STARs

Permanent URI for this collection

https://diglib7.eg.org/handle/10.2312/211

Distributed Cooperative Visualization

[meta data] [files:
star2.pdf
]
Brodlie, K.W.
; 
Duce, D.A.
; 
Gallop, J.R.
; 
Wood, J.D.

Interpolation and Approximation of Surfaces from Three-Dimensional Scattered Data Points

[meta data] [files:
star3.pdf
]
Mencl, R.
; 
Möller, H.

Overview of Parallel Photo-realistic Graphics

[meta data] [files:
star1.pdf
]
Reinhard, E.
; 
Chalmers, A.G.
; 
Jansen, F.W.

State of the Art in Perceptually Driven Radiosity

[meta data] [files:
star5.pdf
]
Prikryl, J.
; 
Purgathofer, W.

A Standard for Multimedia Middleware

[meta data] [files:
star4paper.pdf ,
star4slides.pdf
]
Duke, D.J.
; 
Herman, I.

Multidimensional free-form deformation tools

[meta data] [files:
star6.pdf
]
Bechmann, D.

BibTeX (STARs)
@inproceedings{
10.2312:egst.19981020,

booktitle = {
Eurographics 1998 - STARs},

editor = {
title = {{
Distributed Cooperative Visualization}},

author = {
Brodlie, K.W.
 and 
Duce, D.A.
 and 
Gallop, J.R.
 and 
Wood, J.D.
},
year = {
1998},

publisher = {
Eurographics Association},


ISSN = {1017-4656},

DOI = {
10.2312/egst.19981020}

}
@inproceedings{
10.2312:egst.19981021,

booktitle = {
Eurographics 1998 - STARs},

editor = {
title = {{
Interpolation and Approximation of Surfaces from Three-Dimensional Scattered Data Points}},

author = {
Mencl, R.
 and 
Möller, H.
},
year = {
1998},

publisher = {
Eurographics Association},


ISSN = {1017-4656},

DOI = {
10.2312/egst.19981021}

}
@inproceedings{
10.2312:egst.19981019,

booktitle = {
Eurographics 1998 - STARs},

editor = {
title = {{
Overview of Parallel Photo-realistic Graphics}},

author = {
Reinhard, E.
 and 
Chalmers, A.G.
 and 
Jansen, F.W.
},
year = {
1998},

