EGMM01: EG Multimedia Workshop 2001

Permanent URI for this collection

https://diglib7.eg.org/handle/10.2312/352

Self-Organizing Multimedia and Extremely Distributed Architectures

[meta data] [files:
001-006.pdf
]
Butera, William
; 
Bove, V. Michael
; 
Jr.,

Story Networks: 'The medium is the message'; The content, your souvenir

[meta data] [files:
007-008.pdf
]
Davenport, Glorianna

Adaptive Visualization of Distributed 3D Documents Using Image Streaming Techniques

[meta data] [files:
009-020.pdf
]
Loeffler, Jobst
; 
Fellner, Dieter W.

3D-dvshop: a 3D Dynamic Virtual Shop

[meta data] [files:
033-042.pdf ,
3D-dvshop.ppt ,
3Ddvshop.gif
]
Sann, A.
; 
Montrucchio, B.
; 
Montuschi, P.
; 
Demartini, C.

Reusing Motions and Models in Animations

[meta data] [files:
021-032.pdf ,
ANDYROOM.AVI ,
ANDYST~1.AVI ,
ANDYWAVE.AVI ,
ANDYWA~1.AVI
]
Huang, Akanksha Z.
; 
Prabhakaran, B.
; 
Ruiz, C. R.
; 
Jr.,

Realising Real Time Multimedia Groupware on the Web

[meta data] [files:
043-054.pdf
]
Allison, Colin
; 
Bateman, Martin
; 
Ruddle, Alan

Sobol Partial Distortion Algorithm for Fast Full Search in Block Motion Estimation

[meta data] [files:
087-094.pdf
]
Quaglia, Davide
; 
Montrucchino, Bartolomeo

Extended Format Definition and Quality-driven Format Negotiation in Multimedia Systems

[meta data] [files:
065-074.pdf
]
Lohse, Marcos
; 
Slusallek, Philipp
; 
Wambach, Patrick

A Server-based Interactive Remote Walkthrough

[meta data] [files:
075-086.pdf
]
Cohen-Or, Daniel
; 
Noimark, Yuval
; 
Zvi, Tali

Abstractions in Multimedia Authoring: The MAVA Approach

[meta data] [files:
055-064.pdf
]
Hauser, Juergen
; 
Tian, Jing

DynaVideo - A Dynamic Video Distribution Service

[meta data] [files:
095-106.pdf
]
Leite, Luiz Eduardo
; 
Alves, Renata
; 
Lemos, Guido
; 
Batista, Thais

Authentication of Volume Data Using Wavelet-Based Foveation

[meta data] [files:
119-130.pdf
]
Kankanhalli, M. S.
; 
Chang, E.-C.
; 
Guan, X.
; 
Huang, Z.
; 
Wu, Y.

Content Based Retrieval of VRML Objects - An Iterative and Interactive Approach

[meta data] [files:
107-118.pdf
]
Elad, Michael
; 
Tal, Ayellet
; 
Ar, Sigal

Non-Conventional Interfaces using Stamp Controllers

[meta data] [files:
141-152.pdf
]
Mallinder, Hugh
; 
Jones, Huw

Interactive, Evolutionary Textured Sound Composition

[meta data] [files:
153-164.pdf
]
Fels, Sidney
; 
Manzolli, Jonatas

Buoy Indexing of Metric Feature Spaces for Fast Approximate Image Queries

[meta data] [files:
131-140.pdf
]
Volmer, Stephan

Screen Space: Depiction and the Space of Interactive Media

[meta data] [files:
165-176.pdf
]
Davis, Stephen Boyd
; 
Jones, Huw

SPATIAL VIDEO Exploring Space Using Multiple Digital Videos

[meta data] [files:
177-188.pdf
]
Nobre, Edmundo M. N.
; 
Camara, Antonio S.

