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Proceedings Theory and Practice of Computer Graphics, 2004.

8-10 June 2004

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  • Proceedings. Theory and Practice of Computer Graphics 2004

    Publication Year: 2004
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  • Proceedings Theory and Practice of Computer Graphics 2004

    Publication Year: 2004, Page(s): ii
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  • Proceedings Theory and Practice of Computer Graphics 2004

    Publication Year: 2004, Page(s): iii
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  • Copyright page

    Publication Year: 2004, Page(s): iv
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  • Table of contents

    Publication Year: 2004, Page(s):v - vii
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  • Acknowledgement

    Publication Year: 2004, Page(s): viii
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  • Keynote speaker biographies

    Publication Year: 2004, Page(s): ix
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (178 KB) | HTML iconHTML

    Provides an abstract of the keynote presentation and a brief professional biography of the presenter. The complete presentation was not made available for publication as part of the conference proceedings. View full abstract»

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  • Keynote abstracts

    Publication Year: 2004, Page(s): x
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (179 KB)

    Present abstract from the conference proceedings. View full abstract»

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  • Conference committee

    Publication Year: 2004, Page(s): xi
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  • Textual difference visualization of multiple search results utilizing detail in context

    Publication Year: 2004, Page(s):2 - 8
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (493 KB) | HTML iconHTML

    While searching documents on the Web users often refine their query terms, to generate new result lists and explore different pages, thus they end up with several result sets. Experience suggests that users compare these different sets, either implicitly or explicitly. Comparison between these sets (a) allows users to observe similarities and differences that are not innately viewable by viewing t... View full abstract»

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  • Data visualization within urban models

    Publication Year: 2004, Page(s):9 - 16
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1024 KB) | HTML iconHTML

    Models of urban environments have many uses for town planning, previsualization of new building work and utility service planning. Many of these models are three-dimensional, and increasingly there is a move towards real-time presentation of such large models. We present an algorithm for generating consistent 3D models from a combination of data sources, including Ordnance Survey ground plans, aer... View full abstract»

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  • Requirements for the visualisation of ontological evolution

    Publication Year: 2004, Page(s):18 - 23
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (301 KB) | HTML iconHTML

    Ontology evolution is one of the key problems facing ontology users today. Adapting ontologies to meet new requirements involves understanding various sections of ontologies and the changes made thereafter. Currently, a large amount of research has been undertaken in automatic change detection and change effects, however the process is far from automated. Users are involved at almost every step an... View full abstract»

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  • An investigation of multiple tools actions for virtual sculpting using implicit surfaces

    Publication Year: 2004, Page(s):24 - 31
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (530 KB) | HTML iconHTML

    We present an approach to the interactive deformation of soft objects. The soft objects are represented by implicit surfaces. Virtual tools are used to interact with soft virtual clay. The effect of multiple sculpting actions can be accumulated together. The way in which the tool deforms the clay can be controlled explicitly by a parameter. This approach can be used to build an interactive sculpti... View full abstract»

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  • Focus and context for volume visualization

    Publication Year: 2004, Page(s):32 - 39
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (726 KB) | HTML iconHTML

    Scientific investigation and simulation have been producing increasingly large datasets. Usually that kind of data is visualized employing some scientific visualization technique. Another related field, information visualization, deals with nonscientific large scale data, using different approaches to achieve an effective understanding. Our aim is to bring these two fields together, proposing a ta... View full abstract»

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  • Virtual physics for virtual reality

    Publication Year: 2004, Page(s):42 - 49
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (443 KB) | HTML iconHTML

    We consider the problem of giving virtual reality objects physical behaviour. We wish to do this in a way, which allows users to construct new objects from simpler ones and have the correct composite behaviour emerge. Our approach uses a graph structure to model, dynamically, the way one object can influence another. It uses a lightweight message system to cause actions between objects. It has rou... View full abstract»

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  • A model for virtual suturing in vascular surgery

    Publication Year: 2004, Page(s):50 - 58
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4819 KB) | HTML iconHTML

    Vascular surgery is a technically demanding surgical speciality, one component of which is the accurate placement of sutures through a diseased vessel wall. Minor errors can result in thrombosis and failure of the procedure. To develop the necessary skills takes many hours of practice, which, in the past, have been acquired at the operating table. Recreating a surgical environment using virtual to... View full abstract»