publisher = {
Eurographics Association},


ISSN = {1017-4656},

DOI = {
10.2312/egst.19981019}

}
@inproceedings{
10.2312:egst.19981023,

booktitle = {
Eurographics 1998 - STARs},

editor = {
title = {{
State of the Art in Perceptually Driven Radiosity}},

author = {
Prikryl, J.
 and 
Purgathofer, W.
},
year = {
1998},

publisher = {
Eurographics Association},


ISSN = {1017-4656},

DOI = {
10.2312/egst.19981023}

}
@inproceedings{
10.2312:egst.19981022,

booktitle = {
Eurographics 1998 - STARs},

editor = {
title = {{
A Standard for Multimedia Middleware}},

author = {
Duke, D.J.
 and 
Herman, I.
},
year = {
1998},

publisher = {
Eurographics Association},


ISSN = {1017-4656},

DOI = {
10.2312/egst.19981022}

}
@inproceedings{
10.2312:egst.19981024,

booktitle = {
Eurographics 1998 - STARs},

editor = {
title = {{
Multidimensional free-form deformation tools}},

author = {
Bechmann, D.
},
year = {
1998},

publisher = {
Eurographics Association},


ISSN = {1017-4656},

DOI = {
10.2312/egst.19981024}

}

Browse

Recent Submissions

Now showing 1 - 6 of 6
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    Item
    Distributed Cooperative Visualization
    (Eurographics Association, 1998) Brodlie, K.W.; Duce, D.A.; Gallop, J.R.; Wood, J.D.
    Visualization is essentially a collaborative activity, widely used in many scientific and engineering disciplines. Visualization may be used to convey insight into phenomena that are well-understood, or to present new data with a view to finding new patterns of meaning and new phenomena. Visualization is a powerful tool in presentations (lectures, seminars, papers etc) and in discussions between colleagues. We are seeing a growth in the use of video conferencing to facilitate meetings between participants in geographically separate locations, both specialized facilities (video conference rooms) using dedicated communications channels (ISDN, ATM etc) and desktop video conferencing using the Internet and multicast (Mbone) communications. Distributed cooperative visualization aims to enhance the video conferencing environment (usually the desktop environment) with access to visualization facilities. At the most basic level, pre-generated visualizations may be shared through a shared whiteboard tool. Richer approaches enable users to share control of the kind of visualization generated and the parameters used in the generation. The World Wide Web provides a basis for asynchronous cooperative working and there are experimental extensions in the direction of cooperative browsing. VRML provides the basis for sharing 3D graphics over the Internet.We look at ways in which VRML is being used in visualization, to generate models which may be browsed by participants in a session. Asynchronous collaboration becomes possible by recording the details of the visualization created by one participant, and making this available to subsequent ‘visitors’ to the Web site. A multiuser audit trail emerges. Developments on multi-user VRML worlds also have potential applications in visualization, providing a form of synchronous collaboration. This STAR reviews the state of the art in these areas, draws out common threads in these diverse approaches and looks at strengths, weaknesses and opportunities for further development in this field.
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    Interpolation and Approximation of Surfaces from Three-Dimensional Scattered Data Points
    (Eurographics Association, 1998) Mencl, R.; Möller, H.
    There is a wide range of applications for which surface interpolation or approximation from scattered data points in space is important. Dependent on the field of application and the related properties of the data, many algorithms were developed in the past. This contribution gives a survey of existing algorithms, and identifies basic methods common to independently developed solutions. We distinguish surface construction based on spatial subdivision, distance functions, warping, and incremental surface growing. The systematic analysis of existing approaches leads to several interesting open questions for further research.
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    Overview of Parallel Photo-realistic Graphics
    (Eurographics Association, 1998) Reinhard, E.; Chalmers, A.G.; Jansen, F.W.
    Global illumination is an area of research which tries to develop algorithms and methods to render images of artificial models or worlds as realistically as possible. Such algorithms are known for their unpredictable data accesses and their high computational complexity. Rendering a single high quality image may take several hours, or even days. For this reason parallel processing must be considered as a viable option to compute images in a reasonable time. The nature of data access patterns and often the sheer size of the scene to be rendered, means that a straightforward parallelisation, if one exists, may not always lead to good performance. This holds for all three rendering techniques considered in this report: ray tracing, radiosity and particle tracing.
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    State of the Art in Perceptually Driven Radiosity
    (Eurographics Association, 1998) Prikryl, J.; Purgathofer, W.
    Despite its popularity among researchers the radiosity method still suffers of some disadvantages over other global illumination methods. Besides the fact that the original method allows only for solving the global illumination of environments consisting of purely diffuse surfaces, the method is rather computationally demanding. In the search for possible speed-up techniques one of the possibilities is to take also the characteristic features of the human visual system. Being aware of how the human visual perception works, one may compute the radiosity solution to lower accuracy in terms of physically based error metrics, but being sure that the physically correct solution won’t bring any improvements in the image for the human observer. In the following report we briefly summarize achievements in the radiosity research in the past years and present the state of the art in perceptual approaches used in computer graphics nowadays. We will give an overview of known tone-mapping and perceptually-based image comparison techniques that can be used in the scope of the radiosity method to further speed up the computational process. In the second part of the report we concentrate on known radiosity methods that already use these perceptual approaches to predict different visible errors of the result of the radiosity computation. We will not speak about importance-driven radiosity solutions, as those methods are based on using geometric visibility rather than on using human perception-aware techniques.
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    A Standard for Multimedia Middleware
    (Eurographics Association, 1998) Duke, D.J.; Herman, I.
    Hardware, software, and coding standards for digital media have played a significant role in making multimedia presentation an intrinsic compponent of many systems. However, these standards are primarily concerned with the storage, encoding and transport of media content, and have not been intended to address the integration of multimedia data into more general programming environments for media presentation. PREMO (PResentation Environments for Multimedia Objects) is a project within the SC24 committee of the International Organisation for Standardization (ISO) aimed at developing an API (Application Programmer Interface) that integrates the processing and presentation of distributed multimedia with that of synthesised graphics. This report summarises the contents of the PREMO standard and explains how the integration of graphics into a general framework for media processing is achieved.
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    Multidimensional free-form deformation tools
    (Eurographics Association, 1998) Bechmann, D.
    A survey of free-form deformation tools where the deformation is controlled by manipulating a 0-D to 3-D tool. Characteristics of a model that includes all these and generalises the concept will be presented.