LIVE@WEB.COM Using CBIR Technology in InteractiveWeb-TV

[meta data] [files:
189-198.pdf
]
Morsdorf, Felix
; 
Volmer, Stephan

2BeOn - Interactive Television Supporting Interpersonal Communication

[meta data] [files:
199-208.pdf
]
Abreu, Jorge
; 
Almeida, Pedro
; 
Branco, Vasco

Effective Exercise Instruction System Using Virtual Human

[meta data] [files:
209-209.pdf
]
Itami, Yoshikazu
; 
Yoshida, Norimasa
; 
Kitajima, Katsuhiro

BibTeX (EGMM01: EG Multimedia Workshop 2001)
@inproceedings{
10.2312:EGMM/egmm01/001-006,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
Self-Organizing Multimedia and Extremely Distributed Architectures}},

author = {
Butera, William
 and 
Bove, V. Michael
 and 
Jr.,
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/001-006}

}
@inproceedings{
10.2312:EGMM/egmm01/007-008,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
Story Networks: 'The medium is the message'; The content, your souvenir}},

author = {
Davenport, Glorianna
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/007-008}

}
@inproceedings{
10.2312:EGMM/egmm01/009-020,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
Adaptive Visualization of Distributed 3D Documents Using Image Streaming Techniques}},

author = {
Loeffler, Jobst
 and 
Fellner, Dieter W.
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/009-020}

}
@inproceedings{
10.2312:EGMM/egmm01/033-042,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
3D-dvshop: a 3D Dynamic Virtual Shop}},

author = {
Sann, A.
 and 
Montrucchio, B.
 and 
Montuschi, P.
 and 
Demartini, C.
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/033-042}

}
@inproceedings{
10.2312:EGMM/egmm01/021-032,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
Reusing Motions and Models in Animations}},

author = {
Huang, Akanksha Z.
 and 
Prabhakaran, B.
 and 
Ruiz, C. R.
 and 
Jr.,
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/021-032}

}
@inproceedings{
10.2312:EGMM/egmm01/043-054,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
Realising Real Time Multimedia Groupware on the Web}},

author = {
Allison, Colin
 and 
Bateman, Martin
 and 
Ruddle, Alan
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/043-054}

}
@inproceedings{
10.2312:EGMM/egmm01/087-094,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
Sobol Partial Distortion Algorithm for Fast Full Search in Block Motion Estimation}},

author = {
Quaglia, Davide
 and 
Montrucchino, Bartolomeo
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/087-094}

}
@inproceedings{
10.2312:EGMM/egmm01/065-074,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
Extended Format Definition and Quality-driven Format Negotiation in Multimedia Systems}},

author = {
Lohse, Marcos
 and 
Slusallek, Philipp
 and 
Wambach, Patrick
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/065-074}

}
@inproceedings{
10.2312:EGMM/egmm01/075-086,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
A Server-based Interactive Remote Walkthrough}},

author = {
Cohen-Or, Daniel
 and 
Noimark, Yuval
 and 
Zvi, Tali
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/075-086}

}
@inproceedings{
10.2312:EGMM/egmm01/055-064,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
Abstractions in Multimedia Authoring: The MAVA Approach}},

author = {
Hauser, Juergen
 and 
Tian, Jing
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/055-064}

}
@inproceedings{
10.2312:EGMM/egmm01/095-106,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
DynaVideo - A Dynamic Video Distribution Service}},

author = {
Leite, Luiz Eduardo
 and 
Alves, Renata
 and 
Lemos, Guido
 and 
Batista, Thais
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/095-106}

}
@inproceedings{
10.2312:EGMM/egmm01/119-130,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
Authentication of Volume Data Using Wavelet-Based Foveation}},

author = {
Kankanhalli, M. S.
 and 
Chang, E.-C.
 and 
Guan, X.
 and 
Huang, Z.
 and 
Wu, Y.
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/119-130}

}
@inproceedings{
10.2312:EGMM/egmm01/107-118,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
Content Based Retrieval of VRML Objects - An Iterative and Interactive Approach}},

author = {
Elad, Michael
 and 
Tal, Ayellet
 and 
Ar, Sigal
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/107-118}

}
@inproceedings{
10.2312:EGMM/egmm01/141-152,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
Non-Conventional Interfaces using Stamp Controllers}},

author = {
Mallinder, Hugh
 and 
Jones, Huw
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/141-152}

}
@inproceedings{
10.2312:EGMM/egmm01/153-164,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
Interactive, Evolutionary Textured Sound Composition}},

author = {
Fels, Sidney
 and 
Manzolli, Jonatas
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/153-164}

}
@inproceedings{
10.2312:EGMM/egmm01/131-140,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
Buoy Indexing of Metric Feature Spaces for Fast Approximate Image Queries}},

author = {
Volmer, Stephan
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/131-140}

