Proceedings. 1998 IEEE Conference on Information Visualization. An International Conference on Computer Visualization and Graphics (Cat. No.98TB100246)

31-31 July 1998

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  • Proceedings. 1998 IEEE Conference on Information Visualization. An International Conference on Computer Visualization and Graphics (Cat. No.98TB100246)

    Publication Year: 1998
    Request permission for commercial reuse | PDF file iconPDF (318 KB)
    Freely Available from IEEE
  • TOKEN CITY: 3-D animation and multimedia installation

    Publication Year: 1998
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (110 KB)

    Summary form only given. The New York subway has becomes the site for a 3D animation simulating reality in an extraordinary environment. A sense of digital time travel is accomplished through the synthesis of 3D animation with computer graphics, real-time video and an original soundtrack. The content is a portrait of energy, both human and mechanical, where the digital architecture of the subway a... View full abstract»

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  • Token City

    Publication Year: 1998, Page(s): 250
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    Freely Available from IEEE
  • Author index

    Publication Year: 1998, Page(s):351 - 352
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    Freely Available from IEEE
  • Diversity of edge information using complementary filter banks analysis

    Publication Year: 1998, Page(s):166 - 171
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (580 KB)

    We present the complementary filter (CF) banks, a signal processing technique for image processing. The two-dimensional (2D) multirate signal processing theory and complementary filter properties are the base of CF bank design. Procedures to design nonseparable complementary filters for an alias free decimation are presented. The conditions under which perfect reconstruction is achieved with 2-cha... View full abstract»

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  • Data containers for relation based visualisation

    Publication Year: 1998, Page(s):128 - 130
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (104 KB)

    Illustrates the application of a 3D multiple dataset visualisation tool to a small relational database. The system itself is built around the concept of data containers. These are dynamic regions in 3D space which provide the ability to view multiple datasets using alternate visual paradigms in a dynamic visual querying environment. This system therefore proposes a technique for the exploration of... View full abstract»

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  • Solid modelling with constraints and parameterised features

    Publication Year: 1998, Page(s):102 - 107
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (56 KB)

    This paper presents solutions to the interactive design of 3D objects with parameterised features and constraints. In the introduction, we describe some new industrial needs in computer-assisted design. In the second part, we give an outline of an object-oriented dual modeller we have developed. The third part is devoted to the parametric and constraint-based design approach. The subject of the la... View full abstract»

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  • A recursive approach to parametric surfaces containing non-rectangular patches

    Publication Year: 1998, Page(s):300 - 306
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (92 KB)

    A method is presented which is capable of capturing surfaces of arbitrary topology. Derived from standard bicubic B´ezier patches, it “fills in” n-sided regions with four-sided patches. It is based on a recursive patch-midpoint subdivision algorithm on a rectangular framework of control points, which is then generalised to arbitrary control-point nets. At each step, a new set of ... View full abstract»

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  • An analysis technique and an algorithm for line clipping

    Publication Year: 1998, Page(s):157 - 165
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB)

    A mathematical model for the expected-time analysis of line-clipping algorithms is proposed. Assuming that all clipping windows are equally likely, we demonstrate that the probability of a line segment being totally outside the window approaches the value of 8/9, provided that the line segments tend to be short and evenly distributed within a rectangle. Acceptance-rejection matrices are introduced... View full abstract»

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  • Visualisation of GIS data in VR related to cognitive mapping of environment

    Publication Year: 1998, Page(s):339 - 349
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    The main concepts of a design tool and its testing supported by visualisation of GIS data in a VR system are described. The design tool should improve architectural design with respect to analysis and improving existing and planned urban environments regarding several quality criteria, especially those associated with visual aspects. Preconditions for defining the design tool's purpose are the det... View full abstract»

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  • An iconic gesture is worth more than a thousand words

    Publication Year: 1998, Page(s):222 - 223
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (16 KB)

    In our minds, we can create an imaginary environment of shapes and objects. A natural and intuitive way to externalize these imaginary shapes is through our hands by simply sketching or tracing their outline in space. If we could capture and then interpret our hand shapes, then we would be able to express spatial information in computer-generated graphical environments in a simple and extremely po... View full abstract»

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  • A rational spline with tension: some CAGD perspectives

    Publication Year: 1998, Page(s):178 - 183
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1408 KB)

    It is often necessary to represent a hand-drawn shape accurately. Modeling such shapes manually is both cumbersome and commercially expensive. The user's concern for curves that are easy to manipulate has been a major influence on the development of free-form curves. Rational parametric curves have been receiving considerable attention in the area of geometric modeling because any parametric polyn... View full abstract»

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  • A rationale for the development of a B.Sc. degree program in applied computer graphics based on the 3-dimensional paradigm

    Publication Year: 1998, Page(s):225 - 229
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1228 KB)

    The Department of Technical Graphics at Purdue University offers a unique Bachelor of Science (B.Sc.) degree program designed to prepare students for a professional career in applied computer graphics. Graduating its first class of students in 1993, the B.Sc. program blends the rigor of math and science with the demands of art, design and communication in preparing students for emerging career opp... View full abstract»

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  • Constructing a 3D implicit object modeler by object oriented approach

