized by a designer in a high resolutions with a low level of abstraction. Our model provides automatically texture level of abstraction through offline and online segmentation and lets the designer define the number of colors in the object texture.
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    Joint Interactive Visualization of 3D Models and Pictures in Walkable Scenes
    (The Eurographics Association, 2012) Brivio, Paolo; Tarini, Marco; Cignoni, Paolo; Scopigno, Roberto; Andrea Fusiello and Michael Wimmer
    The 3D digitalization of buildings, urban scenes, and the like is now a mature technology. Highly complex, densely sampled, reasonably accurate 3D models can be obtained by range-scanners and even image-based reconstruction methods from dense image collections. Acquisition of naked geometry is not enough in Cultural Heritage applications, because the surface colors (e.g. pictorial data) are clearly of central importance. Moreover, the 3D geometry cannot be expected to be complete, lacking context, parts made of materials like glass and metal, difficult to reach surfaces, etc. Easily captured photographs are the natural source of the appearance data missing in the 3D geometry. In spite of the recent availability of reliable technologies to align 2D images on 3D data, the two sides of the dataset are not easy to combine satisfactorily in a visualization. Texture mapping techniques, perhaps the most obvious candidate for the task, assume strict content consistency (3D to 2D, and 2D to 2D) which these datasets do not and should not exhibit (the advantage of pictures consisting in their ability to feature details, lighting conditions, non-persistent items, etc. which are absent in the 3D models or in the other pictures). In this work, we present a simple but effective technique to jointly and interactively visualize 2D and 3D data of this kind. This technique is used within PhotoCloud [IV12], a flexible opensource tool which is being designed to browse, navigate, and visualize large, remotely stored 3D-2D datasets, and which emphasizes scalability, usability, and ability to cope with heterogeneous data from various sources.
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    Realtime 3D Sensor Based Air Flow Reconstruction
    (The Eurographics Association, 2012) Dyck, Michiel Van; Peremans, Herbert; Andrea Fusiello and Michael Wimmer
    Based on state-of-the art bio-inspired air flow sensors it becomes possible to capture air flow velocity and direction at multiple locations at the same time instance. These sensor values can be used in a simulation environment to visualize and examine the captured air flow pattern. The simulation environment makes interpolations of the flow between the sensors based on the Navier-Stokes equations. These equations can be solved efficiently using a stable approximation technique described by J Stam and making use of the enormous parallel computing power available through the latest graphical processing boards.
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    Consistent Media Model for Real-Time Scene Rendering
    (The Eurographics Association, 2012) Belhadj, Farès; Suarez, Jordane; Boyer, Vincent; Andrea Fusiello and Michael Wimmer
    We present a consistent model for artistic media reproduction in 3D scene renderings and animations. Artistic media reproduction can be defined as a media model (such as brush, pencil, ink) and a support (such as canvas and papers). We create a surface grain according to the object geometry and apply it as additional material properties. Furthermore, we propose to use the abstraction of obtained results as an entry of a fractal surface reconstruction process that provides additional effects of traditional media such as brush stroke effects. Our model is fully implemented on GPU and the rendering process is strongly real-time.