}
@inproceedings{
10.2312:EGMM/egmm01/165-176,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
Screen Space: Depiction and the Space of Interactive Media}},

author = {
Davis, Stephen Boyd
 and 
Jones, Huw
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/165-176}

}
@inproceedings{
10.2312:EGMM/egmm01/177-188,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
SPATIAL VIDEO Exploring Space Using Multiple Digital Videos}},

author = {
Nobre, Edmundo M. N.
 and 
Camara, Antonio S.
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/177-188}

}
@inproceedings{
10.2312:EGMM/egmm01/189-198,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
LIVE@WEB.COM   Using CBIR Technology in InteractiveWeb-TV}},

author = {
Morsdorf, Felix
 and 
Volmer, Stephan
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/189-198}

}
@inproceedings{
10.2312:EGMM/egmm01/199-208,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
2BeOn - Interactive Television Supporting Interpersonal Communication}},

author = {
Abreu, Jorge
 and 
Almeida, Pedro
 and 
Branco, Vasco
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/199-208}

}
@inproceedings{
10.2312:EGMM/egmm01/209-209,

booktitle = {
Eurographics Multimedia Workshop},

editor = {
J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
},
title = {{
Effective Exercise Instruction System Using Virtual Human}},

author = {
Itami, Yoshikazu
 and 
Yoshida, Norimasa
 and 
Kitajima, Katsuhiro
},
year = {
2001},