    Publication Year: 1998, Page(s):239 - 248
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    A real-time 3D object modeler using a small subset of implicit functions for object modeling is described in this paper. It is suitable for 3D soft object modeling. The models can be created interactively while they are being rendered. This overcomes the traditional difficulty of applying implicit functions in real-time object modeling. The modeler is implemented using object-oriented programming ... View full abstract»

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  • An application of computer visualisation for solving a mechanical design by fuzzy set

    Publication Year: 1998, Page(s):69 - 75
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (76 KB)

    A computer visualisation application has been presented for the fuzzy evaluation of windscreen wiper systems which must satisfy several requirements. Some requirements are modelled by fuzzy sets, and a compensating arithmetic mean is utilised for computing the overall performance. A computer animation of the wiper mechanism motion and rainfall is shown, which enables experts, drivers and passenger... View full abstract»

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  • Design of a walkthrough system for indoor environments from floor plans

    Publication Year: 1998, Page(s):50 - 57
    Cited by:  Papers (1)  |  Patents (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (212 KB)

    Shares some experience in designing a practical walkthrough system for indoor environments. We discuss issues from the design of efficient utility programs for building 3D models to the design of a walkthrough engine. Our utility programs allow the creation of the interior of a several-storied building in a few man-days. We also propose several rendering speedup techniques implemented in our walkt... View full abstract»

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  • Solid model abstraction using form features

    Publication Year: 1998, Page(s):120 - 125
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (136 KB)

    Solid model abstraction is an integral part of parallel and process design. It is required for simulation and optimisation of the design and consists of retrieving a simplified model from the solid one, with appropriate dimension reduction and details removal. Unfortunately, current CAD systems do not provide the means for easy simplification of forms. Ongoing research efforts on abstraction yield... View full abstract»

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  • An application model for scientific visualization in hydrologic basins management

    Publication Year: 1998, Page(s):93 - 98
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (104 KB)

    Scientific visualization is a science of great importance nowadays. There are already several visual techniques, but in the field of hydrological basins there are still many questions to be answered. There is no computer application model that uses scientific visualization techniques as a key for information transmission in this scientific area. Another important aspect is that hydrological basins... View full abstract»

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  • Generation of quadrilateral meshes from triangular data with resulting smooth surface reconstruction

    Publication Year: 1998, Page(s):294 - 299
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB)

    A new method for surface reconstruction from an initial triangular mesh is introduced. The method transforms the mesh to a quadrilateral one and then builds a smooth surface on top of it. This approach is efficient for large collections of triangular patches, including difficult situations such as sharp junctions and n-patch vertices. During the reconstruction process, the number of mesh elements ... View full abstract»

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  • WWW access to analogue environments? [Digital urban models]

    Publication Year: 1998, Page(s):274 - 279
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (36 KB)

    Digital urban models have been in use in the UK and elsewhere for over 10 years. This paper addresses some of the practical difficulties which are encountered in seeking to enable World Wide Web (WWW) access to these models. Such difficulties include: copyright of the models themselves; ownership of the data which underpins the models; the accuracy of that data; reliability of the models for purpo... View full abstract»

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  • An approach to visualizing transparency in computer-generated line drawings

    Publication Year: 1998, Page(s):151 - 156
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1528 KB)

    This paper builds on the principles of depicting transparency in hand-made line drawings, and develops a method to generate similar, but computer-generated, line drawings in a two-step process. In the first step, a brightness image is generated, which is used as a basis for the line drawing created in the second step. Three different methods derived from traditional drawing techniques are shown View full abstract»

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  • On modelling the Bezier cubic in algebraic form

    Publication Year: 1998, Page(s):328 - 338
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    Splines based on four-point Bezier cubic arcs show some disadvantages compared to general conic arcs. Efficient rendering and data fitting algorithms require that the cubic be expressed in algebraic form, but there are problems in the conversion from the parametric form because of a singularity associated with a special case, the parabola. In conversion from the general conic to the Bezier cubic f... View full abstract»

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  • Modelling with constraints: a bibliographical survey

    Publication Year: 1998, Page(s):211 - 220
    Cited by:  Papers (2)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (64 KB)

    Nowadays, constraint solvers play a fundamental role in many graphical applications, including geometrical and mechanical CAD systems, layouts, user interfaces and animation. These applications use constraints to conveniently describe the relations between objects. Constraints are automatically maintained and satisfied by a constraint solver. So, numerical and tedious tasks are left to the solver ... View full abstract»

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  • Visualising residential development using desktop virtual reality

    Publication Year: 1998, Page(s):40 - 43
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (956 KB)

    Desktop virtual reality (VR) can be used to explore new housing developments before construction, but for advanced visualisation techniques to become widely used, the concerns of the housing industry must be heard. At Loughborough University, a prototype visualisation of a residential development was produced, and then shown to different types of housing developer to obtain feedback regarding the ... View full abstract»

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  • Analysis and visualization of properties of free-form surfaces

    Publication Year: 1998, Page(s):174 - 177
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    The purposes of this research are to analyze and visualize some properties of aesthetic surfaces and to construct the shapes, which satisfy designers' intentions. To extract and visualize the properties, surface edges of a free-form surface were introduced. The edges are loci of the points that have the extremum values for characteristics of the surfaces such as curvature, height, brightness and s... View full abstract»

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