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  • A proposed physical based multilayered illumination model

    Publication Year: 2004, Page(s):60 - 65
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB) | HTML iconHTML

    We introduce a model for the illumination of multilayered surfaces. The model enables the simulation of numerous optical characteristics based upon the physics of light, such as thin film interference that occurs between layers. The technique can also account for spatial distribution, scattering and diffraction characteristics associated with subsurface particles View full abstract»

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  • Semi-automatically augmenting virtual environments with plausibly located clutter

    Publication Year: 2004, Page(s):66 - 70
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (382 KB) | HTML iconHTML

    We present an approach for semiautomatically augmenting existing virtual environments with sensibly and plausibly distributed features which model the clutter we find in real-world scenes. It focuses on the stages of identifying sensible potential clutter placement regions and then describes a novel use of parametric surfaces as a generalised means of specifying distribution patterns within these ... View full abstract»

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  • Electronic simulation for virtual reality: virtual prototyping

    Publication Year: 2004, Page(s):71 - 76
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB) | HTML iconHTML

    This paper examines a virtual prototyping system for electronic devices which incorporate visualisation using a novel integrated development environment that combines user interaction with photorealistic 2D and 3D models. Full system level hardware simulation is also supported within this framework which offers electronic simulation in a virtual environment. This helps to link product development ... View full abstract»

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  • A virtual environment tool applied to visualize construction processes

    Publication Year: 2004, Page(s):78 - 85
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1300 KB) | HTML iconHTML

    This communication describes a virtual reality technology application in the construction-training domain. A prototype was developed that serves as a didactic tool for civil engineering students of disciplines concerned with building construction. Geometric modeling and virtual reality techniques are used on the visual simulation of construction processes and to define user-friendly interfaces in ... View full abstract»

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  • Building virtual environment systems (and games) with user network awareness

    Publication Year: 2004, Page(s):86 - 93
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (573 KB) | HTML iconHTML

    The current development approach with networked applications is to isolate the user from the state of the network. With virtual environment systems and online games, this design principle seriously hampers the utility of the application for the users, who associate most disruptions to network problems. The perceptual network metaphors (PNM) is a novel approach to handle the negative impact of degr... View full abstract»

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  • ARCOLite-an XML based system for building and presenting virtual museum exhibitions using Web3D and augmented reality

    Publication Year: 2004, Page(s):94 - 101
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (676 KB) | HTML iconHTML

    This paper describes ARCOLite, our low cost XML based client-server architecture for building and presenting digital heritage content in virtual museums. Our system includes components for creation and refinement of virtual artefacts including virtual reconstruction of buildings; XML content management, XML technologies for content repositories and presentation; and content visualisation using Web... View full abstract»

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  • A collaborative virtual environment for public consultation in the urban planning process

    Publication Year: 2004, Page(s):104 - 111
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (382 KB) | HTML iconHTML

    This paper extends research in collaborative virtual environments (CVEs) by exploring their use in a purposeful interactive public application. Though often discussed, few such studies have been undertaken, since the widespread availability of 3D platforms is a recent phenomenon. The application selected is that of urban design and review. The experiments use a virtual cityscape in which planning ... View full abstract»

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  • Behaviour based motion simulation for fire evacuation procedures

    Publication Year: 2004, Page(s):112 - 118
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB) | HTML iconHTML

    Virtual reality simulation of crowd movements in urban space and in architecture is a powerful complementary verification tool to assist urban planning, architectural design, and safety assessment. This paper describes a behaviour based simulation system for modeling movements of a high-density human crowd in buildings under constrains of fire evacuation procedures. Based on a behaviour simulation... View full abstract»

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  • Synthesising facial emotions

    Publication Year: 2004, Page(s):120 - 127
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (427 KB) | HTML iconHTML

    We present two approaches for the generation of novel video textures, which portray a human expressing different emotions. Here training data is provided by video sequences of an actress expressing specific emotions such as angry, happy and sad. The main challenge of modelling these video texture sequences is the high variance in head position and facial expression. Principal components analysis (... View full abstract»

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