publisher = {
The Eurographics Association},


ISSN = {1812-7118},
ISBN = {3-211-83769-8},

DOI = {
10.2312/EGMM/egmm01/209-209}

}

Browse

Recent Submissions

Now showing 1 - 21 of 21
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    Self-Organizing Multimedia and Extremely Distributed Architectures
    (The Eurographics Association, 2001) Butera, William; Bove, V. Michael; Jr.,; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    The Object-Based Media Group at the MIT Media Laboratory is developing robust, self-organizing programming models for dense ensembles of ultra-miniaturized computing nodes which are deployed by the thousands in bulk fashion, e.g. embedded into building materials. While such systems potentially offer almost unlimited computation for multimedia purposes, the individual devices contain tiny amounts of memory, lack explicit addresses, have wireless communication ranges only in the range of millimeters to centimeters, and are expected to fail at high rates. An unorthodox approach to handling of multimedia data is required in order to achieve useful, reliable work in such an environment. We describe the hardware and software strategies, and demonstrate severalexampl es showing the processing of images and sound in such a system.
  • Thumbnail Image
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    Story Networks: 'The medium is the message'; The content, your souvenir
    (The Eurographics Association, 2001) Davenport, Glorianna; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    Storytelling -- a fundamental mode of human communication -- has adapted in form, content, and technique as new expressive technologies have appeared and evolved. The past century has witnessed the growth of storytelling tools, electronic media channels, and the mass media one-to-many 'broadcast' model. Today -- as we transition to digital media, ubiquitous networking, audience-sensing devices, and computer-aided content delivery -- new models of media storytelling are emerging. These forms may be designed to find you (as opposed to your finding them); to be tradable (in a peer to peer fashion) and modifiable; to be highly distributed in the space/time; to interconnect and invite browsable exploration by crowds and/or to be aggregated over time by one or more participant authors. This talk considers the form, content and technologies associated with customizable, personalizable stories of the future.
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    Adaptive Visualization of Distributed 3D Documents Using Image Streaming Techniques
    (The Eurographics Association, 2001) Loeffler, Jobst; Fellner, Dieter W.; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    With the emergence of open information spaces such as digital libraries, advanced techniques for interactive visualization of complex and protected 3D documents are needed. This paper presents a new visualization concept which deals with the problems of complexity and security of digital 3D documents in open information spaces. A dynamic combination of remote and local 3D rendering is used to allow scaling of the information quantity on the client side. The software architecture SCA3D (3D Scalable Scenes Architecture), which provides functionality for adaptive visualization and protection of intellectual property rights, is presented.
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    3D-dvshop: a 3D Dynamic Virtual Shop
    (The Eurographics Association, 2001) Sann, A.; Montrucchio, B.; Montuschi, P.; Demartini, C.; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    In recent years, virtual rality has shown all its potential in a large spectrum of applications: training, simulation, CAD, and so on. Although existing technologies allow the creation of immersive virtual reality browsing experiences, little has been devoted to applying this new tool to electronic commerce (e-commerce) since almost all e-commerce web sites present products in a 2D on-line catalog. In this paper we present 3D-dvshop, a dynamic 3D virtual shop: a user can build his or her own shop, choosing a set of products that will be dynamically placed in a collection of specially created 'rooms'. The use of technologies such as VRML and Java allows full 3D interaction with products. In this way, the browsing experience can be more natural, attractive, realistic, and fun.
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    Reusing Motions and Models in Animations
    (The Eurographics Association, 2001) Huang, Akanksha Z.; Prabhakaran, B.; Ruiz, C. R.; Jr.,; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    Computer animated 3D models have been increasingly used in multimedia presentations because they can be viewed and manipulated directly in 3D. In this paper, we propose a database approach for this problem. Our main objective is to help authors create multimedia pre- sentations by reusing existing animations. In our approach, animations are stored in databases. We define a set of metadata that describe the animations. Authors can search on these databases by issuing queries. A set of motion editing operations are defined and used to manipulate the query results to create new ones according to the requirements of the presentations.We have developed an animation toolkit implementing the approach and the results are promising.
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    Realising Real Time Multimedia Groupware on the Web
    (The Eurographics Association, 2001) Allison, Colin; Bateman, Martin; Ruddle, Alan; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    Real-time audio and video conferencing has not yet been satisfactorily integrated into web-based groupware environments. Conferencing tools are at best only loosely linked to other parts of a shared working environment. This is mainly due to the special Quality of Service (QoS) requirements that these types of resources demand. This paper describes an approach to overcoming this problem by integrating the management of video and audio conferences into the resource allocation mechanism of an existing web-based groupware framework. The issue of adaptation is discussed and a means of initialising multimedia session parameters based on predicted QoS is described. In addition to linking audio and video media rendering quality to the predicted network QoS, the use of models to reduce bandwidth is also explored, replacing video content with control data. Component technologies utilised include the TAGS groupware framework, the Java Media Framework, a Conference Control Architecture and VRML-based avatars that can intermix with real actors.
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    Sobol Partial Distortion Algorithm for Fast Full Search in Block Motion Estimation
    (The Eurographics Association, 2001) Quaglia, Davide; Montrucchino, Bartolomeo; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    Block motion estimation is a cpu intensive task for video encoding. Many fast algorithms have been developed to solve this problem, trying to improve both block searching and block matching. Some of them reduce the image quality compared to the full search method in order to improve performance. The algorithm presented in this paper, called Sobol Partial Distoriton (SPD) algorithm, is a full search (lossless), fast matching, block motion estimation algorithm, applying partial distortion elimination. It uses a new matching strategy to quickly compute distortion and reduce block matching computation. Image-dependent computation is not required, since the matching strategy does not depend on the frame sequence. the proposed algorithm performs well in terms of computational speedup in comparison with other existing full search algorithms.
