By Topic

Information Visualization, 1998. Proceedings. 1998 IEEE Conference on

Date 31-31 July 1998

Filter Results

Displaying Results 1 - 25 of 52
  • 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

    Publication Year: 1998, Page(s): 250
    Request permission for commercial reuse | PDF file iconPDF (33 KB)
    Freely Available from IEEE
  • Author index

    Publication Year: 1998, Page(s):351 - 352
    Request permission for commercial reuse | PDF file iconPDF (69 KB)
    Freely Available from IEEE
  • Piecewise interpolation for designing of parametric curves

    Publication Year: 1998, Page(s):307 - 313
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1052 KB)

    A piecewise rational cubic spline curve has been described. The designed curve possesses parameters (weights) in each interval which can be used to control the shape of the curve. A very simple distance-based approximated derivative scheme is presented to calculate the control points. Also, for any interval, it is possible to calculate control points for intermediate point interpolation or conic c... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Experiments in animation control by neural networks

    Publication Year: 1998, Page(s):252 - 260
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2000 KB)

    The use of neural nets with an associated learning paradigm was investigated for the purposes of animation control. Neural control schemes were set up and used to control simple skeletal figures. In most cases, the methods eventually converged to a controller that performed very well, even when the learning algorithm became trapped at local minima. However, there is a limit to the learning rate, o... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Visualisation and reconstruction in dentistry

    Publication Year: 1998, Page(s):25 - 31
    Cited by:  Papers (3)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    Visualisation in the field of dentistry has not, thus far, reached the same development as other medical fields. Potential applications of visualisation techniques in this area, however, are many, ranging from educational displays to training for delicate procedures. This paper reports on the investigation of techniques for handling 3D models of teeth, aiming at the investigation of dental structu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A visual approach to the analysis of curve profile: a case in construction industry

    Publication Year: 1998, Page(s):321 - 326
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (92 KB)

    There are many qualitative and quantitative techniques which have been used for a variety of cases of curve fitting, smoothing and forecasting. All but a few have considered curves from a shape-geometry point of view. The paper argues that curve geometry contains characteristics that are descriptive of the nature of the subject area and therefore provides a viable alternative for the generation of... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Dynamic surface matching for patient positioning in radiotherapy

    Publication Year: 1998, Page(s):16 - 24
    Cited by:  Papers (2)  |  Patents (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB)

    Curative radiotherapy of localised cancer delivers discrete doses of radiation to diseased tissue over many days. Computer driven multileaf collimators now closely conform radiation dose fields to the shape of any tumour. This technology invites the reduction of beam margins in order to maximally spare healthy tissue, reducing side-effects, but placing more emphasis on the precision of dose delive... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Skylight approximation for simulation of plant development

    Publication Year: 1998, Page(s):146 - 150
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB)

    This paper presents an algorithm for approximating the sky brightness of a clear sky with sunshine. The sky light and the light reflected from the ground are approximated by a finite set of parallel light beams. The long-term simulation is considered by averaging the radiance of the lights over a certain time period. The main area of interest of the method is considered to be, but is not restricte... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Visualisation of GIS data in VR related to cognitive mapping of environment

    Publication Year: 1998, Page(s):339 - 349
    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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 4D multimedia datascapes: the SSV program

    Publication Year: 1998, Page(s):280 - 285
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    Part of teaching architecture and building students about building construction involves taking them on to a building site where they can observe, first hand, some of the techniques used to assemble buildings. One problem with this sort of teaching is the availability of accessible building sites. The SSV (Simulated Site Visits) system has been designed to teach students about the process of const... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Visualisation of impact of time on the internal lighting of a building

    Publication Year: 1998, Page(s):286 - 291
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (88 KB)

    The visualisation of an object, such as a building, `in time'-viewing it from different perspectives-has been the subject of many research and development efforts, and significant inroads have been made in this area, which is supported by a sophisticated software technology. On the other hand, visualisation of a building `though time'-viewing it as it ages or gets younger-has received little atten... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Multimedia as a competitive success factor in textile and apparel industry

    Publication Year: 1998, Page(s):86 - 92
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (32 KB)

    This work is based on the assumption that severe difficulties may be found because of the generality of the agents in the textile process chain, during the implementation of “quick-response” strategies. These difficulties run through the inertia that characterizes the establishment of partnership relations between those different agents, as well as the communications between them. Ther... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Curve fitting and design by optimal control methods

    Publication Year: 1998, Page(s):108 - 113
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (200 KB)

    The theory of optimal control is introduced as a new approach for handling curve fitting and design problems. Optimal control provides a uniform formal framework for stating and solving multiple problems in computer-aided geometric design (CAGD). As a result, new classes of curves are defined and known problems are analyzed from a new viewpoint. Often, families of curves which are defined by a min... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Generating a surface including an n-sided patch so as to cover an n-sided hole

    Publication Year: 1998, Page(s):114 - 119
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (124 KB)

    While parametric surfaces are most conveniently described by rectangular patches, most complex objects require the use of patches with other than four sides. Many methods to generate such patches are widely used, but all have drawbacks. The paper describes the creation of a surface which covers the original surface and the non-rectangular “hole” with a new smooth surface. The method em... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Evaluating three-dimensional information visualization designs: a case study of three designs

    Publication Year: 1998, Page(s):137 - 144
    Cited by:  Papers (11)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    A number of 3D information visualization designs have been invented during the last few years. However, comparisons of such designs have been scarce, making it difficult for application developers to select a suitable design. This paper reports on a case study where three existing visualization designs have been implemented and evaluated. We found that the three information visualization designs h... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Improving interactivity within a virtual sculpting environment

    Publication Year: 1998, Page(s):232 - 238
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    Computer animators find that maintaining control of the shape of deformable objects during motion is sometimes difficult. This paper describes a system called “Gargoyle” which provides improved support in this area; it concentrates particularly on the form of interaction between user and computer. In Gargoyle, an object is sculpted at several predefined key positions which are associat... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Level of data-a concept for knowledge discovery in information spaces

    Publication Year: 1998, Page(s):131 - 136
    Cited by:  Papers (3)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (104 KB)

    The visualization of large volumes of abstract information requires mechanisms to support the user by knowledge discovery. Therefore, we have developed the “level of data” concept, in which the abstract nature of the data and the diverse user community has been taken into account. By using the “iceberg” metaphor, we classified the information space into several layers. The ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.