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    Extended Format Definition and Quality-driven Format Negotiation in Multimedia Systems
    (The Eurographics Association, 2001) Lohse, Marcos; Slusallek, Philipp; Wambach, Patrick; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    Multimedia middleware needs to support a wide variety of devices together with their respective data formats. This becomes increasingly relevant and difficult in a distributed environment where new devices and formats can become available at any time and must be taken into account when deciding how to set up a flowgraph of distributed multimedia components. In this paper we present an automatic algorithm for configuring and connecting a high-level flowgraph of multimedia components. Given this abstract flowgraph of participating devices and key components, the algorithm automatically selects necessary additional components, chooses suitable formats, and connects the flowgraph, while trying to achieve the best possible quality.
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    A Server-based Interactive Remote Walkthrough
    (The Eurographics Association, 2001) Cohen-Or, Daniel; Noimark, Yuval; Zvi, Tali; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    This paper presents a server-based remote walkthrough system. The client is assumed to be a thin client, like a handset or a mobile device, with no strong processor but with some embedded video chip. The server holds the large environment, generates the frames, encodes and transmits them to the client. The encoded frames are transmitted as a video stream to the client, which then decodes the stream and displays it. We show how the computer generated frames can be efficiently encoded using layering techniques to yield a lighter stream, which enables its transmission over narrow bandwidth channels and minimizes the communication latency. To enable the interactivity of the system, the rendering engine generates the frames in real-time according to the client input, and feeds the frames to an accelerated video encoder based on the available optical flow.
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    Abstractions in Multimedia Authoring: The MAVA Approach
    (The Eurographics Association, 2001) Hauser, Juergen; Tian, Jing; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    The support of abstractions in authoring systems increases the efficiency of the specification of multimedia documents. Authoring based on a very low abstraction, for example script programming, is very complex and time consuming. In addition, authoring systems supporting a high abstraction are so far restricted to one specific application area. This paper presents an extensible approach that supports abstractions in different application areas (such as computer- based training or a travel guide). In this approach a meta document model and the corresponding presentation and authoring system are developed. During conception of the authoring system, different concepts (e.g. templates or application specific views) have been realized to introduce further abstractions.
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    DynaVideo - A Dynamic Video Distribution Service
    (The Eurographics Association, 2001) Leite, Luiz Eduardo; Alves, Renata; Lemos, Guido; Batista, Thais; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    Most solutions proposed to implement audio and video distribution services have been designed for specific infrastructures or have been tailored to specific application requirements, such as stream and clients types which will be supported by the service. Other important aspect in this context is that the performance of distributed services is becoming increasingly variable due to changing load patterns and user mobility. This paper presents the Dynamic Video Distribution Service - DynaVideo. The service may be designed to distribute video in a way that is independent of the video format and to interact with different types of clients. The main feature of DynaVideo is the ability to configure the service dynamically to a specific demand.
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    Authentication of Volume Data Using Wavelet-Based Foveation
    (The Eurographics Association, 2001) Kankanhalli, M. S.; Chang, E.-C.; Guan, X.; Huang, Z.; Wu, Y.; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    3D volume data has been increasingly used in many appli- cations. The digital nature of the data allows easy creation, copying and distribution. However, it also allows ease of manipulation which can enable wilful or inadvertent misrepresentation of the content. For an ap- plication like medical imaging, this can have serious diagnostic and legal implications. Thus there is a strong need to establish the integrity of a particular volume data-set. We argue that the traditional data authenti- cation mechanisms like digital signatures or cryptographic methods are not very useful in this context due to their extreme fragility. What is required is a method that can detect the integrity for allowable content- preserving manipulations.We have developed a novel authentication pro- cedure which is robust against benign content manipulation. The volume data can be robustly authenticated under normal operations such as scal- ing, resampling and additive Gaussian noise. On the other hand, it offers protection against any malefic or unintentional data manipulation which significantly changes the content of the volume data-set. Such manipu- lations include cropping, changing of voxel values etc. Our method uses segmentation, wavelet-based foveation, and encryption to achieve this. We have implemented the method and tested its robustness for several manipulations.
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    Content Based Retrieval of VRML Objects - An Iterative and Interactive Approach
    (The Eurographics Association, 2001) Elad, Michael; Tal, Ayellet; Ar, Sigal; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    We examine the problem of searching a database of three-dimensional objects (given in VRML) for objects similar to a given object. We introduce an algorithm which is both iterative and interactive. Rather than base the search solely on geometric feature similarity, we propose letting the user influence future search results by marking some of the results of the current search as 'relevant' or 'irrelevant', thus indicating personal preferences. A novel approach, based on SVM, is used for the adaptation of the distant measure consistently with these markings, which brings the 'relevant' objects closer and pushes the 'irrelevant' objects farther. We show that in practice very few iterations are needed for the system to cenverge well on what the user 'had in mind'.
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    Non-Conventional Interfaces using Stamp Controllers
    (The Eurographics Association, 2001) Mallinder, Hugh; Jones, Huw; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    Artists continue to search for new methods of creation of artworks. The trend to interactive multimedia installation work requires systems that allow participants to interact in subtle ways. The paper describes a number of non-conventional interfaces to computer mediated art works achieved using small Programmable Logic Controllers (PLC) called Stamps . These are programmed in BASIC and can be interfaced to personal computers or used as stand alone devices. They are cheap and extremely versatile in their use for non-conventional interfaces.
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    Interactive, Evolutionary Textured Sound Composition
    (The Eurographics Association, 2001) Fels, Sidney; Manzolli, Jonatas; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    We describe a system that maps the interaction between two people to control a genetic process for generating music. We start with a population of melodies encoded genetically. This population is allowed to breed every biological cycle creating new members of the population based upon the semantics of the spatial relationship between two people moving in a large, physical space. A pre-specified hidden melody is used to select a melody from the population to play every musical cycle. The overlapping of selected melodies provides an intriguing textured musical space.
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    Buoy Indexing of Metric Feature Spaces for Fast Approximate Image Queries
    (The Eurographics Association, 2001) Volmer, Stephan; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    A novel indexing scheme for solving the problem of nearest neighbor queries in generic metric feature spaces for content-based image retrieval is proposed to break the 'dimensionality curse.' The basis for the proposed method is the partitioning of the feature dataset into clusters that are represented by single buoys. Upon submission of a query request, only a small number of clusters whose buoys are close to the query object are considered for the approximate query result, effectively cutting down the amount of data to be processed enormously. Results concerning the retrieval accuracy from extensive experimentation with a real image archive are given. The influence of control parameters is investigated with respect to the tradeoff between retrieval accuracy and computational cost.
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    Screen Space: Depiction and the Space of Interactive Media
    (The Eurographics Association, 2001) Davis, Stephen Boyd; Jones, Huw; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    The spatial properties of digital interactive multimedia are analysed and contrasted with those of pictures, and of narrative feature films and factual television. These media have developed distinctive spatial methods and questions arise concerning the transferability of such methods to other, interactive, forms. A taxonomy is proposed which reflects existing practice in digital interactive media and indicates promising lines of enquiry for the future.
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    SPATIAL VIDEO Exploring Space Using Multiple Digital Videos
    (The Eurographics Association, 2001) Nobre, Edmundo M. N.; Camara, Antonio S.; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    This paper pre sents and discusses a new approach to collect, organize and explore multiple digital videos on a spatial basis. We present a methodology based on direct video frame indexation to the real space represented in the video images. This approach facilitates the exploration of space through multiple videos. An illustrative application of this technology for multimedia spatial information systems is provided. Future developments related to the three-dimensional explorations of space using digital video are also discussed.
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    LIVE@WEB.COM Using CBIR Technology in InteractiveWeb-TV
    (The Eurographics Association, 2001) Morsdorf, Felix; Volmer, Stephan; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    The increasing amount of internet based television broadcasts has lead to new approachs to interactivity in TV programs. We developed a system which is able to supply the viewer of the program upon interaction with information relating to the program, only based on the low-level visual content of the scene. This aim is achieved by comparing signatures describing the visual content of single frames of the video with a remote database of signatures derived from known videos. The database actually links the visual information contained in the signatures to some second-level information interesting for the user. Two main problems in extending CBIR technology to videos must be overcome, one is the extraction of the visual information out of the highly redundant video material, and the other is reducing the matching time of the system enough to allow for web-based interactivity.
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    2BeOn - Interactive Television Supporting Interpersonal Communication
    (The Eurographics Association, 2001) Abreu, Jorge; Almeida, Pedro; Branco, Vasco; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    Interpersonal communication mediated by computer services supports the reinforcement and emergence of new communities brought together by leisure or work interests. This paper presents a workbench system that aims to study how the same principle can be applied in interactive television. The main objective is to allow TV users to be online (2BeOn) through the integration of basic and advanced communication services, enabling them to reinforce their interpersonal communication. The 2BeOn system is based on four core components: user tracking, communication services, interface engine and collaboration content/interaction tracing. In addition to the social and behavioural context of the system, its conceptualisation, prototyping and evaluation are addressed.
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    Effective Exercise Instruction System Using Virtual Human
    (The Eurographics Association, 2001) Itami, Yoshikazu; Yoshida, Norimasa; Kitajima, Katsuhiro; J.A.Jorge and N.M.Correia and H.Jones and M.B.Kamegai
    This study aims at developing an aerobics exercise instruction software for personal use by introducing an instruction program best fit to the physical conditions of respective exerciser. The software uses the combination of virtual instructor (virtual human) and Karvonen method in order to develop a comprehensive personal aerobics exercise instruction software. Karvonen method is an algorithm of relationship between the movement of the virtual human and exercise intensity. In this study, its effectiveness is verified and confirmed. The study is mainly focused on the development of synchronization technique between the speed of animation figures' movement for controlling exercise intensity and speed of the sound output, which is the most important technique in the application of the study result into practical use.